HAWKER SIDDELEY HS.748 PDF

The Andover was named after the Avro Andover , a biplane transport used by the RAF for medical evacuation between the first and second world wars; and RAF Andover , where some of its trials were carried out. The Andover had a kneeling landing gear to make ramp loading easier. At the start of the s the Royal Air Force RAF issued a requirement for a medium tactical freighter and Avro started work on a military variant of the Rolls-Royce Dart -powered twin-engined Avro airliner. A prototype Avro Srs 2 was used for the trials. The RAF decided to order a military variant of the , designated the Avro ; and the original Avro prototype was modified with an upswept rear fuselage and rear loading ramp as the Avro MF, to test the military version.

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The Hawker Siddeley HS is a medium-sized turboprop airliner originally designed by the British firm Avro in the late s as a replacement for the aging DC-3s then in widespread service as feederliners.

Avro concentrated on performance, notably for STOL operations, and found a dedicated market. The original design was started in , after the Duncan Sandys Defence White Paper ended most military manned-aircraft development in the UK, and Avro decided to re-enter the civilian market. The Vickers Viscount had the larger end of the short-haul market, and Avro therefore decided to design a smaller regional airliner powered by two Rolls-Royce Dart turboprop engines, intended to replace the many DC-3 Dakotas that were by then reaching the end of their economic lifespan.

Original plans were for a 20—30 seat aircraft with a similar configuration to the Fokker F27 , but talks with potential customers soon led to a low-wing seat design being chosen for the project.

Avro was not the only company to see the potential for a DC-3 replacement, and by this point work on the 's direct competitor, the Fokker F27 Friendship turboprop, was well advanced. Avro therefore decided to compete by producing a more rugged design with better short-field performance, allowing it to operate from smaller airports and those with rough surfaces.

This was accomplished with a long, high lift wing and a unique single slot flap with a hinged flap tab at the trailing edge. The wing was mounted low on the fuselage with dihedral from the root, allowing good overall ground clearance and easy mounting of strong landing gear.

Other features of the included an internal engine starting system, and systems and structures that were designed to be easy to inspect and repair in the field with limited equipment. The was one of the first medium-sized aircraft to use fail-safe design principles in the structure, instead of the then common safe-life principles.

The first Avro flew from the company's Woodford, Cheshire aircraft factory on 24 June , and testing of the two prototypes quickly proved the type's short-field performance. By this point, Avro's individual identity within the Hawker Siddeley Group had ended and the design became known as the HS After the initial batch of series 1 aircraft, production switched to the series 2, similar to the series 1 but with more powerful RR Dart RDa 7 Mk engines and increased gross weight.

In the series 2A was introduced, the same basic aircraft but with Mk. From on, a large freight door in the rear cabin and strengthened cabin floor were offered as options on the 2A.

In the Series 2B was introduced, with a 4-foot increase in wingspan, Mk engines, a modernized passenger cabin, and improvements to the fuel, water methanol injection system, and engine fire protection systems.

In , a Hawker Siddeley was one of the last planes to be flown by noted aviator Howard Hughes. He made several flights, accompanied by Hawker Siddeley test pilot Tony Blackman, using the company's Hatfield airport. The HS was essentially a but with a redesigned rear fuselage and empennage which included a large rear loading ramp and a squatting main landing gear to facilitate loading large freight items.

Typical passenger seating in the HS is for 40—48 economy class seats 4 abreast , however most passenger HS s still in service are operated as quick change combis , with a movable bulkhead dividing the main cabin, with 4 to 40 seats in the rear section and cargo in the forward section. Several carriers use the as a bulk fuel hauler, with either seven or eight fixed tanks in the cabin with a total capacity of about litres US Gallons. As of July a total of 12 HS aircraft all variants remained in airline service.

British Virgin Islands. The undercarriage, propellers and nose are not original. Sign In Don't have an account? HS Contents [ show ]. Flight Testing to Win. Breaking News Events. News Updates from Kerala India". Archived from the original on 15 October Retrieved 15 November Retrieved 23 August The Hindu. Aviation Safety Network. Retrieved 22 May Retrieved 5 January ACIG Journal.

Retrieved 30 October South African Civil Aviation Authority. Retrieved 8 August CBC News. Retrieved 18 February Transport Canada. Jane's Civil and Military Aircraft Upgrades, — Jane's Information Group. Cudham: Kelsey Publishing. BBC News. Categories :. Cancel Save. Avro Hawker Siddeley Hindustan Aeronautics.

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Hawker Siddeley HS 748

One of the few places you can still see the venerable Hawker Siddeley HS. This British turboprop airliner also known as the Avro and Bae was once a common sight around the world on regional airline services. It was superseded by the British Aerospace ATP, and of the built, very few are now still in service. Most found themselves being used as freighters in remote areas, which is where Canada comes in. Here, there are four airlines which still count the HS. However, it is very rare to be able to fly as a passenger on them any more as they are used mostly for freight, or ferrying miners to remote communities.

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Hawker Siddeley HS 748s in Canada

The Hawker Siddeley HS is a medium-sized turboprop airliner originally designed and initially produced by the British aircraft manufacturer Avro. It was the last aircraft to be developed by Avro prior to its dissolution. The HS was developed during the late s as a move to re-orientate the company towards the civil and export markets. Powered by the popular Rolls-Royce Dart turboprop engine, it was specifically designed as a modern feederliner to act as a replacement for the aging Douglas DC-3s then in widespread service.

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