https://wiki.warthunder.com/index.php?title=AN/APS-6&feed=atom&action=historyAN/APS-6 - Revision history2024-03-28T15:50:43ZRevision history for this page on the wikiMediaWiki 1.30.0https://wiki.warthunder.com/index.php?title=AN/APS-6&diff=173668&oldid=prevU38088265: /* General info / usage */ Reformatted2023-09-30T15:30:54Z<p><span dir="auto"><span class="autocomment">General info / usage: </span> Reformatted</span></p>
<a href="https://wiki.warthunder.com/index.php?title=AN/APS-6&diff=173668&oldid=26985">Show changes</a>U38088265https://wiki.warthunder.com/index.php?title=AN/APS-6&diff=26985&oldid=prevU64962917: Edits.2019-06-15T00:36:37Z<p>Edits.</p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- List out vehicles that are equipped with the radar. --></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- List out vehicles that are equipped with the radar. --></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del class="diffchange diffchange-inline">{{Specs</del>-<del class="diffchange diffchange-inline">Link|f6f-5n}}</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins class="diffchange diffchange-inline">[[F6F</ins>-<ins class="diffchange diffchange-inline">5N]]</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del class="diffchange diffchange-inline">{{Specs-Link|f6f</del>-<del class="diffchange diffchange-inline">5n_france}}</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins class="diffchange diffchange-inline">[[F6F</ins>-<ins class="diffchange diffchange-inline">5N (France)]]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
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</table>U64962917https://wiki.warthunder.com/index.php?title=AN/APS-6&diff=26981&oldid=prevU38088265: /* Vehicles equipped with this radar */ Added French F6F-5N2019-06-14T22:55:21Z<p><span dir="auto"><span class="autocomment">Vehicles equipped with this radar: </span> Added French F6F-5N</span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- List out vehicles that are equipped with the radar. --></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- List out vehicles that are equipped with the radar. --></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del class="diffchange diffchange-inline">[[F6F</del>-<del class="diffchange diffchange-inline">5N]]</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins class="diffchange diffchange-inline">{{Specs</ins>-<ins class="diffchange diffchange-inline">Link|f6f-5n}}</ins></div></td></tr>
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</table>U38088265https://wiki.warthunder.com/index.php?title=AN/APS-6&diff=26980&oldid=prevU64962917: Nice job on the article.2019-06-14T22:01:25Z<p>Nice job on the article.</p>
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Revision as of 22:01, 14 June 2019</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the radar and also about its features. Make an air or ground vehicles list on which this radar is installed in our game. --></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the radar and also about its features. Make an air or ground vehicles list on which this radar is installed in our game. --></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The '''AN/APS-6''' is an American [[Airborne Radars|airborne target detection (search) radar]] with tracking capability. It was used on nightfighters and in game is found on the [[F6F-5N]].</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The '''AN/APS-6''' is an American [[Airborne Radars|airborne target detection (search) radar]] with tracking capability. It was used on nightfighters and in <ins class="diffchange diffchange-inline">the </ins>game is found on the [[F6F-5N]].</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>===Vehicles equipped with this radar===</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>===Vehicles equipped with this radar===</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Tell us about the tactical and technical characteristics of the radar. Describe its distinctive features, tactics of usage against the main opponents. --></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Tell us about the tactical and technical characteristics of the radar. Describe its distinctive features, tactics of usage against the main opponents. --></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The AN/APS-6 is primarily a target detection radar however it does have a limited tracking capability. The radar has a theoretical maximum detection range of 60 km, however in reality air targets will nearly always only be detected at much shorter distances (historically at long ranges the radar was mainly used to detect land masses).</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The AN/APS-6 is primarily a target detection radar however it does have a limited tracking capability. The radar has a theoretical maximum detection range of 60 km, however<ins class="diffchange diffchange-inline">, </ins>in reality<ins class="diffchange diffchange-inline">, </ins>air targets will nearly always only be detected at much shorter distances (historically at long ranges the radar was mainly used to detect land masses).