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The Macchi M.C. 72 was an experimental seaplane designed and built by the Italian aircraft company Macchi Aeronautica. In 1933 and 1934 it set a wo...
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The Macchi M.C. 72 was an experimental seaplane designed and built by the Italian aircraft company Macchi Aeronautica. In 1933 and 1934 it set a world record for speed over water.
For two years the plane suffered from many mechanical defects as well as the loss of two test pilots who died trying to coax world class speed out of the M.C. 72 (first Monti and then Bellini). The final design of M.C. 72 used a double, counter-rotating fixed-pitch propeller powered by a modified Fiat AS-6 engine generating some 2,500 to 3,100 horse power (thanks to supercharging).
After 35 flights, the engines were overhauled in preparation for a record attempt. The aircraft finally lived up to expectations when it set a new world speed record (over water) on 10 April 1933 with a speed of 682 km/h (424 mph). It was piloted by Warrant Officer Francesco Agello (the last qualified test pilot). Not satisfied, development continued as the aircraft's designers thought they could break 700 km/h with the M.C. 72. This feat was in fact achieved on 23 October 1934 when Agello piloted the plane for an average speed of 709 km/h over three passes (440 mph). This record remains (as of 2006) the fastest speed ever attained by a piston engine seaplane. After this success, the M.C.72 was never flown again.
The M.C.72 held the world speed record for all aircraft for five years. For comparison, the record holder for a land-based aircraft was held (for a time) by the Hughes H-1 Racer with a top speed of only 566 km/h (352 mph). Then in 1939 two German racing aircraft passed the M.C.72. The first was a Heinkel He 100 which reached the speed of 746 km/h (464 mph). The second racer was a Messerschmitt Me 209 which set the new world speed record of 756 km/h (470 mph) in August - just days before the start of World War II. The current world speed record for a piston-engine aircraft is 850 km/h (528 mph) set by a heavily modified American F8F Bearcat named Rare Bear in 1989.
One M.C.72 is a surviving airframe, and is on display at the Vigna di Valle Aircraft Museum, near Rome.
General characteristics
Crew: 1 pilot
Length: 8.32 m (27 ft 3.5 in)
Wingspan: 9.48 m (31 ft 1.25 in)
Wing area: 15 m² (151.46 ft²)
Empty weight: 2,505 kg (5,512 lb)
Loaded weight: 2,907 kg (6,409 lb)
Max takeoff weight: 3,031 kg (6,669 lb)
Powerplant: 1× Fiat AS-6 Liquid-cooled V24 engine, 2,126 kW (2,850 hp)
Performance
Maximum speed: 709.209 km/h (382.9 knots, 440.681 mph)
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atmosphere0727 favorited a video
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The de Havilland DH 82 Tiger Moth was a 1930s biplane designed by de Havilland and operated by the Royal Air Force and others as a primary trainer....
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The de Havilland DH 82 Tiger Moth was a 1930s biplane designed by de Havilland and operated by the Royal Air Force and others as a primary trainer. The Tiger Moth remained in service with the RAF until 1952 when many of the surplus aircraft entered civil operation. Many other nations used the Tiger Moth both in military and civil applications and the ubiquitous little trainer still is in great demand worldwide as a recreational aircraft.
Design and development
The Tiger Moth trainer prototype was derived from the de Havilland Gipsy Moth (DH 60). The main change to the DH Moth series was necessitated by an effort to improve access to the front cockpit since the training requirement specified that the front seat occupant had to be able to escape easily, even wearing a parachute. Access to the front cockpit of the Moth predecessors was restricted by the proximity of the aircraft's fuel tank directly above the front cockpit and the rear support struts for the upper wing. The solution adopted was to shift the upper wing forward but sweep the wings back to maintain the centre of lift. Other changes included a strengthened structure, fold-down doors on both sides of the cockpit and a revised exhaust. It was powered by a de Havilland Gipsy III 120 hp engine and first flew on 26 October 1931 with de Havilland Chief Test Pilot Hubert Broad at the controls.[4] One distinctive characteristic of the Tiger Moth design is its differential aileron control setup. The ailerons (on the lower wing only) on a Tiger Moth barely travel down at all on the wing on the outside of the turn, while the aileron on the inside travels a large amount upwards... this is one of the ways the problem of adverse yaw can be counteracted in an aircraft's control design.
From the outset, the Tiger Moth proved to be an ideal trainer, simple and cheap to own and maintain, although control movements required a positive and sure hand as there was a slowness to control inputs. Some instructors preferred these flight characteristics because of the effect of "weeding" out the inept student pilot
General characteristics
Crew: 2, student & instructor
Length: 23 ft 11 in (7.34 m)
Wingspan: 29 ft 4 in (8.94 m)
Height: 8 ft 9 in (2.68 m)
Wing area: 239 ft² (22.2 m²)
Empty weight: 1,115 lb (506 kg)
Loaded weight: 1,825 lb (828 kg)
Powerplant: 1× de Havilland Gipsy Major I inverted 4-cylinder inline , 130 hp (100 kW)
Performance
Maximum speed: 109 mph at 1,000 ft (175 km/h at 300 m)
Range: 302 miles (486 km)
Service ceiling: 13,600 ft (4,145 m)
Rate of climb: 673 ft/min (205 m/min)
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atmosphere0727 favorited a video
(1 month ago)
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この度はチャンネル登録を戴きましてありがとうございました（嬉
これからも宜しくお願い致します(^^ v