| 摘要 |
This invention relates to an apparatus for simultaneously measuring the angle of incidence, the angle of sideslip, distance covered along a flight path and air speed of an aircraft which comprises a body, a rotatable nose portion mounted on the body and having propeller blades thereon, a tail assembly mounted on the body, a support for connection to an associated aircraft, a Cardan joint mounted in the body in the center of gravity of the apparatus and connecting the body to said support, electrical means adjacent to the Cardan joint for measuring angles of rotation between the support and the body in two orthogonal directions, said electrical means including an element mounted on said support and an element mounted on said body, photoelectric measuring means in the body for measuring the number of revolutions of the nose portion, and means for converting the number of revolutions to determine the flight distance and the air speed from the rotational speed of the nose portion and the pitch of the propeller blades, and to count the revolutions of the nose portion within one unit of time.
|
