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Focke-Wulf Fw BMW803

Twin-Boom Pusher Fighter Concept

Nazi Germany | 1943

"This Focke-Wulf twin-boom fighter project borrowed much from the Fw 189 Uhu design - though wrapped around the BMW 803 radial engine."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Focke-Wulf Fw BMW803 V1 Twin-Boom Pusher Fighter Concept.
1 x BMW 803 liquid-cooled radial piston engine developing 4,000 horsepower driving 2 x Three-bladed propellers in contra-rotating fashion in "pusher" arrangement at rear of the fuselage.
454 mph
730 kph | 394 kts
Max Speed
36,745 ft
11,200 m | 7 miles
Service Ceiling
684 miles
1,100 km | 594 nm
Operational Range
The nose-to-tail, wingtip-to-wingtip physical qualities of the Focke-Wulf Fw BMW803 V1 Twin-Boom Pusher Fighter Concept.
45.3 ft
13.80 m
O/A Length
43.3 ft
(13.20 m)
O/A Width
10.5 ft
(3.20 m)
O/A Height
13,944 lb
(6,325 kg)
Empty Weight
16,535 lb
(7,500 kg)
Available supported armament and special-mission equipment featured in the design of the Focke-Wulf Fw BMW803 Twin-Boom Pusher Fighter Concept .
4 x 20mm MG 151 automatic cannons at sides of forward fuselage.

2 x 30mm MK 103 automatic cannons at sides of forward fuselage.
4 x 7.92mm machine guns in wing roots (two guns per wing root).

2 x 550lb or 1,100lb conventional drop bombs OR 2 x Jettisonable fuel tanks.
Notable series variants as part of the Focke-Wulf Fw BMW803 family line.
Fw BMW803 - Base Project Designation.
Fw BMW803 V1 - Original design study.
Fw BMW803 V2 - Second study with nose-mounted radiator.
Fw BMW803 V3 - Third study with boom-mounted radiators.

Authored By: Staff Writer | Last Edited: 11/05/2020 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

Even before the excellent Focke-Wulf Fw 190 single-seat, single-engine fighter entered the war for Germany in World War 2 (1939-1945), company engineers were already hard at work at squeezing every ounce of power out of the design - with a focus on improving high-altitude performance. This led to a series of fighter design studies that ran throughout the war years, resulting in the Fw 190 airframe being considered with various powerplant installations including the BMW 802 radial. One of the more offbeat approaches by the concern became a twin-boom monoplane which was to sit its single pilot at the extreme front end of the fuselage and have a BMW 803 series radial engine at rear driving a pair of propeller units in "pusher" arrangement.

The aircraft owed some of its layout to the earlier Focke-Wulf Fw 189 Uhu ("Owl") of 1940 in its selection of twin-boom configuration with a similarly-shaped monoplane wing in which the leading edges were noticeably swept back against a relatively straight trailing edge. Instead of the Uhu's engines being fitted at the front end of each boom, the single BMW 803 was to be buried within the confines of the fuselage directly aft of the cockpit. The propulsion scheme would draw air through a slim circular intake design wrapping over and under the fuselage. A tricycle landing gear arrangement would provide the needed ground-running capability and was wholly-retractable - the main legs under the boom sections and the nose leg under the cockpit floor.

The pilot sat under a largely unobstructed canopy with excellent vision out over the short nosecone (views to his rear would restricted due to the raised dorsal spine and engine placement). As the nose was clear of any engine/propeller mounting, this gave relatively unfettered firing access to the proposed armament of 4 x 20mm MG 151 automatic cannons with two guns seated to either side of the cockpit walls. The firepower from a single burst would have been enough to bring down an Allied bomber of the day.

In addition to this, engineers also added future support for larger caliber cannons (presumably the German 30mm type) in place of the 20mm weapons and up to four machine guns at the wing roots (two guns per wing root).

For ground attack sorties, provision was given for the carrying of 2 x Conventional drop bombs, ranging from 550lb to 1,100lb) mounted under each boom. In lieu of this, the aircraft could also be equipped with jettisonable fuel drop tanks for extended operational ranges.

The fighter was to have an empty weight of 14,000lb with its Maximum Take-Off Weight (MTOW) reaching 16,535lb when fully-laden. Dimensions included a running length of 45.2 feet, a wingspan of 43.3 feet, and height of 10.5 feet.

The engine of choice was the BMW 803 28-cylinder, four-row series radial outputting 4,000 horsepower and this would be used to drive 2 x Three-bladed propeller units in contra-rotating fashion behind the fuselage (giving the appearance of a six-bladed unit). The BMW 803 was actually a mating of two BMW 801 engines seated back-to-back. As the heat generated from such a pairing proved substantial, liquid-cooling was employed to keep temperatures in check.

Despite the awesome power on paper, the engine did not evolve into a production-quality form. Just twelve prototypes were built during the war.

Estimated performance figures with the BMW 803 installed in the proposed Focke-Wulf fighter design included a maximum speed of 455 miles-per-hour at nearly 30,000 feet with a service ceiling of 36,750 feet possible. Range was out to a useful 1,000 kilometers.

As impressive at it may have appeared on paper, the Fw BMW803 design did not extend beyond the paper stage. Some modifications of the aircraft were made in 1943, primarily to the cooling system, but the project fell to naught. It does, however, appear to have influenced the jet-and-rocket-powered Fw P.VII "Flitzer" fighter proposal of 1944 (detailed elsewhere on this site) - which also came to nothing.

A second iteration of the same Focke-Wulf BMW803-based design installed an oversized "drum" style radiator at the nose. This version also had a planned ejection seat. A third design choice saw radiators fitted to the heads of the boom assemblies.

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Total Production: 0 Units

Contractor(s): Focke-Wulf-Nazi Germany
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Going Further...
The Focke-Wulf Fw BMW803 Twin-Boom Pusher Fighter Concept appears in the following collections:
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