YP-38

This page is about the American twin-engine fighter YP-38. For other versions, see P-38 (Family).

YP-38

YP-38

USA

II Rank

Battle rating:

AB	RB	SB
2.3	3.0	3.0

Class:

PREMIUM

Fighter

Interceptor

Purchase:Bundle or Gift

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Description

The YP-38 is a premium gift rank II American twin-engine fighter with a battle rating of 2.3 (AB) and 3.0 (RB/SB). It was introduced in Update "Raining Fire" when it replaced the XP-38G in the Gaijin store.

General info

Flight performance

Max speed

at 7 012 m635 km/h

Turn time23 s

Max altitude12 192 m

EngineAllison V-1710-29

TypeInline

Cooling systemWater

Take-off weight8 t

Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.

Characteristics	Max Speed (km/h at 7,012 m)		Max altitude (metres)	Turn time (seconds)		Rate of climb (metres/second)		Take-off run (metres)
	AB	RB		AB	RB	AB	RB
Stock	613	596	12192	24.0	24.9	10.7	10.7	380
Upgraded	659	635		22.0	23.0	16.7	13.5

Details

Features
Combat flaps	Take-off flaps	Landing flaps	Air brakes	Arrestor gear
✓	✓	✓	X	X

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
790	289	620	403	250	~10	~6

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 380	< 460	< 500	> 420

Survivability and armour

Crew1 person

Speed of destruction

Structural790 km/h

Gear289 km/h

The pilot has moderate armour protection, but other modules are vulnerable; the critical modules have no armour protection, as the armour is focused solely on the pilot. Because the two engines are on either side of the pilot they could absorb several bullets for the pilot if the enemy comes from the side.

• 38 mm Bulletproof Glass - Windshield
• 9.5 mm Steel - Behind Pilot's Head
• 6.5 mm Steel - Pilot's Seat
• 6.5 mm Steel - In Front of Pilot
• Self-Sealing Fuel Tanks

Modifications and economy

Repair cost

AB1 502

RB6 181

SB1 415

Crew training6 900

Experts46 000

Aces320

Research Aces500 000

Reward for battleAB / RB / SB

2 × 70 / 230 / 240 %

2 × 130 / 130 / 130 %

Modifications

Flight performance	Survivability	Weaponry
Fuselage repair Radiator Compressor Wings repair Engine Engine injection	Airframe Cover	bmg30_belt_pack m4_belt_pack bmg30_new_gun bmg50_belt_pack m4_new_gun bmg50_new_gun

Armaments

Offensive armament

Weapon 137 mm M4 cannon

Ammunition15 rounds

Fire rate150 shots/min

Weapon 22 x 12.7 mm M2 Browning machine gun

Ammunition400 rounds

Fire rate750 shots/min

Weapon 32 x 7.62 mm Browning machine gun

Ammunition1 000 rounds

Fire rate1 000 shots/min

The YP-38 is armed with:

• 1 x 37 mm M4 cannon, nose-mounted (15 rpg)
• 2 x 12.7 mm M2 Browning machine guns, nose-mounted (200 rpg = 400 total)
• 2 x 7.62 mm Browning machine guns, nose-mounted (500 rpg = 1,000 total)

Usage in battles

Describe the tactics of playing in the aircraft, the features of using aircraft in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Manual Engine Control

MEC elements
Mixer	Pitch	Radiator			Supercharger	Turbocharger
		Oil	Water	Type
Controllable	Controllable Auto control available	Controllable Not auto controlled	Controllable Not auto controlled	Separate	Not controllable 1 gear	Not controllable

Pros and cons

Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".

Pros:

Cons:

History

After the loss of the XP-38 in 1939, the program still showed great potential and, on April 27, 1939 a Limited Procurement Order was placed for thirteen test aircraft. Given serials 39-689-701, the aircraft were designated model 122-62-02 and had many similarities to the final P-38G. Redesigned with Allison V-1710-27/29 (F2R and F2L) boasting 1,150HP and also equipped with B-2 Turbo-Superchargers they featured Spur Reduction Gearing as opposed to the former Epicylical Gearing found on the XP-38. This caused the engines thrust line to be raised upwards, as well the propellers were ,Outward-Rotating rather than Inward-Rotating. (The port propeller rotated Counter-Clockwise when seen from the rear, and the starboard Clockwise). This gave much stability when firing the guns and allowed the aircraft to be a much more effective combat aircraft.

