초록 ▼

A flying platform, propelled by at least one ducted fan causing a vertically downwardly directed airstream in and through a cylindrical duct. A vane system in the duct has two mutually perpendicular pairs of diametrically opposite first vanes, each extending in from the duct rim toward the center of

A flying platform, propelled by at least one ducted fan causing a vertically downwardly directed airstream in and through a cylindrical duct. A vane system in the duct has two mutually perpendicular pairs of diametrically opposite first vanes, each extending in from the duct rim toward the center of the duct. Each pair of first vanes provides a pair of generally vertical walls parallel to a diametral line across the duct, and they define duct passages between the pairs of vanes and define quadrants between adjacent pairs. Each first vane has an upper, fixed, rigid portion and a variable camber flap depending therefrom. A first servomotor with linkages vary the camber of each pair of flaps, so that the camber of the flaps of each pair is at all times the same amount but in opposite directions. Preferably, there are also four second vanes, one bisecting each quadrant, and a symmetric pair of spoilers is mounted on each second vane. Each pair of spoilers is independently movable, as a pair continuously between a position substantially blocking airflow through the outer portion of said quadrant and a position permitting substantially full airflow therethrough. A second servomotor with linkages symmetrically varies the position of its spoilers. There may be a radio receiver responsive to remote control signals for actuating each servomotor and its linkages.

대표청구항 ▼

A flying platform, including in combination: at least one ducted fan comprising power means, a horizontally mounted propeller having blades and connected to and driven by said power means for causing a vertically downwardly directed airstream, and a cylindrical duct having an outer rim extending aro

A flying platform, including in combination: at least one ducted fan comprising power means, a horizontally mounted propeller having blades and connected to and driven by said power means for causing a vertically downwardly directed airstream, and a cylindrical duct having an outer rim extending around and beneath said propeller for confining said airstream, and a vane system in said duct comprising four pairs of first vanes, the vanes of each pair being parallel to each other and to a diametral line across the duct end extending in from said rim toward the center of the duct, each said pair of first vanes providing a pair of generally vertical walls defining generally rectangularly shaped duct passages and the walls of adjacent pairs defining quadrant shaped duct passages, each said first vane having an upper, fixed, rigid portion and a variable camber flap depending therefrom, and first servomotor and linkage means for varying the camber of each of said flaps, so that the camber of the flaps associated with a particular pair of said first vanes is at all times the same amount said flaps being positioned along the vertical axis of said duct so that the center of gravity of said platform lies within the limits of the upper and lower extremities of said flaps whereby said flaps may be used to provide yaw and translational forces to said platform without imparting significant pitch and roll moments about said center of gravity.