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  • Heinkel He P.1077 (Julia) Rocket-Powered Interceptor Aircraft

    The Heinkel He P.1077 rocket-powered interceptor was approved by German authorities but evolved too slowly and never saw a prototype completed before the end of the war.

     Updated: 5/2/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    1944 proved a critical year for Germany and its fabled Luftwaffe. Once a master of the skies, advanced products fielded by the Allies in number soon began to remove the German initiative. The Allied reach had expanded to unacceptable lengths, able to target all German-held territories and even German soil itself - no part of the Reich in Europe was safe now. This brought into question the levels of defense for Germany and, in particular, what was being done to counter the threat of American heavy bombers during the day and British heavy bombers during the night. As such, various programs were enacted - primarily through the "Emergency Fighter Program" born on July 3rd, 1944 - to find viable defensive-minded interceptors capable of reacting swiftly to incoming enemy flight groups and engaging bombers with appropriate armament.

    Ernst Heinkel headed the Heinkel AG concern which was best known for its He 111 Medium bomber of Battle of Britain fame. The German Air Ministry (RLM) charged any interested German aviation firm with submitting a proposal for an inexpensive single-seat, turbojet-powered interceptor. Four companies responded with varying designs including Heinkel, Messerschmitt, Bachem and Junkers. The Heinkel submission - P.1077 - was selected ahead of the others. However, the Bachem P.20 went on to be evolved into the operational Ba 349A "Natter" ("Viper") along another avenue. Design of the P.1077 originated with Wilhelm Benz and was given the program name of "Julia".

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    Heinkel He P.1077 (Julia) Technical Specifications

    Service Year: 1945
    Type: Rocket-Powered Interceptor Aircraft
    National Origin: Nazi Germany
    Manufacturer(s): Heinkel AG - Nazi Germany
    Production Total: 0

    Structural (Crew Space, Dimensions and Weights)

    Operating Crew: 1
    Length: 22.64 feet (6.9 meters)
    Width: 15.09 feet (4.60 meters)
    Height: 3.28 feet (1.00 meters)

    Weight (Empty): 2,425 lb (1,100 kg)
    Weight (MTOW): 4,189 lb (1,900 kg)

    Installed Power and Standard Day Performance

    Engine(s): 1 x Walter HWK 509C liquid-fuel rocket motor developing 3,750lb of thrust; 4 x Schmidding 533 jettisonable booster rockets developing 2,650lb of thrust each during take-off.

    Maximum Speed: 559 mph (900 kph; 486 knots)
    Maximum Range: 40 miles (64 km)
    Service Ceiling: 49,213 feet (15,000 meters; 9.32 miles)
    Rate-of-Climb: 39,400 feet-per-minute (12,009 m/min)

    Armament / Mission Payload

    2 x 30mm MK 108 cannons in blisters along forward fuselage sides.

    Global Operators / Customers

    Nazi Germany

    Model Variants (Including Prototypes)

    He P.1077 "Julia" - Base Product Designation

    He P.1077 "Romeo" - Proposed variant with Pulse Jet engine.