</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The radar operates in a "Spiral Scan" search pattern, where the radar dish spins rapidly scanning the area in front of the aircraft following a spiral path (see image to the right). As a result of this the radar appears to spin very rapidly (in real life 20 times a second) on the radar display, however targets are not updated on every pass as the radar is pointing at a different angle on each pass. Likewise depending on whether the radar is pointing towards the outside of the spiral or towards the centre the effect of ground clutter is different, making it appear to "pulse" on the radar display.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The radar operates in a "Spiral Scan" search pattern, where the radar dish spins rapidly scanning the area in front of the aircraft following a spiral path (see image to the right). As a result of this<ins class="diffchange diffchange-inline">, </ins>the radar appears to spin very rapidly (in real life 20 times a second) on the radar display, however<ins class="diffchange diffchange-inline">, </ins>targets are not updated on every pass as the radar is pointing at a different angle on each pass. Likewise depending on whether the radar is pointing towards the outside of the spiral or towards the centre the effect of ground clutter is different, making it appear to "pulse" on the radar display.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The radar can lock on to and track targets within a narrow cone out to a maximum range of 1 km; however in order to do this the radar must cease scanning. This function mimics the gun aiming mode found on the real radar. At short range the radar could be switched to gun aiming mode where a circle was displayed on the radar display and the pilot <del class="diffchange diffchange-inline">maneuvered </del>their aircraft to position the radar return within the circle (this ensured their guns were pointed at the target). The radar would then indicate to the pilot once the range had closed to that of the guns convergence, allowing the pilot to hit the target.  </div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The radar can lock on to and track targets within a narrow cone out to a maximum range of 1 km; however<ins class="diffchange diffchange-inline">, </ins>in order to do this<ins class="diffchange diffchange-inline">, </ins>the radar must cease scanning. This function mimics the gun aiming mode found on the real radar. At short range<ins class="diffchange diffchange-inline">, </ins>the radar could be switched to gun aiming mode where a circle was displayed on the radar display and the pilot <ins class="diffchange diffchange-inline">manoeuvred </ins>their aircraft to position the radar return within the circle (this ensured their guns were pointed at the target). The radar would then indicate to the pilot once the range had closed to that of the guns convergence, allowing the pilot to hit the target.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>    </div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>    </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{| class="wikitable" style="text-align:center"</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{| class="wikitable" style="text-align:center"</div></td></tr>
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<td colspan="2" class="diff-lineno">Line 68:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== History ==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== History ==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Examine the history of the creation and combat usage of this radar. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the radar and adding a block "/ History" (example: https://wiki.warthunder.com/(radar-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article. --></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Examine the history of the creation and combat usage of this radar. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the radar and adding a block "/ History" (example: https://wiki.warthunder.com/(radar-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article. --></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[File:F6F-5N_Gun_Radar.png|300px|thumb|right|The AN/APS-6 radar's display in gun-sight mode (blips for demonstration purposes). In the top image the target would be above and to the right of the radar and too far away to engage. In the bottom image the radar (and the <del class="diffchange diffchange-inline">aircrafts </del>guns) are pointing at the target and it is the correct distance away for the gun's convergence; if the pilot shoots they would hit the target.]]</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:F6F-5N_Gun_Radar.png|300px|thumb|right|The AN/APS-6 radar's display in gun-sight mode (blips for demonstration purposes). In the top image<ins class="diffchange diffchange-inline">, </ins>the target would be above and to the right of the radar and too far away to engage. In the bottom image<ins class="diffchange diffchange-inline">, </ins>the radar (and the <ins class="diffchange diffchange-inline">aircraft's </ins>guns) are pointing at the target and it is the correct distance away for the gun's convergence; if the pilot shoots they would hit the target.]]