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Article of the month: February
The Bf 109 E-1 is essentially the first 'modern' 109. Similar in many respects to its logical evolution in game, the Bf 109 E-3, differing mainly in armament.
The main features of this aircraft are its good acceleration and climb rate over many of its counterparts in game. The E-1 boasts a great power-to-weight ratio and is a very maneuverable fighter. Whilst many of its opponents can out-turn the “Emil” in combat situations, it still has a very respectable range of maneuvers it can achieve. For Armament, the Bf 109 E-1 has four 7.92mm MG 17 machine guns with a total ammunition capacity of 3000 rounds. Two mounted within the wings and a further two mounted within the engine cowling. Alternatively, the E-1 can be equipped for the Fighter-Bomber role and mount four 50kg bombs with the ETC 50/VIIId modification or a single 250 kg bomb with the ETC 500/IXb modification. Whilst it may not be one of the hardest hitting aircraft for its tier, its ammunition supply makes the Bf 109 E-1 a very forgiving aircraft for Rookie pilots. Its excellent performance makes it an effective energy fighting “Boom and Zoom” aircraft that is still capable of pulling efficient aerial maneuvers in combat.
The Bf 109 E-1 will most likely not be an immediate success for new players. While sporting a very respectable climb rate and good acceleration over its historic counterparts, the Bf 109 E-1 is not an easy plane to fly. That said, its light-weight in relation to its engine performance allows the player to wield a pure-breed energy-fighter. Yet, it is lacking in two regards that often make it hard for new players to do well from the off-start. First off, while the Emil does have a good turn, its main historic enemies either turn as good or better. Second, it's armament (four light machine guns) is insufficient to reliably dispatch enemies in a quick burst.
The Bf 109 E-1 is a solid example of how the Bf 109 family perform and demonstrates many of the key features they boast in terms of flight performance. Whilst its armament is somewhat lacking, the Bf 109 E-1 is a great fighter in its own right and leads on to the improved Bf 109 E-3 featuring more powerful 20mm MG FF cannons.
Featured historic article
The velocity characteristic of a turbojet engine is the dependence of engine power on the true M (Mach - speed of sound) airspeed value at a constant H (height) according to the engine speed control law. It was only possible to regulate early turbojet engines that had a fixed flow channel shape by changing the level of fuel consumption. This is why, under these conditions, the speed control law is implemented through maintaining a stable number of engine revolutions and a constant temperature of the gases that leave the combustion chamber.
The typical speed characteristics for a turbojet engine can be seen on fig.1 (Jumo 004B). The graphs show that when the flight speed increases, the thrust first decreases, then increases and then at М (Mach) 2...4 falls to zero again. This type of change in thrust depends on changes to some of the main parameters of the turbojet engine: the extent of increases in pressure, air consumption, unit thrust, etc.
The unit thrust of a turbojet engine constantly falls as flight speed increases, because it is determined by the difference in the speed of exhaust gas flow and the flight speed (when the flight speed and the speed of exhaust gas are equal, the engine obviously does not produce thrust).
The amount of pressure increase and the great flow of air related to it (Ga, fig.3) increase as speed increases (the higher the speed the more air flows through the engine as a result of dynamic pressure). At low flight speeds, the growth in pressure and air flow is insignificant but becomes a lot higher as speed increases (the relation is close to being quadratic).
As a result at low speeds, the thrust is reduced... Continue reading
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