Developed as the AVRO , transferred to HAWKER SIDDELEY as HS in Built in several series: most advanced variant Super Designed by AV Roe & Co Ltd, the type was later built by Hawker Siddeley as the HS, the majority having been built under the aegis of Hawker Siddeley. The AVRO / Hawker Siddeley HS is a twin-engined regional airliner for max. 58 passengers produced by the British manufacturer AVRO, A.V. Roe and.
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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.
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Avro concentrated on performance, notably for STOL operations, and found a dedicated market. The original design was started inafter 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 F27but 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 performanceallowing 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 Juneand 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 siddeleg and strengthened cabin floor were offered as options on the 2A.
Hawker Siddeley HS Photos and Pictures –
In the Series 2B was introduced, with a 4-foot increase in wingspanMk engines, a modernized passenger cabin, and improvements to the fuel, water methanol injection systemand engine fire protection systems.
Ina 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 abreasthowever most passenger HS s still in service are operated as quick change combiswith 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. From Wikipedia, the free encyclopedia.
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Hawker Siddeley Andover
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