de Havilland DH.114 Heron Wallpapers

[br] [br] [br] [br] [br]de Havilland DH.114 Heron Aircraft - photo wallpapers; Megawallpapers.org : The de Havilland DH.114 Heron was a small, propeller-driven British airliner that first flew on May 10 1950. It was a development of the de Havilland Dove, with a stretched fuselage and two more engines, for a total of four. The first deliveries were to NAC, (later part of Air New Zealand). The Heron was of all-metal construction, and was laid out as a conventional, low-wing monoplane with tricycle undercarriage. [br]One hundred fifty were built, exported to around 30 countries. Herons [br]later formed the basis for various conversions, such as the Riley Turbo Skyliner and the Saunders ST-27 and ST-28.[br]Immediately after World War II, the aircraft manufacturer De Havilland developed the DH.104 Dove, a small, two-engined passenger aircraft intended as a replacement for the earlier Dragon Rapide, [br]and which soon proved to be successful. As a further development, they [br]basically enlarged the Dove; lengthened the fuselage in order to [br]provide room for more passengers or freight, and increased the wingspan [br]to make room for two additional engines. The resulting aircraft was [br]supposed to be able to use many of the parts originally designed for [br]the Dove, thus simplifying logistics for airlines employing both types. The first Heron, model 1A suffered from a number of deficencies, as [br]NAC soon discovered. First of all, the aircraft was generally [br]underpowered. It was powered by four quite heavy engines (weighing [br]approximately 400 kg each), providing as little as 250 hp. By [br]comparison, later modifications or rebuilt aircraft (such as the [br]Saunders ST27) had more power in one engine than the Heron had in [br]total! Also, and contrary to the Dove, the Heron came with a fixed [br]undercarriage, and no nosewheel steering, which simplified maintenance, [br]but reduced the top speed. After 51 aircraft had been built of models 1A-D, production switched [br]to the model 2, featuring retractable landing gear, which reduced drag, [br]and fuel consumption, and increased the top speed somewhat. Model 2A [br]was the equivalent of 1A, the basic passenger aircraft; 1B/2B with [br]higher maximum takeoff weight, 2C featured fully-feathering propellers, [br]2D had an even higher maximum takeoff weight, while the 2E was a VIP [br]version. After production ceased in 1963, several companies offered various [br]conversions, with the most extreme being the Saunders ST27/28, that [br]basically changed the look of the whole aircraft; it was reduced to two [br]engines, the easily recognisable 'hump' over the cockpit disappeared, [br]the shape of the windows were changed, and the wingtips were squared [br]instead of rounded.[br]Country of origin: GB [br]_________________________________________________________________________________________________ [br]Engines: four 250hp Gipsy Queen 30 Mk 2 [br]_________________________________________________________________________________________________ [br]Wingspan: 21.8 m (71ft 6in) [br]_________________________________________________________________________________________________ [br]Lenght: 14.8 m (48ft 6in) [br]_________________________________________________________________________________________________ [br]Height: 4.7 m (15ft 7in) [br]_________________________________________________________________________________________________ [br]Weight loaded: 5896 m (13,000lb) [br]_________________________________________________________________________________________________ [br]Cruising speed: 297 km/h (185mph) at 2440 m (8,000ft) [br]_________________________________________________________________________________________________ [br]Service celling: 5638 m (18,500ft) [br]_________________________________________________________________________________________________ [br]Range: 1475 km (915 miles) [br]_________________________________________________________________________________________________ [br]Passengers + crew: 14-17 + 2 [br]_________________________________________________________________________________________________

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de Havilland DH.114 Heron Wallpapers @ Mega Wallpapers (08 Edition)