An aircraft emergency descent method includes setting a pre-set maximum collective blade pitch and a pre-set altitude as part of a failure procedure; monitoring rotor assemblies through an aircraft control system and a failure detection module; determining when a rotor assembly has failed; and activating the failure procedure. The failure procedure includes commanding a maximum torque to a motor of each rotor assembly such that the rotational velocity of functioning rotors increases; detecting the increase in rotational velocity; adjusting either motor torque or a collective blade pitch to regulate rotational velocity; monitoring altitude of the aircraft; and upon determining when the aircraft reaches the pre-set altitude, adjusting the collective blade pitch to the pre-set maximum collective blade pitch via the at least one governor such that momentum is conserved, causing a descent rate of the aircraft to decrease as the aircraft approaches a ground surface.
Aircraft Emergency Descent System and Method
2024-10-24
Patent
Electronic Resource
English
METHOD AND SYSTEM TO CONTROL EMERGENCY DESCENT OF AIRCRAFT
European Patent Office | 2016
|Method and system to control emergency descent of aircraft
European Patent Office | 2018
|System and method for performing an aircraft automatic emergency descent
European Patent Office | 2015
|NTIS | 1975
|NTRS | 1977
|