The Vought F7U Cutlass swept flying wing design had a large central nacelle and two substantial vertical tail surfaces. The first U.S. fighter designed from the start to use afterburners. Three prototype XF7U-1 (122472-122474) were built. The first flying on 29 September 1948.

Vought F7U Cutlass Article

1950 production was 20 F7U-1 (124415-124434) as trainers.

S/ns 125322-125409 were assigned for F7U-2s, but production was cancelled.

After 14 F7U-1’s, the Cutlass was in production for the U.S. Navy in 1951 as the F7U-3 interceptor and F7U-3P photo-reconnaissance aircraft with lengthened nose containing cameras. 288 F7U-3 (128451-128478 and 139868-139917 et al) were built, with a redesign, radar gunsight, four 20mm cannon; and two 4600 lb J46-WE-8A engines.

Built in 1954 were the F7U-3M missile platform and F7U-3P photo-recon version.

Gallery

F7U-1 Cutlass
Engines: 2 x Westinghouse J34-WE-32, 3000 lb
Wingspan: 38’8″
Length: 39’7″
Speed: 672 mph
Range: 1170 mi
Ceiling: 41,400 ft
Armament: 6×20 mm. cannon
Seats: 1

F7U-3
Engines: 2 x J46-WE-8A, 4600 lb / 6100 lb afterburn
Wingspan: 38 ft 8 in
Length: 40 ft 10.5 in
Height: 11 ft 6.5 in
Empty weight: 13,100 lb
Normal loaded weight: 20,000 lb
Max weight: 23,000 lb
Max speed: 670 mph / 705 mph afterburn at SL
Max ROC: 13,000 fpm
Range: 660 mi
Ceiling: 40,000 ft
Armament: four 20m cannon
Bombload: 5400 lb

F7U-3P
Naval photo- reconnaissance aircraft
Engines: 2 x Westinghouse J46-WE-8A turbojets, 4,800 lb. thrust
Wingspan: 38 ft. 8 in.
Loaded weight: 20,000 lb
Max speed: 670 m.p.h.
Ceiling: Over 45,000 ft.
Crew: 1
Armament: None

To meet the need for long range high altitude heavy bomber aircraft, capable of carrying nuclear weapons, the Avro Vulcan, along with the Handley Page Victor and Vickers Valiant, was developed in accordance with an Air Ministry specification that originated in 1947.

Vickers Valiant Article

The Vickers Valiant was designed to Air Ministry specification B.9/48. It was a cantilever shoulder-wing monoplane of all-metal stressed-skin construction. The wing had compound sweepback on the leading edge, somewhat similar to that of the Handley Page Victor, air-brakes, double-slotted flaps and powered ailerons. The fuselage was a circular-section semi-monocoque structure, incorporating a pressurised cell to contain the crew of five, and a large bomb bay which later proved capable of accommodating a Blue Steel stand-off weapon. The tail unit was conventional, but the tailplane was mounted almost half-way up the fin to keep it clear of the efflux from the four turbojet engines, buried in the inner wing adjacent to the fuselage. Landing gear was of tricycle type electrically retracting tan¬dem main gears folding outwards. The Valiant was largely conventional in construction, with a giant radar in its underside, an inflight refuelling probe (added after delivery) above and a ventral blister for a visual bombing station. The main weapon bay could house all the UK’s nuclear bombs (or the Blue BoarTV guided bombs) or up to 21 HE bombs of 454 kg (1,000 lb) each. One unusual feature was the extensive use of electrical power for the actuation of practically all movable units, even powered controls. The only exception was a minor hydraulic system for brakes and powered steering, but even this had its pumps driven by electric motors.

Two prototypes were ordered initially, one to be powered by four Rolls-Royce RA.3 Avon 204 turbojets and the other by four Armstrong Siddeley Sapphires. The first prototype made its maiden flight on 18 May 1951, but was lost in an accident on 12 January 1952. The second prototype flew first on 11 April 1952, but was powered by RA.7 turbojets instead of the Sapphires as planned originally.

In spite of the fact that two types of so-called V bomber were already on order it was put into production as well, allegedly as an insurance against ‘failure’ of the others.

Named Valiant, B.1 began to enter service in January 1955, the first of the V-bombers to serve with the RAF. They were followed by B(PR).1 long-range strategic reconnaissance; B(PR)K.1 multi-purpose bomber, photo-reconnaissance, tanker; and BK.1 bomber/tanker aircraft. Production totalled 111 examples, including one B.2 pathfinder prototype. Used extensively in service, Valiants dropped the first British hydrogen and atomic bombs and during operations in the Suez campaign operated with high-explosive bombs.

Vickers built 108 including prototypes, and from January 1955 these served with 10 RAF squadrons. At first painted all in anti flash white, with very pale roundels and serials, they set a high standard in navigation and bombing, though most crews wished to forget their one taste of actual warfare when in late 1956 four squadrons bombed Egyptian targets during the ill starred Suez campaign. Valiants carried out all of the UK’s live air tests of nuclear weapons. There were reconnaissance, tanker and multi role versions, and from 1963 Valiants were given regular grey and green camouflage and assigned to low level missions using conventional bombs in support of SACEUR (Supreme Allied Commander, Europe) as a NATO force, though still based in the UK. By this time they were the RAF’s only inflight refuelling tanker force.

In the Autumn of 1957 these four Valiants, with two Vulcans, flew to the US to compete with USAF teams in anannual bombinng compteition. One Valiant came 11th of the 100 aircraft competing.

Intended for fast high-altitude strategic bombing, the Valiant – in company with other V-bombers – was switched to low-level operations. There seems little doubt that the stresses imposed by such a role accelerated the wingspan metal fatigue first reported in late 1964, and which led to the scrapping of all Valiants in January 1965.

The RAF did not buy the Valiant Mk 2, first flown in 1953, which was specially designed for low level operations. With just over 100 built at Brooklands aerodrome, production ended in the autumn of 1957.

Gallery

Vickers Valiant B.Mk.1
Engines: 4 x Rolls-Royce RA.28 Avon 204/205, 10,050 lb / 44.7kN
Wingspan: 34.85 m / 114 ft 4 in
Length: 32.99 m / 108 ft 3 in
Height: 9.8 m / 32 ft 2 in
Wing area: 219.43 sq.m / 2361.92 sq ft
Max take-off weight: 63503 kg / 140001 lb
Empty weight: 34419 kg / 75881 lb
Max fuel w/underwing tanks: 9972 gal
Max speed: 492 kts / 912 km/h / 567 mph at 30,000 ft
Max cruise: 553 mph at 30,000 ft
Service Ceiling: 16460 m / 54000 ft
Range w/max.fuel: 7242 km / 4500 miles
Bombload: 9525kg / 21,000 lb or 2 x 1615 flight refuelling tanks
Crew: 5

Valiant B(K)Mk.1
Type: five seat bomber and inflight refuelling tanker
Engines: 4 x 4763 kg (10,500 lb) thrust Rolls Royce Avon 201 turbojets
Max speed 912 km/h (567 mph) at 9145 m (30,000 ft)
Service ceiling: 16460 m (54,000 ft)
Range with reduced bombload 7242 km (4,500 miles)
Wing span: 34.85 m (114 ft 4 in)
Length (normal long ECM tailcone): 33.00m(108ft 3in)
Height: 9.81 m (32 ft 2 in)
Wing area: 219.44 sq.m (2,362.0 sq ft)
Bombload: 9526 kg (21,000 lb)