Abstract Understanding, predicting and supressing the inadvertent aircraft oscillations caused by Aircraft/Rotorcraft Pilot Couplings (A/RPC) is a challenging problem for designers. These are potential instabilities that arise from the effort of controlling aircraft with high response actuation systems. The present paper reviews, updates and discusses desirable practices to be used during the design process for unmasking A/RPC phenomena. These practices are stemming from the European Commission project ARISTOTEL Aircraft and Rotorcraft Pilot Couplings – Tools and Techniques for Alleviation and Detection (2010–2013) and are mainly related to aerodynamic and structural modelling of the aircraft/rotorcraft, pilot modelling and A/RPC prediction criteria. The paper proposes new methodologies for precluding adverse A/RPCs events taking into account the aeroelasticity of the structure and pilot biodynamic interaction. It is demonstrated that high-frequency accelerations due to structural elasticity cause negative effects on pilot control, since they lead to involuntary body and limb-manipulator system displacements and interfere with pilot's deliberate control activity (biodynamic interaction) and, finally, worsen handling quality ratings.
Practices to identify and preclude adverse Aircraft-and-Rotorcraft-Pilot Couplings – A design perspective
Progress in Aerospace Sciences ; 76 ; 55-89
2015-05-25
35 pages
Article (Journal)
Electronic Resource
English
AFCS , automatic flight control system , A/RPCs , Aircraft-and-Rotorcraft-Pilot Couplings , BA/BT/BAT , boundary avoidance/boundary tracking/boundary avoidance tracking , BDI/BDFT , biodynamic interaction/biodynamic feedthrough , DOF , degree of freedom , FBW , fly-by-wire , FCS , flight control system , HQs , handling qualities , LTI , linear time invariant , MTE , mission task element , OLOP , open loop onset point , PAC , phase aggression criterion , PRE–PAC , prediction algorithm–phase aggression criterion , PIO/PAO , pilot induced oscillations/pilot assisted oscillations , PIOR , PIO rating , PVS , pilot-vehicle system , RLEs/PLEs , rate limiting element/position limiting element , ROVER , real-time oscillation verifier , RMS , root mean square , RSA , robust stability analysis , SAS/SCAS , stability augmentation system/stability and control augmentation system , TCL , thrust control lever , Aircraft-Pilot Couplings (APC) , Rotorcraft-Pilot Coupling (RPC) , Conceptual design , Preliminary design , Flight control system design , Pilot induced oscillations (PIO) , Pilot assisted oscillations (PAO) , Automatic flight control system (AFCS)
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