Abstract: This paper investigates the optimal landing trajectory and control procedure when a helicopter undergoes autorotation due to tail rotor drive failure (TRDF), in which an optimal control ...

Abstract: This paper addresses the issue of safe flight following helicopter engine failure and proposes a phased prediction method for the pilot’s manipulation strategy during autorotation landing, ...

Huge props to these two helicopter test pilots, who have white-knuckled it through one of the most harrowing experiences in rotorcraft flight – an unpowered autorotation emergency landing – allowing ...

Helicopters employ autorotation, a clever technique that harnesses rotor blades and air resistance, allowing them to descend gracefully when their engine fails, rather than crashing like a brick. When ...

The NTSB attributed this accident to the pilot’s improper landing flare during a full-down autorotation. A lower-than-normal rotor rpm, faster-than-normal ground run speed, and the subsequent loss of ...

An instructor inadvertently moved the throttle lever from idle aft toward the 'off' position, which resulted in a total loss of engine power. The instructor took the controls, conducted a power-off ...

The first automated autorotation landing by rotorcraft was achieved by Skyrise (USA) in El Segundo, California, USA, on 7 November 2023 Skyryse's proprietary technology is a highly automated flight ...