Handley Page Hyderabad

The Handley Page H.P.24 Hyderabad was a British twin-engine biplane heavy bomber built by Handley Page which served with the Royal Air Force between 1925 and 1933. It was the last wooden heavy bomber to serve with the RAF.

Hyderabad
Role Heavy bomber
Manufacturer Handley Page
First flight 23 October 1923
Introduction 1925
Retired 1933
Primary user Royal Air Force
Number built 39[lower-alpha 1]
Developed from Handley Page W.8
Variants Handley Page Hinaidi

Design and development

The Hyderabad was a development of the Handley Page W.8 airliner, initially designated the W.8D, to meet Air Ministry Specification 31/22 for a replacement for the Vickers Vimy for the Royal Air Force.[2]

The Hyderabad was structurally similar to the W.8, and was an all-wooden, three-bay biplane powered by two Napier Lion engines. It was fitted with a single fin and rudder, and was one of the first large aircraft to be fitted with Handley Page leading edge slats, giving good lateral stability.[3]

A single prototype W.8D was ordered by the Air Ministry in January 1923, first flying in October 1923 and was delivered to the Aeroplane and Armament Experimental Establishment (A & AEE) at Martlesham Heath for evaluation against the Vickers Virginia.[2] On the basis of this evaluation, the aircraft, now called the Hyderabad, was ordered for use by the RAF.[2]

Operational history

The Hyderabad entered service with No. 99 (Bomber) Squadron RAF at RAF Bircham Newton in December 1925,[2] replacing the single-engined Avro Aldershot bomber.[3] Deliveries were slow, and accidental losses were high, with a second squadron, No. 10 Squadron RAF at RAF Upper Heyford only forming in 1928.[3] In 1928 and 1929, two Special Reserve squadrons were formed, receiving the Hyderabad as equipment. The two regular squadrons were re-equipped with the Handley Page Hinaidi, an all-metal development of the Hyderabad in 1931, while the final reserve Squadron, No 503, continued with the Hyderabad in service until 1933.[2]

Operators
 United Kingdom

Specifications (Hyderabad)

Data from The British Bomber since 1914 [2]

General characteristics

  • Crew: 4
  • Length: 59 ft 2 in (18.03 m)
  • Wingspan: 75 ft 0 in (22.86 m)
  • Height: 16 ft 9 in (5.11 m)
  • Wing area: 1,471 sq ft (136.7 m2)
  • Empty weight: 8,910 lb (4,042 kg)
  • Gross weight: 13,590 lb (6,164 kg)
  • Powerplant: 2 × Napier Lion V or VA W-12 water-cooled piston engine, 500 hp (370 kW) each at 2,250 rpm
  • Propellers: 4-bladed fixed-pitch propellers

Performance

  • Maximum speed: 109 mph (175 km/h, 95 kn)
  • Range: 500 mi (800 km, 430 nmi)
  • Service ceiling: 14,000 ft (4,300 m)
  • Rate of climb: 800 ft/min (4.1 m/s)
  • Wing loading: 9.24 lb/sq ft (45.1 kg/m2)
  • Power/mass: 0.074 hp/lb (0.122 kW/kg)

Armament

  • Guns: 3 × .303 in (7.7 mm) Lewis Guns in nose, dorsal and ventral positions
  • Bombs: 1,100 lb (499 kg) bombs carried externally

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

Notes
  1. Original order was 44 plus prototype but a number of Hyderabads were completed as Hinaidis and others converted[1]

References
  1. Thetford 1976, pp. 283-285
  2. Mason, Francis K (1994), The British Bomber since 1914, London: Putnam Aeronautical Books, pp. 152–154, ISBN 0-85177-861-5
  3. Thetford, Owen (1957), Aircraft of the Royal Air Force 1918-57 (1st ed.), London: Putnam, pp. 242–243

Bibliography
  • Barnes, C. H. Handley Page Aircraft Since 1907. London: Putnam & Company, Ltd., 1987. ISBN 0-85177-803-8.
  • Clayton, Donald C. Handley Page, an Aircraft Album. Shepperton, Surrey, UK: Ian Allan Ltd., 1969. ISBN 0-7110-0094-8.
  • Thetford, Owen. Aircraft of the Royal Air Force since 1918.London: Putnam & Company. 1976 ISBN 0-370-10056-5
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.