Aircraft/Rotors

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Sikorsky R-4, first to be mass-produced in US, Air Force Museumby VFS Publications
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Sikorsky R-4, the first production model Sikorsky helicopterby VFS Publications
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Igor Sikorsky, 1940 flting the VS-300A.by VFS Publications
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Sikorsky VS-300 main rotor - 3 control rotors (single blade)by VFS Publications
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Sikorsky VS-300 tie-down flight, 1939by VFS Publications
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Sikorsky VS-300 early flight tests, 1940by VFS Publications
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Sikorsky S-70 UTTASby VFS Publications
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Sikorsky UTTASby VFS Publications
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Sikorsky UTTASby VFS Publications
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Sikorsky UTTASby VFS Publications
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Charles M. Seibel, Chief Helicopter Engineer for Cessna Aircraft Company Military Divisionby VFS Publications
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Cessna Aircraft Company - Industrial Products Division, Hutchinson, Kansasby VFS Publications
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FAA officially approved Cessna Aircraft Company's rotary-wing flight training this week (May 1962).by VFS Publications
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Capt James E. Bowman, USAAB Ft. Rucker, 30,355 ft. (new world record), Army 4H41 Cessna (12-31-1957)by VFS Publications
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Kenneth W. Whisler, Cessnaby VFS Publications
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L to R: John C. Maurer, Jr., Jack L. Zook, Frank Martin. Cessnaby VFS Publications
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1963 Cessna 310Hby VFS Publications
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Cessna YH-41 drive system and engineby VFS Publications
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Cessna YH-41 main transmissionby VFS Publications
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Cessna YH-41 tail rotor gear boxby VFS Publications
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Cessna YH-41 lifting rotorby VFS Publications
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Cessna YH-41 lifting rotor control system schematicby VFS Publications
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Cessna YH-41by VFS Publications
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Cessna YH-41 interiorby VFS Publications
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Cessna YH-41by VFS Publications
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