Patent ID: 6644112
Filing Date: 2003-11-11
Classification: B64D,G01P

Abstract:
An air data measuring device for measuring flight conditions for a flight vehicle comprising:a probe carrier arranged on a structural part of the flight vehicle, said probe carrier being rotationally symmetrical at least at a transition boundary with the flight vehicle, rotatable about its longitudinal axis relative to the structural part by means of a bearing, and having its mass balanced about its longitudinal axis; a measuring sensor for measuring an angle of rotation of the probe carrier; a probe mounted on the probe carrier; at least two strakes arranged on the probe symmetrically with respect to plane of symmetry of the probe, whereby an angle of yaw of the probe is minimized at every oncoming flow condition; and at least three pressure measuring bores with differential pressure sensors assigned to them for detection of differential and absolute pressures on the probe surface; wherein a first pressure measuring bore is situated at the center or at a first radial distance from the center of the probe; a second pressure measuring bore is situated at a second radial distance from the center of the probe, which second radial distance is greater than the first radial distance; a radial distance of the third bore from the center of the probe is identical to or larger than the second radial distance; one of the pressure measuring bores is situated in a plane of symmetry of the probe; and the other two pressure measuring bores are mutually asymmetrical with respect to the plane of symmetry, for determining by means of calibrating functions the air data of an undisturbed flow, and for examining the alignment of the probe.