The SNCASE SE-700 was a three-seat passenger autogyro designed during World War II. Two were completed but only the first flew and the programme was soon abandoned.
Design of the SE-700 began in 1939 but World War II delayed its completion and first flight until 25 May 1945. Compared with most autogyros of its time it had a very advanced appearance, with a sleek, streamlined fuselage, an enclosed central engine and a three blade rotor on a straight edged, aerofoil section pylon. The enclosed cabin, which seated three, was ahead of the engine and behind a nose which tapered smoothly into the spinner of the two blade propeller.[1]
At the rear of the short fuselage was a low aspect ratiotailplane, externally braced to the fuselage underside and fitted with elevators. It carried swept, oval tail fins taken from the SNCASE SE-100 twin engine fighter at its tips, which were externally braced to the tailplane underside. The fins were fitted with rudders and, more unusually, wheels; the SE.100 had fin mounted tail wheels but the SE.700 had tricycle gear so these became the main wheels, tidily faired into the bottom of the fins. Its nosewheel retracted backwards, placing the wheel partly in the fuselage and its leg within a small ventral fairing.[1]
The first prototype, piloted by Stakenburg,[1] flew with a 164 kW (220 hp) Renault 6Q-01 six cylinder, inverted air-cooled inline engine.[2] It proved difficult to control and crashed after a few test flights. Though the damage was not great, the SE-700 was not repaired and SNCASE decided instead to complete a more refined second prototype, the SE-701 or SE-700A. This was fitted with a more powerful 246 kW (330 hp) Béarn 6D-07 engine, another six cylinder, inverted air-cooled inline. However, the company then decided that the post-war market for small commuter autogyros was too limited to proceed, so the SE-700A did not fly and a proposed production series of four SE-702s or 700Bs were not begun.[1]
Specifications (SE-700A)edit
Data fromGaillard (1990), p.33,[1] Jane's all the World's Aircraft 1947[3] Performance data estimated.
General characteristics
Crew: One
Capacity: Two passengers
Length: 6.55 m (21 ft 6 in)
Width: 4.60 m (15 ft 1 in) tailplane span plus thickness of wheel fairings
Maximum speed: 265 km/h (165 mph, 143 kn) at 2,000 m (6,562 ft)
Cruise speed: 220 km/h (140 mph, 120 kn) *Minimum forward speed: 45 km/h (28 mph; 24 kn) at sea level
Range: 660 km (410 mi, 360 nmi)
Endurance: 3 hours
Service ceiling: 4,500 m (14,800 ft)
Disk loading: 16.26 kg/m2 (3.33 lb/sq ft) at maximum weight
Referencesedit
^ abcdeGaillard, Pierre (1990). Les Avions Francais de 1944 à 1964. Paris: Éditions EPA. p. 33. ISBN2-85120-350-9.
^Bruno Parmentier. "S.N.C.A.S.E. SE-700". Retrieved 16 January 2015.
^Bridgman, Leonard, ed. (1947). Jane's all the World's Aircraft 1947. London: Sampson Low, Marston & Co. p. 137c.
December 20, 2023
sncase, three, seat, passenger, autogyro, designed, during, world, were, completed, only, first, flew, programme, soon, abandoned, 700role, three, seat, passenger, autogyronational, origin, francemanufacturer, sncasefirst, flight, 1945number, built, 2design, d. The SNCASE SE 700 was a three seat passenger autogyro designed during World War II Two were completed but only the first flew and the programme was soon abandoned SE 700Role Three seat passenger autogyroNational origin FranceManufacturer SNCASEFirst flight 25 May 1945Number built 2Design and development editDesign of the SE 700 began in 1939 but World War II delayed its completion and first flight until 25 May 1945 Compared with most autogyros of its time it had a very advanced appearance with a sleek streamlined fuselage an enclosed central engine and a three blade rotor on a straight edged aerofoil section pylon The enclosed cabin which seated three was ahead of the engine and behind a nose which tapered smoothly into the spinner of the two blade propeller 1 At the rear of the short fuselage was a low aspect ratio tailplane externally braced to the fuselage underside and fitted with elevators It carried swept oval tail fins taken from the SNCASE SE 100 twin engine fighter at its tips which were externally braced to the tailplane underside The fins were fitted with rudders and more unusually wheels the SE 100 had fin mounted tail wheels but the SE 700 had tricycle gear so these became the main wheels tidily faired into the bottom of the fins Its nosewheel retracted backwards placing the wheel partly in the fuselage and its leg within a small ventral fairing 1 The first prototype piloted by Stakenburg 1 flew with a 164 kW 220 hp Renault 6Q 01 six cylinder inverted air cooled inline engine 2 It proved difficult to control and crashed after a few test flights Though the damage was not great the SE 700 was not repaired and SNCASE decided instead to complete a more refined second prototype the SE 701 or SE 700A This was fitted with a more powerful 246 kW 330 hp Bearn 6D 07 engine another six cylinder inverted air cooled inline However the company then decided that the post war market for small commuter autogyros was too limited to proceed so the SE 700A did not fly and a proposed production series of four SE 702s or 700Bs were not begun 1 Specifications SE 700A editData from Gaillard 1990 p 33 1 Jane s all the World s Aircraft 1947 3 Performance data estimated General characteristicsCrew One Capacity Two passengers Length 6 55 m 21 ft 6 in Width 4 60 m 15 ft 1 in tailplane span plus thickness of wheel fairings Height 3 80 m 12 ft 6 in Empty weight 1 400 kg 3 086 lb Max takeoff weight 2 000 kg 4 409 lb Powerplant 1 Bearn 6D 07 6 cylinder air cooled inverted in line 250 kW 330 hp Main rotor diameter One 13 3 m 43 ft 8 in Main rotor area 123 m2 1 320 sq ft three bladed main rotor Propellers 2 bladed Ratier electrically operated constant speed airscrewPerformance Maximum speed 265 km h 165 mph 143 kn at 2 000 m 6 562 ft Cruise speed 220 km h 140 mph 120 kn Minimum forward speed 45 km h 28 mph 24 kn at sea level Range 660 km 410 mi 360 nmi Endurance 3 hours Service ceiling 4 500 m 14 800 ft Disk loading 16 26 kg m2 3 33 lb sq ft at maximum weightReferences edit a b c d e Gaillard Pierre 1990 Les Avions Francais de 1944 a 1964 Paris Editions EPA p 33 ISBN 2 85120 350 9 Bruno Parmentier S N C A S E SE 700 Retrieved 16 January 2015 Bridgman Leonard ed 1947 Jane s all the World s Aircraft 1947 London Sampson Low Marston amp Co p 137c Retrieved from https en wikipedia org w index php title SNCASE SE 700 amp oldid 1078833223, wikipedia, wiki, book, books, library,
