Hirtenberg HV.15

The HV.15 was the company's first twin-engined aircraft, originally made for the civilian market. Designed for mass production, the aircraft was planned to be a passenger aircraft or light transport. The HV.15 first flew on March 8, 1936, powered by the most powerful engines available to Austria at the time, a pair of Siemens-Halske Sh 14A rotary engine, each producing 160 hp (119 kW).

General characteristics

• Crew: 2
• Capacity: 4 passengers
• Length: 10.65 m (34 ft 11 in)
• Wingspan: 15 m (49 ft 3 in)
• Height: 2.9 m (9 ft 6 in)
• Wing area: 33 m² (360 sq ft)
• Empty weight: 1,550 kg (3,417 lb)
• Gross weight: 2,200 kg (4,850 lb)
• Powerplant: 2 × Siemens-Halske Sh 14A radial engine, 120 kW (160 hp) each

Performance

• Maximum speed: 235 km/h (146 mph, 127 kn)
• Cruise speed: 198 km/h (123 mph, 107 kn)
• Range: 900 km (560 mi, 490 nmi)
• Service ceiling: 5,200 m (17,100 ft)

• Nowarra, Heinz (1988). Die deutsche Luftrüstung 1933-1945, Volume 4 (in German). Bernard & Graefe. p. 43. ISBN 978-3-7637-5464-9.
• Keimel, Reinhard (2003). Luftfahrzeugbau in Österreich. Von dem Anfängen bis zur Gegenwart. Enzyklopädie (in German). Aviatic. ISBN 978-3-925505-78-2.