TYPE: Target-defence interceptor. Project

ACCOMMODATION: Pilot only

POWER PLANT: One Heinkel-Hirth HeS 011A turbojet, rated at 1,300 kp

PERFORMANCE: 565 mph at 19,685 ft (estimated)

COMMENT: The Heinkel he 162D was a parallel development  to the Heinkel He 162C what was essentially similar but featured a swept-forward wing. There appeared to be certain advantages to be gained by sweeping the wing surfaces forward towards the tips, the critical Mach number being similar to that for an equal angle of sweepback but the tip stall tendency being removed and thus permitting higher taper ratios in both planform and thickness.
Swept-forward wings were also tested or designed in Germany by Junkers with Ju 287, EF 122, 125, EF 131, by Blohm & Voss with Bv P.209.02, and in the United States with Cornelius XFG-1 fuel-transport glider.
Neither the Heinkel He 162C nor the He 162D took-off into the air. But when the Heinkel factory at Schwechat, Austria, was occupied by Allied troops, a half-completed prototype for the Heinkel-Hirth HeS 0114A-powered B- model was found, this having interchangeable swept-back (He 162C) and swept-forward wings (He 162D). (Ref.: 7)

TYPE: Target-defence interceptor. Project

ACCOMMODATION:  Pilot only

POWER PLANT: One Heinkel-Hirth HeS-0114A turbojet, rated at 1,300 kp

PERFORMANCE: 565 mph at 19,658 ft (estimated)

COMMENT: Progressive development of the basic Heinkel He 162 design led to the He 162C. This project utilized the B-series fuselage and the more powerful Heinkel-Hirth HeS 011A turbojet, had wings swept back 38 degrees at the leading edge, and a V-type or “butterfly” tail. This latter was tested by the He 280 V8. The new wing featured a coarse anhedral angle from two-thirds span.
The He 162C was envisaged as a target-defence interceptor and it was proposed to equip the fighter  with a variation of “Schräge Musik” (Jazz music, Luftwaffe term for fixed weapons firing obliquely upward) with a pair of 30-mm MK 103 cannon on special mountings enabling them to be tilted upwards at a fine angle from the horizontal. This enabled the guns to be fired while the fighter underflew the target.
The He 162C project was not realized, but when the Heinkel factory at Schwechat, Austria, was occupied by Allied troops, a half-completed prototype for the Heinkel-Hirth HeS 0114A-powered model was found, this having interchangeable swept-back (He 162C) and swept-forward wings (He 162D). (Ref.: 7)

TYPE: Interceptor Fighter. Project

ACCOMMODATION: Pilot only

POWER PLANT: Two Argus As 014 pulse jets, rated at 333 kp thrust each

PERFORMANCE: 484 mph at 9,850 ft (estimated)

COMMENT: From the outset of the He 162 programme, the Heinkel team had envisaged the eventual use of the Heinkel-Hirth 011A (HeS 11A) turbojet in the He 162 aircraft as the He 162B-1. Possessing a similar structure to that of the A-series fighter, the He 162B had a lengthened fuselage which permitted an increase of internal fuel capacity. Due to the slow production rate of that engine, in early 1945 the Nazi Party Leader Saur’s Fighter Air Staff requested proposals for the adaptation of the He 162 to take the Argus-Röhre, a simple pulse jets or intermittent propulsive ducts. Heinkel as well as the RLM’s Technische Amt found that the Argus-Röhren were totally unsuited for fighter installation. But nevertheless, project studies were started by adapting a He 162B-series airframe to take either one or two Argus-Rohr units. The first arrangement called for the two Argus-Röhren As 014 with 333 kp thust each to be mounted side-by-side over the rear fuselage. Apart from excessive vibration the aircraft needed two Schmidding 109-533 solid-fuel take-off rockets with 1,000kp thrust for 12 sec. each. The high fuel consumption of the pulse jet militated against its used as a “Volksjäger power plant. As Heinkel had little enthusiasm for the Argus-Rohr-powered He 162, this programme advanced no further than the drawing board. (Ref.: 7)

TYPE: Interceptor, fighter. Project

ACCOMMODATION: Pilot only

POWER PLANT: One Heinkel He S 011 turbo-jet engine, rated at 1,300 kp, plus one Walter HWK 509A-2 liquid rocket engine, rated at 1,700kp

PERFORMANCE: 920 mph at 18,800 ft,  with rocket, 572 mph at 6.160 ft, jet engine only

