Aerodynamic surface load sensing

Details Aerodynamic surface load sensing Aerodynamic surface load sensing

G - Physics

08

B

340/102, 73/168,

G08B 21/00 (2006.01) G05D 1/00 (2006.01)

Patent

CA 1073074

ABSTRACT OF THE DISCLOSURE The factors (including collective pitch, weight, altitude density, rotor speed and airspeed) which determine the extent to which the rotor of a helicopter may be loaded, are fed into a look-up table, and the permissible acceleration normal to the rotor is compared against actual acceleration normal to the rotor, an alarm signal resulting whenever the actual exceeds the permissive; the alarm signal may be utilized to shake the collective stick so as to simulate pre-overload vibration as a warning to the pilot. The invention disclosed herein was made in the course of or under a contract with the Department of the Army.

271673

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