IPD Urubu

Urubu
Role	Sailplane
National origin	Brazil
Manufacturer	Aerotec S/A Indústria Aeronáutica
Designer	IPD (Instituto de Pesquisas e Desenvolvimento)
First flight	October 1979
Number built	1

The IPD Urubu (Brazilian-Portuguese name for the Vulture) also known as the IPD/PAR PE 80367, was a two-seat sailplane of high-wing.^[1]

Design and development

In July 1978, the Ministry of Aeronautics asked IPD to develop a biplace glider to replace the LET L-13 Blaník, which was reaching the end of its service life. The work was executed by PAR (Divisão de Aeronaves) of the IPD. Development was completed in a few months and the prototype ordered from Aerotec, having been completed in 1979.^[2]

Construction

Monocoque construction, entirely made of metal, the new glider was baptized "Urubu", and underwent a series of tests that proved its efficiency in flight, being approved by the Civil Aviation Department. Biplace, in tandem-seat, had a bubble canopy, and a fixed auxiliary wheel, built into the fuselage.

Specifications

Data from Taylor 1981, p. 586

General characteristics

Crew: 1
Length: 8.96 m (29 ft 5 in)
Wingspan: 17.80 m (58 ft 5 in)
Height: 2.00 m (6 ft 7 in)
Wing area: 20.91 m² (225.1 sq ft)
Aspect ratio: 15:1
Airfoil: NACA 63₂A-615 at root, NACA 63₁A-412 at tip
Empty weight: 370 kg (816 lb)
Max takeoff weight: 550 kg (1,213 lb)

Performance

Maximum speed: 257 km/h (160 mph, 139 kn)
Stall speed: 64 km/h (40 mph, 35 kn)
Maximum glide ratio: 30:6 at 85 km/h (53 mph)
Rate of sink: 0.70 m/s (138 ft/min) at 72 km/h (45 mph)
Wing loading: 26.3 kg/m² (5.4 lb/sq ft)

Notes

^ Taylor 1981, p. 561
^ Pereira 1997, p. 328

References

Taylor, John W. R. (1981). Jane's All The World's Aircraft 1980–81. London, UK: Sampson Low, Marston & Company, Ltd.
Pereira, Roberto (1997). Enciclopédia de Aviões Brasileiros. São Paulo: Editora Globo.

[jawa65_p586-1] Taylor 1981, p. 561

[jawa65_p328-2] Pereira 1997, p. 328

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[2]