</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The AN/APS-6 was manufactured by the Westinghouse Electric Corporation, designed for use on carrier-based night fighter aircraft. Work on the radar began in April 1943 with production estimated to start at the beginning of 1944. By September 1043 it was becoming clear that the production target would not be met due to problems arising with Westinghouse's RF head; in order to begin production it was decided to reuse the RF head from the earlier "ASD" radar. The first of these radars<del class="diffchange diffchange-inline">, </del>designated AN/APS-6A, began rolling off the production line in March 1944; with the AN/APS-6 (with the new RF head) entering production in September 1944.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The AN/APS-6 was manufactured by the Westinghouse Electric Corporation, designed for use on carrier-based night fighter aircraft. Work on the radar began in April 1943 with production estimated to start at the beginning of 1944. By September 1043 it was becoming clear that the production target would not be met due to problems arising with Westinghouse's RF head; in order to begin production<ins class="diffchange diffchange-inline">, </ins>it was decided to reuse the RF head from the earlier "ASD" radar. The first of these radars designated AN/APS-6A, began rolling off the production line in March 1944; with the AN/APS-6 (with the new RF head) entering production in September 1944.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The radar weighed 242 lbs (110 kg) and in its normal search mode operated in a spiral scan pattern (see image at the top of the article). In order to scan this way a 400 W, 6,000 rpm spun the radar dish around its longitudinal axis (the axis parallel with the centerline of the aircraft) through a reduction <del class="diffchange diffchange-inline">gear box </del>meaning that the radar dish span at 1,200 rpm (20 revolutions a second). As it span the radar dish was made to "nod" back and <del class="diffchange diffchange-inline">fourth </del>60° in each direction, which combined with the spinning produced the spiral pattern and allows the radar to scan a 120° (60° in each direction) cone in front of the aircraft.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The radar weighed 242 lbs (110 kg) and in its normal search mode operated in a spiral scan pattern (see image at the top of the article). In order to scan this way a 400 W, 6,000 rpm spun the radar dish around its longitudinal axis (the axis parallel with the centerline of the aircraft) through a reduction <ins class="diffchange diffchange-inline">gearbox </ins>meaning that the radar dish span at 1,200 rpm (20 revolutions a second). As it span the radar dish was made to "nod" back and <ins class="diffchange diffchange-inline">forth </ins>60° in each direction, which combined with the spinning produced the spiral pattern and allows the radar to scan a 120° (60° in each direction) cone in front of the aircraft.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The radar's primary display was "[[Airborne_radars#Display_types|B-scope]]" (a rectangular top down display where the distance from the bottom of the display gives the range, and the distance from the centre line the azimuth, of a target), which provided different function at different ranges. At the 65-Mile & 25-Mile range settings the radar could return large surface contacts such as ships as bright dots on the radar display<del class="diffchange diffchange-inline">, </del>and would show land masses as large filled in areas on the display. It was possible to detect air targets on the 25-Mile setting. The 5-Mile & 1-Mile range settings were primarily used for detecting aircraft. At these range settings the B-scope transitioned into <del class="diffchange diffchange-inline">a </del>H-Scope; a type of B-scope where each target is returned as two dots next to each other, where the left hand dot is the position of the target and the right-hand dot's position relative to the left hand dot gives the elevation of the target. In these two settings a horizontal bar could also be displayed across the screen, displaying the altitude of the aircraft (allowing it to function as a form of radar altimeter).