Abstract Whirl flutter is an aeroelastic instability that affects aircraft with propellers/rotors. With their long and flexible rotor blades, tiltrotor are particularly susceptible. known to have destroyed in the best case it constitutes a fatigue hazard. The complexity of whirl analysis increases significantly addition nonlinearities, due more complex dynamical behaviours emerge as result. Mos...

Abstract The aerodynamic performance of propellers strongly depends on their geometry and, consequently, aeroelastic deformations. Knowledge the extent impact is crucial for overall aircraft performance. An integrated simulation environment steady propeller simulations presented. applied to determine elastic deformations module includes a blade element momentum approach calculate loads. structu...

Unmanned aerial vehicles are being utilized by numerous groups around the world for various missions. Most of the smaller vehicles that have been developed use commercially-offthe-shelf parts, and little information about the performance characteristics of the propulsion systems is available in the archival literature. In light of this, the aim of the present research was to determine the perfo...

Guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. In this study automatic landing control systems are introduced and an optimal landing control system is designed. The control system performance criteria are based on minimum control effort. The designed system is simulated for a tr...

Tip-mounted propellers can increase wing aerodynamic efficiency, and the concept is gaining appeal in context of hybrid electrical propulsion for greener aviation, as smaller lighter motors help with mitigating structural drawbacks a tip engine installation. A numerical study propeller effects on aerodynamics herein illustrated, considering different power configurations Regional Aircraft wing....

the study of flight vehicle structures reveals the importance of obtaining the most suitable accuracy compatible with construction. for this purpose, several experiments were conducted at the agard institute. in this paper the results of one such experiment performed on a sample airplane wing are presented. aircraft structural engineers use several methods to model these structures. specifing h...