Wassmer WA 20 Javelot
The WA 20 Javelot (or Javelin), designed by Maurice Collard, made its first flight in August 1956, and was intended to meet the growing need of the French gliding clubs for a single-seater of good performance and uncomplicated construction to replace the now obsolescent German designs such as the Weihe and the Nord 2000 (the French-built DFS Meise) and early postwar French types such as the Arsenal Air 100 that were then in service.
The Javelot marked Wassmer's entry into sailplanes and was of conventional mixed construction, the cantilever shoulder wings being of wood with a single box spar and D-type leading edge torsion boxes; there are air brakes above and below each wing, and small endplate 'bumper'-type fairings at the wing tips. The wings are in two pieces and joined with two cylindrical pins, being rigged to the fuselage with four securing pins. The fuselage is a steel tube framework covered by fabric and is distinguished by a rather blunt nose and a flush-fitting cockpit canopy that is curved longitudinally but has flat sides and a flat curved top. There is a non-retractable monowheel with a brake aft of the rubber-sprung nose skid, and a tailskid. The tail unit is a cantilever wooden structure with a trim tab in the one-piece elevator.
Span: 52 ft 9 in
Length: 23 ft 2 in
Wing area: 166.9 sqft
Aspect ratio: 16.7
Empty weight: 430 lb
Max weight: 728 lb
Max speed: 124 mph (in smooth air)
Min sinking speed: 2.2 ft/sec at 47 mph
Best glide ratio: 29:1 at 50 mph