IPD Urupema
Страна: Бразилия
Год: 1968

M.Hardy. Gliders & Sailplanes of the world

M.Hardy. Gliders & Sailplanes of the world

IPD Urupema

  This very sleek Brazilian high performance Standard Class single-seater was designed by a group of engineers and students at the Centra Tecnico de Aeronautica (CTA) of the Institute de Pesquisas e Desenvolvimento (IPD) under the leadership of Mr Guido Pessotti; the IPD had also worked on powered aircraft and had produced the little 8m (26ft 3in) span Periquito II single-seater sailplane which had first flown in 1957 and of which three production examples were built. Also known as the PAR-6505 from the letters PAR signifying the IPD's Departamento de Aeronaves, design work on the Urupema started in 1964 and construction of the prototype began the following year; it first flew on 20 January 1968 and took part in that year's World Gliding Championships at Leszno in Poland and in the 1970 World Championships at Marfa, Texas, where it was placed 22nd out of 40 competitors in the Standard class. After flight tests were completed, production of a batch of 20 Urupemas began in January 1971 at the works of Embraer, the major Brazilian aircraft manufacturer, under the designation EMB-400. The cantilever shoulder wings have a forward sweep of 1° 22' at the quarter-chord line and are of wood/paper honeycomb/wood sandwich construction, as are the ailerons; DFS air brakes are fitted. The wooden semi-monocoque fuselage has a nose section of plywood/plastic foam/plywood sandwich construction. The tail unit is also of wood and honeycomb paper sandwich construction like the wings, and the tailplane is a one-piece all-moving surface with automatic anti-balance tabs. There was a non-retractable BF Goodrich monowheel with brake mounted ahead of the cg on the prototype, but production aircraft have a retractable monowheel. The pilot sits in a semi-reclining seat under a long one-piece flush-fitting cockpit canopy, and optional 'extras' include a battery-operated electrical artifical horizon and a Bertea transceiver.

Span: 49 ft 2 1/2 in
Length: 24 ft 8 1/2 in
Height: 4 ft 11 1/2 in
Wing area: 129.2 sqft
Aspect ratio: 18.75
Empty weight: 507 lb
Max weight: 683 lb
Max speed: 159 mph (in smooth air)
Min sinking speed: 2.1 ft/sec at 48 mph
Best glide ratio: 36:1 at 58.5 mph
IPD Urupema.