Thrust-vectored takeoff, landing, and ground handling of an airship

Abstract

Takeoff, landing, and ground-level maneuverability characteristics of a modern airship having twin, vectorable thrustors were analyzed using an advanced airship flight simulation. The effects of thrust tilting on tail clearance, angle of attack, and ground distance were examined for several V/STOL modes in which the airship was light, heavy, or in equilibrium. The significance of prevailing winds in such cases to improve the vehicle's performance is illustrated. Airship response to control inputs and wind disturbances in near-ground operations were simulated. In the latter case, it was found that ground plane excursions of the vehicle could be reduced by selective use of thrust application rate and operator time lag. The consequences of thrust vectoring on the overall vehicle system design and operation are discussed. The need for heading and altitude autopilots as well as a state-of-the-art wind vector monitor at the pilot station are also presented.