You're invited to attend a talk
Pennsylvania State University
"Rotorcraft Load Alleviation Control Design Using High Order Dynamic Models"
Wednesday, April 17
3 - 4 p.m.
About the Talk:
Many of the critical structural limits on rotorcraft are associated with vibratory loads and fatigue limits. These loads are strongly influenced by higher harmonic (greater than 1/rev) dynamics in the rotor systems. These dynamics are not modelled in the Linear Time Invariant (LTI) dynamic models normally used for rotorcraft primary flight control design. On the other hand, Linear Time Periodic (LTP) models are well-suited for representing vibratory loads on rotorcraft.
Recently, methods such as Harmonic Decomposition have been developed for approximating LTP systems using high order LTI models. While the use of harmonic decomposition method for HHC/AFCS design has been well-studied, the method has not yet been applied towards design of load alleviation control and cueing methods that act solely through the primarily flight controls (1st harmonic swashplate control) and AFCS.
The objective of this research is to extend the harmonic decomposition methodology to enable optimization of primary flight control laws that alleviate vibratory loads while meeting desired handling qualities. The study considers both conventional and compound rotorcraft configurations.
About the Speaker:
Umberto Saetti is a Ph.D. Candidate in Aerospace Engineering at the Pennsylvania State University, concurrently pursuing a M.S. in Electrical Engineering. He is currently a Research Assistant within the Penn State Vertical Lift Research Center of Excellence (VLRCOE) where he conducts research on rotorcraft flight controls and handling qualities.
Saetti received his M.S. in Aerospace Engineering from the Pennsylvania State University in 2016 and his B.S. in Aerospace Engineering from Politecnico di Milano, Italy in 2014. Along with his colleagues of Skyward Experimental Rocketry, a student association of Politecnico di Milano, he successfully launched the first university-designed Italian rocket on November 27, 2013.