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Hawker Hedgehog

The Hawker Hedgehog was a three-seat reconnaissance biplane, to be used for naval scouting, produced to meet Air Ministry Specification 37/22.

Hedgehog
Role Naval reconnaissance
Manufacturer Hawker Aircraft
First flight 1924
Status Prototype
Number built 1

It was designed in 1923, and had its first flight the next year, piloted by F. P. Raynham. The crew consisted of the pilot, an observer and an air gunner. Its construction was typical of the period: a wooden structure covered with fabric. The powerplant was a nine-cylinder Bristol Jupiter IV radial engine driving a two-bladed wooden propeller.

While testing was successful, on completion of the flight tests, the project was cancelled. This was due to the Hedgehog's performance not being sufficiently better than the existing aircraft used for naval reconnaissance, the Avro Bison and Blackburn Blackburn. Consequently, only one prototype was built. The armament of the aircraft was one fixed forward-firing .303 in (7.7 mm) Vickers gun and one .303 in (7.7 mm) Lewis gun on a Scarff ring in the rear cockpit. The aircraft was fitted with floats that contained wheels to enable use as an amphibian. The wings could be folded, so that the width was reduced to 16 ft 7½ in (4.87 m) for storage.

Specifications edit

Data from Hawker Aircraft since 1920 [1]

General characteristics

  • Crew: three
  • Length: 30 ft 8+34 in (9.366 m)
  • Wingspan: 40 ft 0+12 in (12.205 m)
  • Width: 16 ft 7+12 in (5.067 m) (wings folded)
  • Height: 12 ft 6 in (3.81 m)
  • Wing area: 480.7 sq ft (44.66 m2)
  • Empty weight: 2,995 lb (1,359 kg)
  • Gross weight: 4,791 lb (2,173 kg)
  • Max takeoff weight: 4,800 lb (2,177 kg) (overload)
  • Fuel capacity: 134 imp gal (161 US gal; 610 L)
  • Powerplant: 1 × Bristol Jupiter IV 9-cylinder radial engine, 398 hp (297 kW)
  • Propellers: 2-bladed wooden

Performance

  • Maximum speed: 120.5 mph (193.9 km/h, 104.7 kn) at sea level
  • Cruise speed: 89 mph (143 km/h, 77 kn)
  • Stall speed: 45 mph (72 km/h, 39 kn) with flaps
  • Endurance: 2.5 hr
  • Service ceiling: 13,500 ft (4,100 m)
  • Time to altitude: 23 min 59 s to 10,000 ft (3,000 m)

Armament

References edit

  1. ^ Mason 1991, pp.113-115.
  • Mason, Francis K. Hawker Aircraft since 1920 London:Putnam, 1991. ISBN 0-85177-839-9.

hawker, hedgehog, three, seat, reconnaissance, biplane, used, naval, scouting, produced, meet, ministry, specification, hedgehogrole, naval, reconnaissancemanufacturer, hawker, aircraftfirst, flight, 1924status, prototypenumber, built, designed, 1923, first, f. The Hawker Hedgehog was a three seat reconnaissance biplane to be used for naval scouting produced to meet Air Ministry Specification 37 22 HedgehogRole Naval reconnaissanceManufacturer Hawker AircraftFirst flight 1924Status PrototypeNumber built 1It was designed in 1923 and had its first flight the next year piloted by F P Raynham The crew consisted of the pilot an observer and an air gunner Its construction was typical of the period a wooden structure covered with fabric The powerplant was a nine cylinder Bristol Jupiter IV radial engine driving a two bladed wooden propeller While testing was successful on completion of the flight tests the project was cancelled This was due to the Hedgehog s performance not being sufficiently better than the existing aircraft used for naval reconnaissance the Avro Bison and Blackburn Blackburn Consequently only one prototype was built The armament of the aircraft was one fixed forward firing 303 in 7 7 mm Vickers gun and one 303 in 7 7 mm Lewis gun on a Scarff ring in the rear cockpit The aircraft was fitted with floats that contained wheels to enable use as an amphibian The wings could be folded so that the width was reduced to 16 ft 7 in 4 87 m for storage Specifications editData from Hawker Aircraft since 1920 1 General characteristicsCrew three Length 30 ft 8 3 4 in 9 366 m Wingspan 40 ft 0 1 2 in 12 205 m Width 16 ft 7 1 2 in 5 067 m wings folded Height 12 ft 6 in 3 81 m Wing area 480 7 sq ft 44 66 m2 Empty weight 2 995 lb 1 359 kg Gross weight 4 791 lb 2 173 kg Max takeoff weight 4 800 lb 2 177 kg overload Fuel capacity 134 imp gal 161 US gal 610 L Powerplant 1 Bristol Jupiter IV 9 cylinder radial engine 398 hp 297 kW Propellers 2 bladed woodenPerformance Maximum speed 120 5 mph 193 9 km h 104 7 kn at sea level Cruise speed 89 mph 143 km h 77 kn Stall speed 45 mph 72 km h 39 kn with flaps Endurance 2 5 hr Service ceiling 13 500 ft 4 100 m Time to altitude 23 min 59 s to 10 000 ft 3 000 m Armament Guns 1 0 303 in 7 7 mm Vickers machine gun 1 0 303 in Lewis gun on a Scarff ringReferences edit nbsp Wikimedia Commons has media related to Hawker Hedgehog Mason 1991 pp 113 115 Mason Francis K Hawker Aircraft since 1920 London Putnam 1991 ISBN 0 85177 839 9 Retrieved from https en wikipedia org w index php title Hawker Hedgehog amp oldid 1037349388, wikipedia, wiki, book, books, library,

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