Locke Lord LLP
Determining rotorcraft collective adjustment during ground test
A method for evaluating a collective alignment of rotor blades for an aircraft while the aircraft is on the ground is disclosed. The method includes determining an air density altitude, and determining a torque value for each engine of the aircraft, while the aircraft rotor blades are operated at a normal speed and the rotor blades are set to a full down position for ground operations via a collective controller. The method further includes evaluating the collective condition by comparing the torque value to a predetermined flat pitch torque alignment limit for the air density altitude, and providing an indication of the collective condition.
Simmonds Precision Products, Inc.
B B
B64F B64C
inventional inventional
David L. Howard S. Harrison H.
Green Kunselman Chin