</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The radar's primary display was "[[Airborne_radars#Display_types|B-scope]]" (a rectangular top<ins class="diffchange diffchange-inline">-</ins>down display where the distance from the bottom of the display gives the range, and the distance from the centre line the azimuth, of a target), which provided different function at different ranges. At the 65-Mile & 25-Mile range settings<ins class="diffchange diffchange-inline">, </ins>the radar could return large surface contacts such as ships as bright dots on the radar display and would show land masses as large filled in areas on the display. It was possible to detect air targets on the 25-Mile setting. The 5-Mile & 1-Mile range settings were primarily used for detecting aircraft. At these range settings<ins class="diffchange diffchange-inline">, </ins>the B-scope transitioned into <ins class="diffchange diffchange-inline">an </ins>H-Scope; a type of B-scope where each target is returned as two dots next to each other, where the left<ins class="diffchange diffchange-inline">-</ins>hand dot is the position of the target and the right-hand dot's position relative to the left<ins class="diffchange diffchange-inline">-</ins>hand dot gives the elevation of the target. In these two settings<ins class="diffchange diffchange-inline">, </ins>a horizontal bar could also be displayed across the screen, displaying the altitude of the aircraft (allowing it to function as a form of radar altimeter).</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A final mode of the radar was the "Gun-Aim" mode; in this mode the B-scope display was replaced with a G-scope, a type of C-scope. In this mode the radar stopped using spiral scan, switching to a conical scan where the radar dish was locked at a slight angle and continued spinning, as a result the radar scanned a narrow cone in front of the aircraft. A circle and a pair of vertical lines would be displayed on the radar screen and targets would be displayed as dots where their distance from the centre of the circle showed their azimuth and elevation relative to the radar. The radar return had a horizontal line passing through it which grows in length as the target gets closer. The pilot would <del class="diffchange diffchange-inline">maneuver </del>the aircraft to position the target in the centre of the circle, they would then close in on the target until the horizontal line grew to a point where it was touching the two vertical lines. At that point the pilot would fire the guns in order to hit the target. This is the display mode statically <del class="diffchange diffchange-inline">modeled </del>on the radar display in the cockpit of the [[F6F-5N]] in game; in the image to the right radar returns have been added to the display to demonstrate it's operation.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A final mode of the radar was the "Gun-Aim" mode; in this mode<ins class="diffchange diffchange-inline">, </ins>the B-scope display was replaced with a G-scope, a type of C-scope. In this mode the radar stopped using spiral scan, switching to a conical scan where the radar dish was locked at a slight angle and continued spinning, as a result<ins class="diffchange diffchange-inline">, </ins>the radar scanned a narrow cone in front of the aircraft. A circle and a pair of vertical lines would be displayed on the radar screen and targets would be displayed as dots where their distance from the centre of the circle showed their azimuth and elevation relative to the radar. The radar return had a horizontal line passing through it which grows in length as the target gets closer. The pilot would <ins class="diffchange diffchange-inline">manoeuvre </ins>the aircraft to position the target in the centre of the circle, they would then close in on the target until the horizontal line grew to a point where it was touching the two vertical lines. At that point<ins class="diffchange diffchange-inline">, </ins>the pilot would fire the guns in order to hit the target. This is the display mode statically <ins class="diffchange diffchange-inline">modelled </ins>on the radar display in the cockpit of the [[F6F-5N]] in<ins class="diffchange diffchange-inline">-</ins>game; in the image to the right radar returns have been added to the display to demonstrate it's operation.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== Media ==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== Media ==</div></td></tr>
<!-- diff cache key test_wiki_wt_com:diff:version:1.11a:oldid:26976:newid:26980 -->
</table>U64962917https://wiki.warthunder.com/index.php?title=AN/APS-6&diff=26976&oldid=prevU13682523: Article for the AN/APS-6 radar used on the F6F-5N. Complete with history of radar and explanation of spiral scan (why it appears to scan ludicrously fast).2019-06-14T21:43:23Z<p>Article for the AN/APS-6 radar used on the F6F-5N. Complete with history of radar and explanation of spiral scan (why it appears to scan ludicrously fast).</p>
<p><b>New page</b></p><div>__TOC__<br />
<br />
==Description==<br />
<!-- Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the radar and also about its features. Make an air or ground vehicles list on which this radar is installed in our game. --><br />
<br />
The '''AN/APS-6''' is an American [[Airborne Radars|airborne target detection (search) radar]] with tracking capability. It was used on nightfighters and in game is found on the [[F6F-5N]].<br />
<br />
===Vehicles equipped with this radar===<br />
<!-- List out vehicles that are equipped with the radar. --><br />
* [[F6F-5N]]<br />
<br />
