Junkers Ju 488

The Junkers Ju 488 was a proposed four-engined German heavy strategic bomber under development in World War II. It was based on the twin-engined Ju 188 series but with additional engines mounted on a new wing inner section. One prototype was begun but never finished.

Design and development

Junkers conceived the Ju 488 in 1943 as a stopgap long-range heavy bomber until the Focke Wulf Ta 400 could enter service. Most of its design would re-use sub assemblies from the existing twin-engined '88 series, the Ju 188, Ju 288, and Ju 388 (especially its cockpit). These would be mated to new inner wing panels fitted with two more engines and an additional midsection fuselage assembly. The result would be a sleek aircraft with a length of and a wingspan of .

A contract for ten prototypes was placed with the first, V.401, being a shell airframe having no operational equipment. The first representative prototype would be V.403.

Junkers were too busy to undertake the detailed design and manufacture themselves so they subcontracted it out across French companies Latécoère, Bréguet and SNCASE, with V.401 being built by Bréguet at Toulouse.

The airframe was based on the Ju 188, using the tail unit of the Ju 288. These were supplied by the regular manufacturers, while the new parts were made in France. The new wing inner sections were of parallel chord with near-duplicate engine and undercarriage installations to the Ju 188, creating a four-engined layout with four main undercarriage wheels. Fuel was carried in additional tanks in both the wing and fuselage extensions.

The Ju 488 was expected to be powered initially by four BMW 801TJ or BMW 802 radial engines, with each engine nacelle having a standard Ju 88-style rearwards-retracting single strut main landing gear unit, rotating through 90° to lie flat (with the main wheel above the end of the strut) within each of the nacelles. For the V 403 and subsequent machines the 24-cylinder Jumo 222 liquid-cooled multibank inline engine may have been under consideration.Sharp, p.92: "''The historical account that included this information, which also suggested that the Ju 488 was to have a dorsal gun turret, was written during the 1960s at a time when most intelligence reports on German wartime projects were still classified as secret. It ought now to be treated with a degree of caution...''". The contemporary drawings, reproduced alongside by Sharp, lack any sign of a dorsal turret.

V 403 and subsequent machines differed in many small ways from V 401 and their design was never finalised. A defensive twin-gun tail barbette was planned and a reconnaissance version would have a shallower fuselage than the bomber.

V.401 was still unfinished when it was destroyed on the night of 16-17 July 1944, in a raid by the French Resistance. Toulouse was liberated the next month and the project ended.Sharp (2016)

Specifications (Ju 488A-1 - estimated)

References

Notes

Bibliography

* Filly, Brian. (1991) ''Junkers Ju 88 in Action, part 2''. Carrollton, TX: Squadron/Signal Publications, Inc.
* Green, William. (1968) ''War Planes of the Second World War:Volume Ten Bombers and Reconnaissance Aircraft''. London:Macdonald.
* Green, William. (1970) ''Warplanes of the Third Reich''. London: Macdonald and Jane's. Pages 520–522.
* Sharp, Dan. (2016) ''Luftwaffe: Secret Bombers of the Third Reich'', Mortons. Pages 90-93.
* Smith, J.R. and Kay, Anthony. (1972) ''German Aircraft of the Second World War''. London: Putnam and Company, Ltd. .

External links

{{Authority control

1940s German bomber aircraft
World War II heavy bombers of Germany
Ju 488
Low-wing aircraft
Four-engined tractor aircraft
Four-engined piston aircraft
Twin-tail aircraft