Lockheed P-38H-5-LO Lightning - The Last Lightning With Sweptback Engines

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This suggestion was revised and reposted from my original suggestion in old forums.

Lockheed P-38H-5-LO Lightning

   Hello everybody. I’d like to re-introduce and suggest the Lockheed P-38H Lightning for War Thunder. The P-38H was an interim variant with an airframe of the late-block P-38G and more powerful engines of the P-38J. The P-38H-5 was introduced in mid-1943 as the final production batch of Lightnings with the original ‘sweptback’ engine cowling configuration.


Key Characteristics

  • Heavy fighter and interceptor
  • Turbo-supercharged Allison V-1710-89/-91 (1,425 hp each) powerplants
  • New 20-mm M2(c) cannon
  • New automatic cooling system
  • More underwing racks capable of carrying 3,200 lb of suspended armament

History

The P-38H Lightning was an improved variant of the P-38G, featuring a new 20-mm M2(c) cannon instead of the old M1 cannon and more underwing racks to carry a 3,200 lb payload. It was powered by 1425-hp Allison V-1710-89/91 engines with new coolant shutters, turbo superchargers, and automatic oil radiator flaps as the solution to the overheating problems.

The P-38H was the standard version of the Lightning during the second half of 1943. It was a stopgap for the P-38G, while the near-definitive P-38J would eventually appear later and replace the early Lightning models. 601 P-38Hs were built with two production blocks: 226 H-1s and 375 H-5s.

Both P-38H-1-LOs and P-38H-5-LOs had different versions of their turbo-superchargers. The P-38H-5-LO was fitted with newer B-33 turbo-superchargers instead of the older B-13, improving high-altitude performance.

The first of 226 P-38H-1-LOs went into service in May of 1943, and these P-38Hs debuted their first operational service in England in September 1943 to escort the B-17 Flying Fortresses of the 8th Air Force. These P-38Hs belonged to the 55th Fighter Group and regularly performed escort missions with the B-17 raids over Europe. Sometimes, they flew on intruder missions where they could cruise much further into Germany enough to reach Berlin to intercept anything within their sight.

The P-38Hs of the 8th Air Force were discovered to have reliability issues with their turbo-superchargers in high-altitude and cold-weather operations. The engines of the P-38H were subjected to detonation if they were operated at high power for extended periods, and the intercooler system integral to the wing leading edges restricted the P-38H from reaching their potential performance. These issues were seen in P-38Gs. Therefore, the decision was made to restrict P-38Hs to operate at continuous 1,240 horsepower, a total loss of 370 hp, 160 hp less than the P-38G. Instantly, the P-38Hs were more unpopular with the pilots and senior officers. Nevertheless, the P-38H was reportedly two mph faster than the P-38G.

Consequently, the restricted performance of P-38H did not allow the maneuvering flap to be used at high altitudes for dog-fighting battles. Those problems were solved when the intercoolers were
moved from the leading edges of the wings to scoops under the engine nacelles on the subsequent P-38J that would replace P-38Gs and P-38Hs in the 8th Air Force by August 1943.


Specifications

Lockheed P-38H-5-LO Lightning

General Characteristics

  • Crew: 1 (Pilot)
  • Length: 37 ft 10 in (11.5 m)
  • Height: 9 ft 9.75 in (2.99 m)
  • Span: 52 ft (15.85 m)
  • Wing area: 327.5 sq ft (30.42 sq m)
  • Propellers: 2 x 3-bladed constant-speed propellers
  • Powerplants: 2 x turbo-supercharged piston engines, Allison V-1710-89(Right)/-91(Left)
    → 2,850 hp @ (2,096 kW)
  • Internal Fuel: 300 US gal. (1,135 L)
  • Oil Tankage: 26 US gal. (98.4 L)
  • Empty Weight: 12,380 lb (5,615 kg)
  • Gross Weight: 16,300 lb (7,394 kg)

Engine Ratings

  • Take-Off (Sea Level):

    • 1,425 hp @ 3,000 rpm @ 54.0” hg
  • War Emergency (S.L. - 15,000 ft):

    • 1,600 hp @ 3,000 rpm @ 60.0” hg
  • Maximum Continuous (S.L. - 28,000 ft):

    • 1,000 hp @ 2,600 rpm @ 44.0” hg

Performance

  • Power-to-Weight Ratio: 0.175 hp/lb (0.28 kW/kg)
  • Critical Altitude Speed: 402 mph @ 25,000 ft (647 km/h @ 7,620 m)
  • Wing Loading: 49.8 lb/sq ft (243.1 kg/sq m)
  • Time to Altitude: 6.5 minutes to 20,000 ft (6,096 m)
  • Service Ceiling: 40,000 ft (12,192 m)
  • Max. Range: 2,400 miles (3,862 km)

Armament

  • Guns:

    • 1 x 20-mm M2(C) cannon (150 Rounds)
    • 4 x .50-cal. M2 Browning machine guns (2,000 Rounds)
  • Bombs:

    • 2 x 1000-lb bombs
    • 2 x 500-lb bombs
    • 4 x 250-lb bombs
  • Rockets:

    • 6 x M8 rockets
  • Drop Tanks:

    • 2 x 150-gal drop tanks

Supplemental Data


Diagrams


Images


Conclusion | Why it should be in the game

   I made this suggestion to request more World War II-era vehicles for War Thunder. This P-38H would make a welcoming addition to the P-38 Lightning family in War Thunder. The P-38H could be a great addition to a folder with P-38G in the tech tree for anyone, and the P-38H would enjoy upgrades over the P-38G with an improved 20mm cannon, slightly better performance, and more bombs.


See Also


Sources


Thank you for taking the time to read my suggestion! 😃

4 Likes

Looks awesome!!! Would love this!! With that kind of bomb load I know where lighting will strike ;)

1 Like

Have a +1 from me, I’d definitely love to see more P-38s pop up

1 Like

Updated P-38H-5 History and Specifications with Engine Ratings; added Supplemental Data and Diagrams sections.

+1 from me pls!