Junkers Ju-287

The Junkers Ju 287 was an aerodynamic testbed built in Germany to develop the technology required for a multi-engine jet bomber.

It was powered by four Junkers Jumo 004 engines, featured an unusual and novel forward-swept wing, and apart from the wing was assembled largely from components scavenged from other aircraft.

It was one of the very few jet propelled aircraft ever built with fixed landing gear.

Variants

Ju 287 V1 (cover designation Ju 288 V201)

First prototype, technology demonstrator with fixed landing gear, fuselage taken from He 177A-5, tail empennage taken from Ju 188G-2, and 4 x Jumo 004B engines.

Ju 287 V2 (cover designation Ju 288 V202)

Second prototype; similar to Ju 287 V1 in overall layout, but with tail wheel removed, horizontal stabilizer lowered 12 inches (30 centimetres), and inward main undercarriage braces; originally intended to utilize 4 x BMW 003s in under wing pairs and 2 x Jumo 004Bs mounted on the sides of the fuselage, but engine configuration later changed to utilize two under wing triple pack configurations composed of 2 x Jumo 004Bs and 1 x BMW 003.

Virtually complete when Ju 287 program halted in late 1944, but not flown.

Ju 287 V3

Third prototype, intended prototype for Ju 287A-1; fuselage based on that of the Ju 288, fully glazed, pressurized cockpit accommodating three crewmembers; retractable landing gear, no provision for armament, and 6 x BMW 003 engines mounted in two triple pack configurations under the wings.

Approximately 80% complete by war’s end.

Ju 287 V4

Fourth prototype, intended prototype for Ju 287 A-2; layout similar to Ju 287 V3 except in having 6 x Jumo 004Cs (4 mounted in under wing pairs, 2 mounted on the sides of the fuselage); reportedly 60 percent complete on the eve of Allied takeover of Junkers factory at Dessau.

Ju 287 V5 & V6

Armed prototypes equipped with ejection seats and an FHL 131/Z turret with two MG 131 machine guns; V5 intended as prototype of the Ju 287 B-1.

Ju 287 A-1

Production version based on Ju 287 V3 with operational equipment and FHL 131/Z turret featuring two MG 131 machine guns; no ejection seat.

Ju 287 A-2

Production version based on Ju 287 V4 with operational equipment and FHL 131/Z turret featuring two MG 131 machine guns; no ejection seat.

Ju 287 B-1

Production version based on Ju 287 V5 with operational equipment, FHL 131/Z with two MG 131 machine guns, and larger nose wheels; no ejection seat.

Ju 287 B-2

Variant similar to baseline production Ju 287 but powered by either two Junkers Jumo 012 or BMW 018 turbojets mounted under the wings.

EF 131

Similar to production Ju 287 but with fuselage stretched by 8.2 feet (2.5 meters) and two under wing triple packs of RD-10s.

Specifications

Ju 287 V1

Crew

Two

Length

18.30 m (60 ft 0 in)

Wingspan

20.11 m (66 ft 0 in)

Height

4.70 m (15 ft 5 in)

Wing area

61 m2 (660 sq ft)

Airfoil

Root

Ju 0.9 23 10.7-0.825-40;

Tip

Ju 0.9 23 12.7-0.825-40

Empty weight

12,500 kg (27,558 lb)

Gross weight

20,000 kg (44,092 lb)

Powerplant

4 × Junkers Jumo 004B-1 turbojet engines, 8.825 kN (1,984 lbf) thrust each

Performance

Maximum speed

558 km/h (347 mph, 302 kn) at 6,000 m (19,685 ft)

Cruise speed

512 km/h (318 mph, 276 kn) at 7,000 m (22,966 ft)

Range

1,570 km (980 mi, 850 nmi)

Service ceiling

9,400 m (30,800 ft)

Rate of climb

9.67 m/s (1,904 ft/min).

 

 

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