Patent ID: 7070145
Filing Date: 2006-07-04
Classification: B64C

Abstract:
1. A method comprising: (a) providing a lift unit including a propulsion subsystem and a tailboom; (b) providing a payload unit pivotally coupled to the lift unit such that the tailboom and payload unit are free to independently pivot with respect to each other about a first axis; (c) operating the lift unit in a first mode wherein its propulsion subsystem provides an aerial motive force predominantly countering gravity; (d) during at least a portion of the first mode, latching the tailboom to the payload unit in a substantially vertical orientation; (e) transitioning the lift unit to a second mode wherein its propulsion subsystem provides an aerial motive force predominantly parallel to the ground; and (f) during at least a portion of the second mode, releasing the tailboom from the payload unit, thereby allowing it to pivot independently of the payload unit.