==General info / usage==<br />
[[File:F6F-5N_Spiral_Scan.png|300px|thumb|right|A visual representation of the general path the radar beam follows during a spiral scan pattern.]]<br />
<!-- Tell us about the tactical and technical characteristics of the radar. Describe its distinctive features, tactics of usage against the main opponents. --><br />
<br />
The AN/APS-6 is primarily a target detection radar however it does have a limited tracking capability. The radar has a theoretical maximum detection range of 60 km, however in reality air targets will nearly always only be detected at much shorter distances (historically at long ranges the radar was mainly used to detect land masses).<br />
<br />
The radar operates in a "Spiral Scan" search pattern, where the radar dish spins rapidly scanning the area in front of the aircraft following a spiral path (see image to the right). As a result of this the radar appears to spin very rapidly (in real life 20 times a second) on the radar display, however targets are not updated on every pass as the radar is pointing at a different angle on each pass. Likewise depending on whether the radar is pointing towards the outside of the spiral or towards the centre the effect of ground clutter is different, making it appear to "pulse" on the radar display.<br />
<br />
The radar can lock on to and track targets within a narrow cone out to a maximum range of 1 km; however in order to do this the radar must cease scanning. This function mimics the gun aiming mode found on the real radar. At short range the radar could be switched to gun aiming mode where a circle was displayed on the radar display and the pilot maneuvered their aircraft to position the radar return within the circle (this ensured their guns were pointed at the target). The radar would then indicate to the pilot once the range had closed to that of the guns convergence, allowing the pilot to hit the target. <br />
<br />
{| class="wikitable" style="text-align:center"<br />
! colspan="4" | Search Characteristics<br />
|-<br />
! {{Annotation|Maximum<br/>Detection<br/>Range|The maximum possible range at which a target can be detected}}<br />
! {{Annotation|Guaranteed<br/>Detection<br/>Range|The range, below which, detection of a target is practically guaranteed}}<br />
! {{Annotation|Minimum<br/>Detection<br/>Range|The range below which targets cannot be detected by the radar}}<br />
! {{Annotation|Range Settings|The available range scale settings of the radar}}<br />
|-<br />
| 60,000 m || 7,200 m || 150 m || 1 km, 9 km, 46 km,<br/>120 km<br />
|-<br />
! colspan="4" | Search Modes<br />
|-<br />
! {{Annotation|Search Mode|The search mode of the radar (some radars have multiple search modes with different characteristics)}}<br />
! {{Annotation|Azimuth Scan<br/>Angle|How far to each side the radar can scan}}<br />
! {{Annotation|Elevation Scan<br/>Angle|How far up and down the radar can scan}}<br />
! {{Annotation|Scan Time|The time taken to complete one scan (the scan bar moving from one edge of the radar display to the other)}}<br />
|-<br />
| Default || ±60° || ±60° || 1.2 s (Spiral Scan)<br />
|-<br />
! colspan="4" | Tracking Characteristics<br />
|-<br />
! {{Annotation|Maximum<br/>Tracking<br/>Range|The maximum range at which a target can be tracked}}<br />
! {{Annotation|Minimum<br/>Tracking<br/>Range|The range below which targets cannot be tracked by the radar}}<br />
! {{Annotation|Azimuth Tracking<br/>Angle|How far to each side the radar can track a target}}<br />
! {{Annotation|Elevation Tracking<br/>Angle|How far up and down the radar can track a target}}<br />
|-<br />
| 1,000 m || 100 m || ±15° || ±15°<br />
|-<br />
|}<br />
<br />
===Comparison with analogues===<br />
<!-- Give a comparative description of similar or related radars. --><br />
Compared to other wartime radars the AN/APS-6 has good scanning angles and an OK range. Compared to the [[AN/APG-26]] the tracking angles of the AN/APS-6 are poor, although better than those on the [[RP-5]]. The tracking range is far inferior to both the [[AN/APG-26]] and [[RP-5]].<br />
<br />
===Pros and cons===<br />
<!-- Summarize and briefly evaluate the radar in terms of its characteristics and combat effectiveness. Mark pros and cons as a list. --><br />
<br />
'''Pros:'''<br />
* Decent range<br />
* Can track targets<br />
* OK horizontal scanning angles and very good vertical scanning angles<br />
<br />
'''Cons:'''<br />
* Inferior range and scanning angles to some high tier radars<br />
* Tracking capability is limited<br />
<br />
== History ==<br />
<!-- Examine the history of the creation and combat usage of this radar. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the radar and adding a block "/ History" (example: https://wiki.warthunder.com/(radar-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article. --><br />
[[File:F6F-5N_Gun_Radar.png|300px|thumb|right|The AN/APS-6 radar's display in gun-sight mode (blips for demonstration purposes). In the top image the target would be above and to the right of the radar and too far away to engage. In the bottom image the radar (and the aircrafts guns) are pointing at the target and it is the correct distance away for the gun's convergence; if the pilot shoots they would hit the target.]]<br />
