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Departamento de Aeronaves / PAR Urupema
IPD / Institute de Pesquisas e Desenvolvimento Urupema
Embraer EMB-400
Neiva Urupema
This 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.
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.
The cantilever shoulder wings have a forward sweep of 1° 22' at the quarterchord 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 antibalance tabs. There was a non-retractable BF Goodrich monowheel with brake mounted ahead of the eg 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.
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.
6505 Urupema
Wingspan: 15.0 m / 49 ft 2.5 in
Length: 7.45 m / 24 ft 8.5 in
Height: 1.52 m / 4 ft 11.5 in
Wing area: 12.0 sq.m / 129.2 sqft
Aspect ratio: 18.75
Wing section: Wortmann FX-05-171/121
Empty weight: 230 kg / 507 lb
Max weight: 310 kg / 683 lb
Water ballast: None
Max wing loading 25.83 kg/sq.m / 5.29 lb/sq ft
Max speed: 159 mph / 138 kt / 255 km/h (in smooth air)
Max rough air speed: 86 kt / 160 km/h
Stalling speed: 33 kt / 61 km/h
Min sinking speed: 2.1 ft/sec / 0.66 m/sec at 48 mph / 42 kt / 78 km/h
Best glide ratio: 36:1 at 58.5 mph / 51 kt / 95 km/h
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