The ability of airships to fly in hover is a major plus of this category of flying vehicles. However, especially for the case of autonomous flight, this feature can be exploited only recurring to a carefully designed layout of the thrusters on board. Furthermore, the thrusters need to be suitably governed by a dedicated control algorithm. This paper explores a scheme for the control in hover of a thrust-controlled airship without thrust vector control, also assessing its effectiveness in near-hover positioning problems. The control scheme proposed herein extends the capability of a stability augmentation and guidance controller for forward flight, previously introduced by the authors for a conceptually similar airship. A control action based on a system of thrust forces required for hover, and additional thrust components for stabilizing and steering the airship in slow (near-hover) navigation, is thoroughly described. The ensuing control suite is applied and tested in the present paper on the high-fidelity virtual model of a five-thruster airship, showing reasonable stability levels and navigation accuracy of the controlled system.
Autonomous Flight in Hover and Near-Hover for Thrust-Controlled Unmanned Airships
01.01.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
autonomous flight , terminal maneuver , automatic flight control , thrust vector control , navigation , point-tracking control , autonomous hover , thrust-based control , station keeping , airship , autopilot , fixed-point guidance , unmanned air vehicle (UAV) , near-hover , lighter-than-air (LTA) , stability augmentation , thrust-controlled airship
DDC: | 629 |
Autonomous Flight in Hover and Near-Hover for Thrust-Controlled Unmanned Airships
DOAJ | 2023
|Hover -- An Uncertain Flight Condition
Online Contents | 2003