The AN/APS-6 was manufactured by the Westinghouse Electric Corporation, designed for use on carrier-based night fighter aircraft. Work on the radar began in April 1943 with production estimated to start at the beginning of 1944. By September 1043 it was becoming clear that the production target would not be met due to problems arising with Westinghouse's RF head; in order to begin production it was decided to reuse the RF head from the earlier "ASD" radar. The first of these radars, designated AN/APS-6A, began rolling off the production line in March 1944; with the AN/APS-6 (with the new RF head) entering production in September 1944.<br />
<br />
The radar weighed 242 lbs (110 kg) and in its normal search mode operated in a spiral scan pattern (see image at the top of the article). In order to scan this way a 400 W, 6,000 rpm spun the radar dish around its longitudinal axis (the axis parallel with the centerline of the aircraft) through a reduction gear box meaning that the radar dish span at 1,200 rpm (20 revolutions a second). As it span the radar dish was made to "nod" back and fourth 60° in each direction, which combined with the spinning produced the spiral pattern and allows the radar to scan a 120° (60° in each direction) cone in front of the aircraft.<br />
<br />
The radar's primary display was "[[Airborne_radars#Display_types|B-scope]]" (a rectangular top down display where the distance from the bottom of the display gives the range, and the distance from the centre line the azimuth, of a target), which provided different function at different ranges. At the 65-Mile & 25-Mile range settings the radar could return large surface contacts such as ships as bright dots on the radar display, and would show land masses as large filled in areas on the display. It was possible to detect air targets on the 25-Mile setting. The 5-Mile & 1-Mile range settings were primarily used for detecting aircraft. At these range settings the B-scope transitioned into a H-Scope; a type of B-scope where each target is returned as two dots next to each other, where the left hand dot is the position of the target and the right-hand dot's position relative to the left hand dot gives the elevation of the target. In these two settings a horizontal bar could also be displayed across the screen, displaying the altitude of the aircraft (allowing it to function as a form of radar altimeter).<br />
<br />
A final mode of the radar was the "Gun-Aim" mode; in this mode the B-scope display was replaced with a G-scope, a type of C-scope. In this mode the radar stopped using spiral scan, switching to a conical scan where the radar dish was locked at a slight angle and continued spinning, as a result the radar scanned a narrow cone in front of the aircraft. A circle and a pair of vertical lines would be displayed on the radar screen and targets would be displayed as dots where their distance from the centre of the circle showed their azimuth and elevation relative to the radar. The radar return had a horizontal line passing through it which grows in length as the target gets closer. The pilot would maneuver the aircraft to position the target in the centre of the circle, they would then close in on the target until the horizontal line grew to a point where it was touching the two vertical lines. At that point the pilot would fire the guns in order to hit the target. This is the display mode statically modeled on the radar display in the cockpit of the [[F6F-5N]] in game; in the image to the right radar returns have been added to the display to demonstrate it's operation.<br />
<br />
== Media ==<br />
''An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.''<br />
<br />
== See also ==<br />
<!-- Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:<br />
reference to the article about the variant of the cannon/machine gun;<br />
references to approximate analogues by other nations and research trees. --><br />
<br />
* [[Airborne Radars]]<br />
* [[F6F-5N]]<br />
* [[RP-5]] (another radar with combined search and track functions)<br />
<br />
== External links ==<br />
<!--''Paste links to sources and external resources, such as:''<br />
* ''topic on the official game forum;''<br />
* ''encyclopedia page on weapon;''<br />
* ''other literature.''--><br />
<br />
* [https://www.febo.com/pages/docs/RadLab/VOL_26_Radar_Scanners_and_Radomes.pdf Massachusetts Institute Of Technology Radiation Laboratory Series - Radar Scanners And Radomes]<br />
* [https://pwencycl.kgbudge.com/A/p/APS-6_airborne_radar.htm The Pacific War Online Encyclopedia - APS-6 Airborne Radar]<br />
* [http://www.ibiblio.org/hyperwar/USN/ref/NightFighterRadars/USNFRadar2.html Westinghouse in WW2 - The AN/APS-6 Aircraft Radar]<br />
* [https://www.ibiblio.org/hyperwar/USN/ref/NightFighterRadars/APS-6PilotsManual.pdf AN/APS-6 Radar Pilot's Operating Manual]<br />
<br />
[[Category:Aircraft radars]]</div>U13682523