The aircraft's chin-mounted intake under the propeller spinner was also replaced by a pair of cooling intakes, as well as enlarged radiators on both sides of the tail booms. The armament was also revised, substituting two 0.30in. machine guns with two of the four 0.50in. machine guns, and the 37mm Browning M9 was exchanged for a 20mm cannon. With all of the guns mounted in the nose, with the 0.50in. guns mounted above the 0.30in., some YP-38s were observed to have permanent gun enclosure tubes protecting the two 0.50in guns, with flush plates to cover the remaining gun ports. In reality, most of the YP-38s flew unarmed, and due to the structural redesigning, the aircraft was lighter than the XP-38 at 14,348lbs.

On September 16, 1940 the first YP-38 took off with Marshall Headle at the controls, and in March 1940 the Army received it's first YP-38 for trials. With production severely lagging behind, all YP-38 aircraft weren't completed until June of 1941. The aircraft had a maximum speed of 405 Miles per Hour, at 10,000ft, and an altitude of 20,000ft could be achieved in just six minuted from takeoff. With this, the aircraft was exceptional, but had a flaw not seen until it was too late.

The aircraft encountered problems in which, during trials, tail buffet was severe in High Speed Dives. This all came to a head on November 4th, 1941, when Lockheed test pilot Ralph B. Virden took off with the intent to put aircraft 39-689 into High Speed Dive tests. During a dive, the aircraft lost it's tail booms and impacted into the kitchen of a house in Glendale, California, killing Ralph and destroying the aircraft. The accident was initially falsely diagnosed as Elevator Flutter but was soon later solved by the addition of large Wing-Root Fillets at the points where the wings joined the fuselage. The new repair had to be done very specific and precise, as failure of a tight fit would severely impact flight characteristics.

Ralph B. Virden

Born 11, June 1898 in Audobon Township, IL, he was the second child of Hiram R. Virden, a farmer, and Nancy Carrie Ivy Virden. He attended Bradley Polytechnic Institute in Peoria, IL and, on 15, October 1918 at the age of 17, enlisted in the US. Army. With the end of WWI less than a month later, he was quickly discharged, and in 1919 he married Florence L McCullers. Having two children, Kathryn and Ralph Jr., Kathryn unfortunately having passed at the age of 10 in 1930.

In the mid-1920s, Virden flew as a contract mail pilot, holding pilot No. 628, and was employed by Gilmore Aviation and Pacific Air Transport, and for 13 years flew also as a pilot for United Air Lines. In 1939, having racked up over 15,000 flight hours, he was employed by the Lockheed Corporation as a test pilot. Now living in North Hollywood with his son, Ralph Jr., who was also employed at Lockheed, he would unfortunately lose his life in an accident on 4, November 1939 when the tail booms of his Lockheed YP-38 test aircraft, 39-689, separated from the aircraft during a high speed dive test over Glendale, California. Ralph Jr, after the death of his father, would go on to join the United States Navy in WWII.

Crash of 39-689

On November, 4 1941, during a flight over Glendale, California, Lockheed Test Pilot Ralph B. Virden pushed the nose of aircraft 39-689 down to conduct a High Speed Dive test. While in the dive, the aircraft approached what today is known as Critical Mach Number, resulting is air-flow over the wings to reach Transonic speeds and forming shockwaves that interrupted lift causing a portion of the wing to stall. During the dive, the speed reached too great and, in turn, caused the tail booms to separate. Thereafter, the aircraft impacted the house of Glendale resident Jack Jensen at 1147 Elm Street, killing Ralph and igniting a fire. The tail was eventually located several blocks away.

Following the accident, Lockheed, the U.S. Air Corps, and the National Advisory Committee on Aeronautics (NACA) undertook an extensive testing program for the P-38.

Media

Skins

• Skins and camouflages for the YP-38 from live.warthunder.com.

Videos

War Thunder - YP-38 "The 37mm Lighting!" - Bo Time Gaming

YP-38 Lightning Review - Jaguara333

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the series of the aircraft;
• links to approximate analogues of other nations and research trees.

External links

• [Lockheed Martin] The P-38: When Lightning Strikes (Web Archive)

References

• A Brief History of the P-38 "Lightning" (Web Archive)
• This Day in Aviation - Lockheed YP-38 Lightning Archives (Web Archive)