COMMENT: In mid 1943, the Arado Aircraft Company draw up some studies into the future development of high speed fighters. Among the designs was an interceptor aircraft with a combination of both turbo-jet as well as rocket engine. This project, the Arado Ar TEW 16/43-15, had a single Heinkel He S 011 turbo-jet engine developing 1,300 kp of thrust, mounted atop the fuselage immediately behind the cockpit. To improve the climb rate and performance, a Walter HWK 509A bi-fuel rocket engine was also placed within the rear fuselage. The wings were swept back at 25 degrees, and because of the jet engine’s placement, a twin fin and rudder arrangement was provided. In order to achieve as much space as possible for fuel tanks a special landing gear arrangement was proposed. This was designed by the DVL (Deutsche Versuchsanstalt für Luftfahrt, German Aviation Experimental Establishment). The main wheels were provided with small spherical tires of 12.5 inch in diameter, and were placed in tandem, thus the space needed when retracted was minimal. The nose and main wheels retracted forwards. The cockpit was located in the nose of the fuselage and guaranteed good front view, but vision to the rear was very poor due to the engine and air intake position. Due to these expected problems – same as with another Arado project, the Arado E. 580,  further work on this design was cancelled. (Ref.: 16; 18) 

TYPE: Interceptor, fighter. Project

ACCOMMODATION: Pilot only

POWER PLANT: One BMW 003A-1 turbo-jet engine, rated at 800 kp

PERFORMANCE: 550 mph (estimated)

COMMENT: In September 1944 the Junkers Flugzeugwerke (Junkers aircraft company) submitted a design EF 123 for the Volksjäger competition (People’s Fighter Project). Little is known about the design, only a photo of a model survived. The wings were similar to the Heinkel He 162 “Spatz”. Because the jet engine was placed below the fuselage a “normal” tailplane was provided. The RLM rejected the Junkers EF 123 in favour to the Heinkel He 162 and further work on the design was cancelled. (Ref.: 19; 21)

TYPE: Interceptor, fighter

ACCOMMODATION: Pilot only

POWER PLANT: One BMW 003A-1 turbo-jet engine, rated at 800 kp

PERFORMANCE: 470 mph (estimated)

COMMENT: This Arado design dates back to an early 1943s project of a small turbo-jet engine powered ground attack aircraft. In late 1944 this design was revised and submitted for the Volksjäger (Peoples Fighter) competition. The Ar E.580 had an unswept wing that was mounted low on the fuselage. The tail unit had twin fins and rudders. A single BMW 003A-1 jet engine was positioned above the fuselage with the air intake close to the cockpit partially obstructed by the bulged canopy. A tricycle landing-gear was provided. The winner of the competition was the Heinkel He 162 “Spatz” (“Sparrow”). So the Arado project was cancelled. (Ref.: 17)

TYPE: Interceptor, Fighter. Project.

ACCOMMODATION: Pilot only, in prone position

POWER PLANT: One Saenger-Lorin ram-jet

PERFORMANCE:  500 mph at 30,000 ft (estimated)

COMMENT: A similar interceptor project by Eugen Sänger from the Škoda-Kauba company was the Sk P.14-02. Compared to the Sk P.14-01 the design was smaller, had a shortened fuselage and the wings set in a more forward position. As its predecessor the Škoda-Kauba Sk P.14-02 took-off an a slightly lighter three-wheeled trolley, assisted by four Schmidding 109-533 solid-fuel rockets. Additionally the acceleration was needed to reach the speed where the ram-jet would work. The aircraft was landed on a retractable skid. Performance data were similar to the Sk P.14-01. None of the projected aircraft to fly on ramjet power were completed. (Ref.: 20)

TYPE: Interceptor-fighter. Project.

ACCOMMODATION:Pilot only, in prone position

POWER PLANT: One Sänger-Lorin ramjet, rated at 1,350 kp at 33,000 ft

PERFORMANCE: 545 mph at 33,000 ft, (estimated)

COMMENT: Škoda-Kauba Sk P.14-01 was a ramjet-powered fighter project for the Luftwaffe. It was designed by Eugen Sänger and a team of 80 Czech and 40 German engineers of the Škoda-Kauba industries in the occupied Czech Republic towards the end of WWII. The ramjet had a diameter of 1.5 m and a length of 9.5 m, the massive engine and its tubular air-intake duct formed most of the fuselage structure. The aircraft was flown by a pilot in prone position. For take-off the aircraft was hoisted on a three-wheel trolley and in order to bring the ramjet to a speed where it would work, the trolley was accelerated by means of by two Walter HKW 109-500, rated at 500 kp each.  Additional four Schmidding 109-533 solid fuel rockets could be attached to the aircraft with 1,000 kp thrust each for 12 seconds. The aircraft was landed on a retractable skid. The ramjet was fed by carbon dust or heavy oil. (Ref.: 20)