Totor aerodynamics in forward flight

Bramwell, A. R. S.; Done, G.T.S.; Balmford, David

doi:10.1016/b978-075065075-5/50009-9

Cited by 1 publication

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“…Of course, the propeller thrust line is not the only means of producing pitching moments. A rotor system with offset flapping hinges will produce a moment that is independent of rotor thrust, but proportional to flap angle* 16 ). Since the gyroplane rotor will be flapped back relative to the fuselage to provide the requisite axial flow for autorotative flight, appropriate choice of mast angle will result in a nose-up moment with this type of rotor system, which will be balanced by placing the thrust line aft of the centre-ofmass.…”

Section: M">0mentioning

confidence: 99%

Longitudinal stability of gyroplanes

Houston¹

1996

Aeronaut. j.

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The class of aircraft known as gyroplanes (or autogyros) helped to pave the way for the development of the helicopter. However, they have found no application in contemporary commercial or military aviation. It is in recreational or sport flying that the gyroplane has proved popular. Most if not all designs are however homebuilts, and as a consequence little analysis of any significance has been conducted on the flight mechanics of these aircraft. This Paper presents an analysis of the longitudinal stability of gyroplanes. Simple consideration of the basic forces and moments that might influence stability, in the context of elementary rotor behaviour, is used to assess the fundamental nature of gyroplane longitudinal stability. This is quantified by the application of a sophisticated generic rotorcraft mathematical model to the gyroplane problem. It is concluded that the basic configuration can be longitudinally stable with appropriate design, and that the rotorspeed degree of freedom must also be included when modelling the aircraft.

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Section: M">0mentioning

confidence: 99%

Longitudinal stability of gyroplanes

Houston¹

1996

Aeronaut. j.

View full text Add to dashboard Cite

show abstract

Totor aerodynamics in forward flight

Cited by 1 publication

References 20 publications

Longitudinal stability of gyroplanes

Longitudinal stability of gyroplanes

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