20140138476 | METHOD AND MEANS TO CONTROL THE POSITION AND ATTITUDE OF AN AIRBORNE VEHICLE AT VERY LOW VELOCITY - A vehicle equipped with two or more propulsion units, each, for example, consisting of engine with propeller, with their thrust principally directed vertically along a z-axis, such vehicle characterized by that each propulsion unit can be controlled by rotation around two axes mainly perpendicular to the z-axis and that the propulsion units are positioned some distance apart in the z-direction enabling such control of the attitude of the propulsion units to obtain:
| 05-22-2014 |