Measuring the 3-D wind vector with a weight-shift microlight aircraft

The `tumble’ departure mode in weightshift-controlled microlight aircraft

The cost of private or recreational ̄ying is high for most conventional aircraft types. During the last 25 years, however, an alternative has become available in the form of the microlight aircraft. It has a relatively low cost of ownership and has opened up ̄ying to a greater audience. However, there have been a number of accidents, usually fatal, to this class of aircraft, which could not be ...

Minimum-Time Roll Around the Velocity-Vector Maneuver of Aircraft

In this paper, some results are provided for minimum time roll about velocity vector maneuvering with thrust-vectoring and aerodynamic control in effect. The mathematical model for attitude motions of the aircraft is developed. First order necessary conditions for optimality using Pontryagen principle is applied, and the existence of an extreme family of solutions for the maneuver is shown. Mul...

Minimum-Time Roll Around the Velocity-Vector Maneuver of Aircraft

In this paper, some results are provided for minimum time roll about velocity vector maneuvering with thrust-vectoring and aerodynamic control in effect. The mathematical model for attitude motions of the aircraft is developed. First order necessary conditions for optimality using Pontryagen principle is applied, and the existence of an extreme family of solutions for the maneuver is shown. Mul...

Designing and Modeling a Control System for Aircraft in the Presence of Wind Disturbance (TECHNICAL NOTE)

This paper proposes a switching adaptive control for trajectory tracking of unmanned aircraft systems. The switching adaptive control method is designed to overcome the wind disturbance and achieve a proper tracking performance for control systems. In the suggested system, the wind disturbance is regarded as a finite set of uncertainties; a controller is designed for each uncertainty, and a per...

Retrieving High Resolution 3-D Wind Vector Fields from Operational Radar Networks