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  • BMW Strahlbomber I / P.1 Jet-Powered Heavy Bomber Concept

    The Strahlbomber I heavy bomber was a conceptual design put forth by BMW to help sell its upcoming 018 series turbojet engine during World War 2.

     Updated: 4/25/2016; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    In the years leading up to World War 2 (1939-1945) the German Luftwaffe mistakenly neglected heavy bomber types while its future enemies pushed several classic designs through. When the war arrived in Europe, the Luftwaffe was forced to make do with a collection of medium-class bombers like the Dornier Do 17, the Junkers Ju 88 and the Heinkel He 111 (all detailed elsewhere on this site). The push for heavy bomber platforms came much too late for the service, particularly as air superiority changed in favor of the Allies and the German focus landed squarely on defensive-minded fighters and interceptors.

    It was in 1944 that BMW began work on an all-new in-house turbojet engine which was intended to see considerable operational service through an all-jet bomber force being planned by the Luftwaffe for 1947. To help sell aeronautical engineers on the merits of the new, more powerful and reliable engine, company personnel arranged four heavy bomber conceptual designs based on the upcoming BMW 018 system. The power afforded by a collection of these engines theoretically allowed for greater payloads taken over longer distances than seen in conventional prop-powered bombers like the American Boeing B-17 "Flying Fortress, the Consolidated B-24 "Liberator", and the British Avro Lancaster. The BMW intent was not to deliver a new bomber to the Air Ministry, per se, but rather sell a design that would rely on the engines it would be making.

    One of the four designs fleshed out by BMW engineers was the "Strahlbomber I". It utilized a swept-back wing planform (the wings shoulder-mounted on the fuselage), a single vertical tail fin and no horizontal tailplanes. The cockpit - seating two crew (assumed back-to-back) - was fitted at the extreme front end of the fuselage with fuel, avionics, bomb stores and the like installed in the center-aft section of the airframe. The fuselage tapered towards the tail in the usual way and proposed armament became 2 x 30mm MK 108 rear-facing cannons intended to counter the threat posed by trailing intercepting aircraft. It would mostly be aimed by way of periscope or similar in-direct method and fired remotely by the rear crewman.

    The original Strahlbomber I design called for no less than 6 x BMW 003 turbojet engines of 1,764 lb thrust each with the later intent being that 4 x BMW 018 turbojets would be substituted in their place, these offering upwards of 7,500 lb of thrust each. A large collection of turbojet engines in a single design was a common feature of early jet aircraft - the engines were thirsty and generally seen as unreliable despite their promise of enhanced performance.

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    BMW Strahlbomber I Technical Specifications

    Service Year: 1944
    Type: Jet-Powered Heavy Bomber Concept
    National Origin: Nazi Germany
    Manufacturer(s): BMW (Bayerische Motoren Werke GmbH) - Nazi Germany
    Production Total: 0

    Structural (Crew Space, Dimensions and Weights)

    Operating Crew: 2
    Length: 60.70 feet (18.5 meters)
    Width: 86.94 feet (26.50 meters)
    Height: 16.40 feet (5.00 meters)

    Weight (Empty): 36,376 lb (16,500 kg)
    Weight (MTOW): 50,045 lb (22,700 kg)

    Installed Power and Standard Day Performance

    Engine(s): ORIGINAL: 6 x BMW 003 turbojet engines developing 1,764 lb of thrust each; LATER: 4 x BMW 018 turbojet engines developing 7,500 lb of thrust each.

    Maximum Speed: 510 mph (820 kph; 443 knots)
    Maximum Range: 1,616 miles (2,600 km)
    Service Ceiling: 36,089 feet (11,000 meters; 6.84 miles)
    Rate-of-Climb: 1,300 feet-per-minute (396 m/min)

    Armament / Mission Payload

    2 x 30mm MK 103 cannons in rear-facing position to be fired remotely.

    Up to 8,000lb of conventional drop stores carried internally.

    Global Operators / Customers

    Nazi Germany (planned)

    Model Variants (Including Prototypes)

    Strahlbomber I - Base Project Name

    P.1 - Project One