Hawker P.1052

P.1052
Role	research aircraft
Manufacturer	Hawker Aircraft Limited
First flight	19 November 1948
Status	Experimental
Primary user	Royal Aircraft Establishment
Number built	2
Developed from	Hawker Sea Hawk
Variants	Hawker P.1078 Hawker P.1081

The Hawker P.1052 was a British experimental aircraft built by Hawker Aircraft Limited for trials with swept wings.

Design and development

Designed to meet Air Ministry specification E.38/46 the P.1052 was similar to the Hawker P.1040 (Hawker Sea Hawk) in most aspects, with the main difference being the wings were swept back at an angle of 35°.^[1] The tailplane was cropped to a shorter span. The first prototype (VX272) first flew on 19 November 1948, and the second prototype (VX279) on 13 April 1949.^[1]

During the winter of 1949-50 the first prototype had both wings and fuselage strengthened after structural tests on a third, non-flying airframe. At about the same time the second prototype was fitted with a variable incidence tailplane. In 1950 this aircraft was rebuilt with a single jet outlet and swept empennage as the Hawker P.1081. Its now redundant rear fuselage was then strengthened, fitted with an arrestor hook and transferred after some delay to the first prototype. Now the only P.1052, it was fitted with a bullet fairing at the tailplane-fin intersection which improved its high speed behaviour. In May 1952, with a long stroke Sea Hawk undercarriage it undertook much delayed take-off and landing trials on board HMS Eagle. In June it received its last modification, a variable incidence swept tailplane, and it flew on high speed trials with the RAE until a forced landing in September 1953 took it out of service.^[1]

A rocket assisted version of the P.1052, designated P.1078 and using the Armstrong Siddeley Snarler engine was the subject of a design study, but because work on the unswept P.1040 based Hawker P.1072 was more advanced, the P.1078 was not built.^[1]

No more P.1052s were built as work had been transferred to the P.1067 (Hawker Hunter). The P.1052 was part of the transition from the straight-winged, centrifugally powered Sea Hawk to the axially powered, swept-wing Hunter.

Aircraft on display

The first prototype VX272 is displayed at the Fleet Air Arm Museum, Yeovilton.

Operators

 United Kingdom

• Royal Aircraft Establishment

Specifications (P.1052)

Data from Mason 1971, p. 330

General characteristics

• Crew: 1
• Length: Straight tailplane 39 ft 7 in (12.07 m)
• Wingspan: 31 ft 6 in (9.60 m)
• Height: 10 ft 6 in (3.20 m)
• Wing area: 258 ft² (23.97 m²)
• Empty weight: 9,450 lb (4,286 kg)
• Loaded weight: 13,488 lb (6,118 kg)
• Powerplant: 1 × Rolls-Royce Nene R.N.2 turbojet exhausting through wing root pipes, 5,000 lb (22.2 kN)

Performance

• Maximum speed: at sea level 593 kn (682.5 mph, 1,098 km/h)
• Service ceiling: 45,500 ft (13,870 m)
• Rate of climb: to 35,000 ft (10,640 m) 3,864 ft/min (19.6 m/s)

References

Notes

1. ^ ^{a b c d} Mason 1971, pp. 328–330

Bibliography

• Mason, Francis K (1971). Hawker Aircraft since 1920 (2nd ed.). London: Putnam. ISBN 0 370 00066 8. 

Further reading

• Green, William and Cross, Roy. The jet aircraft of the world. London: Macdonald and Company, 1955.
• Hannah, Donald. Hawker FlyPast Reference Library. Stamford, Lincolnshire, UK: Key Publishing Ltd., 1982. ISBN 0-946219-01-X.
• James, Derek N. Hawker, an Aircraft Album No. 5. New York: Arco Publishing Company, 1973. ISBN 0-668-02699-5. (First published in the UK by Ian Allan in 1972)
• Mason, Francis K. Hawker Aircraft since 1920. London: Putnam, 1991. ISBN 0-85177-839-9