Helicopter Roll-Axis Instabilities induced by Pilot Cyclic Control: A Physical Explanation

Pavel, M.D.; Ionita, A

doi:10.13111/2066-8201.2018.10.3.12

Helicopter Roll-Axis Instabilities induced by Pilot Cyclic Control

Title

Helicopter Roll-Axis Instabilities induced by Pilot Cyclic Control: A Physical Explanation

Author

Pavel, M.D. (TU Delft Control & Simulation)
Ionita, A (National Institute of Aerospace Research “ELIE CARAFOLI” - INCAS)

Date

2018

Abstract

The main objective of this paper is to give a basic understanding of the mechanisms through which pilot cyclic inputs in lateral cyclic interacts with high-order rotor dynamics destabilizing the helicopter roll motion. The paper will use a “Newtonian formulation” representing the main forces acting on the airframe body-rotor system as the pilot applies his/her control. It will be demonstrated that pilot lateral controls applied through his/her arm (which may involve also pilot biodynamics, i.e. the dynamics of pilot neuromuscular inputs and contraction dynamics of his/her muscles) may excite much higher-order frequency rotor dynamics than thought at the present.

Subject

Helicopter
Pilot Assisted Oscillations
Rotorcraft Pilot Couplings
Lead-lag mode
Rotor dynamics

To reference this document use:

http://resolver.tudelft.nl/uuid:6e2746ff-ca72-4d72-bd6a-f3c23e99d04c

DOI

https://doi.org/10.13111/2066-8201.2018.10.3.12

ISSN

2066-8201

Source

INCAS Bulletin, 10 (3), 139-156

Event

6th CEAS Air and Space Conference, 2017-10-16 → 2017-10-20, Palace of the Parliament, Bucharest, Romania