1940 ? 2010: Brief history of hybrid helicopters around ... - Eurocopter
1940 ? 2010: Brief history of hybrid helicopters around ... - Eurocopter
1940 ? 2010: Brief history of hybrid helicopters around ... - Eurocopter
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All Rights Reserved American Helicopter Society Summer 2006 vertiflite<br />
1978-1988 RSRA: Sikorsky, USA<br />
• Research aircraft used to study different types <strong>of</strong> rotors (Rotor System Research<br />
Aircraft) and equipped with a wing and additional propulsion<br />
• S-61 five-bladed standard rotor<br />
• S-61 standard tail rotor<br />
• 13-meter-span wing<br />
• Two 1040 kW General Electric T58-GE-5 turbo-shaft engines<br />
• Two 4400 daN thrust General Electric TF34-GE-400A jet engines for the<br />
propulsion<br />
• Maiden flight <strong>of</strong> the compound version on April 10, 1978<br />
• The S-72 RSRA is one <strong>of</strong> the few compound <strong>helicopters</strong> that was not made in<br />
view <strong>of</strong> high speeds
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