摘要:
A highly reliable aerodynamic coefficient estimate can be computed, and computation of this aerodynamic coefficient estimate enables accurate detection of control surface failure/damage while reducing a discomfort for passengers. A deflection angle command signal generation means (5) generates a deflection angle command signal for estimating an aerodynamic coefficient indicating the aerodynamic characteristics of an airframe. A kinetic state quantity acquisition means (6) acquires a kinetic state quantity of the airframe that is obtained as a result of a control surface provided on the airframe being moved based on the deflection angle command signal. A candidate value calculation means (7) calculates candidate values for estimating the aerodynamic coefficient from the kinetic state quantity using two or more different estimations. An aerodynamic coefficient estimate determination means (8) determines an aerodynamic coefficient estimate based on the candidate values.
摘要:
The aircraft includes a fuselage and at least one aerodynamic interface surface. It further includes a gimbaled mirror system which includes a mirror supported by a gimbal to receive a light beam from a light emitting source and reflect the light beam to a first periscope fold mirror. A wave front measuring system includes at least five reflective which reflects the light beam to a fast steering mirror. The fast steering mirror reflects the light beam directly to a beam splitter wherein the light beam is split into a transmitted portion and a reflected portion of the light beam.
摘要:
The invention relates to a method for determining the aerodynamic moment of resistance M aero-EM of a wheel disposed on an axle, by measuring the value of the mechanical power P m to be applied to the wheel in order to keep the wheel rotating at a constant speed ω, said wheel being equipped with a means for rotating same and a device for obtaining and/or recording the numerical values of the mechanical power and of the rotation speed. The invention is characterised in that the wheel is protected by a removable cover, and in that the wheel is subjected to a flow of air.
摘要:
The present invention relates to a system and method for detecting an aircraft jitter. The aircraft jitter detection system comprises: a jitter detection apparatus, which detects accelerations of pitch and yaw of the aircraft; a data acquisition apparatus, which obtains accelerations in two directions detected by the jitter detection apparatus; and a jitter determination apparatus, which extracts frequency spectrum and energy information of the jitter according to the accelerations in two directions obtained by the data acquisition apparatus, and determines whether the aircraft jitters.
摘要:
A multi-hole probe has a kernel that includes a forward surface that includes at least a first, second, and third pressure sensing ports. The multi-hole probe kernel further includes an upper surface, generally orthogonal to the forward surface, and including at least a first, second, and third stem ports. Still further, the multi-hole probe kernel includes first, second, and third tubes running between and providing a fluid connection with the first, second, and third pressure sensing ports and the first, second, and third stem ports, respectively.
摘要:
L'invention concerne une sonde de mesure d'incidence locale destinée à être fixée à une paroi (11) et un procédé mettant en oeuvre la sonde. La sonde (10) comprend au moins cinq prises de pression (16, 17, 18) disposées sur un nez (15) du corps de sonde (13), des moyens de mesure de pression associés aux prises de pression (16, 17, 18) et des moyens de calcul aptes à déterminer une incidence de l'écoulement par rapport à la direction principale (14) du corps de sonde (13) en fonction des pressions mesurées par les moyens de mesure de pression. Selon l'invention, les moyens de calcul sont configurés pour choisir parmi les prises de pression (16, 17, 18) celles permettant d'obtenir la meilleure précision de mesure de l'incidence locale et pour calculer l'incidence locale par rapport à la direction principale (14) à partir des mesures de pression effectuées dans les prises de pression choisies (16, 17).
摘要:
A highly reliable aerodynamic coefficient estimate can be computed, and computation of this aerodynamic coefficient estimate enables accurate detection of control surface failure/damage while reducing a discomfort for passengers. A deflection angle command signal generation means (5) generates a deflection angle command signal for estimating an aerodynamic coefficient indicating the aerodynamic characteristics of an airframe. A kinetic state quantity acquisition means (6) acquires a kinetic state quantity of the airframe that is obtained as a result of a control surface provided on the airframe being moved based on the deflection angle command signal. A candidate value calculation means (7) calculates candidate values for estimating the aerodynamic coefficient from the kinetic state quantity using two or more different estimations. An aerodynamic coefficient estimate determination means (8) determines an aerodynamic coefficient estimate based on the candidate values.
摘要:
The present invention discloses a pressure measurement device (1000) comprising: a substrate that includes at least one pressure sensing module and at least one fluid-conductive channel, wherein each channel has a first aperture and a second aperture. The substrate is flexible such that the pressure measurement device (1000) is conformably adjustable onto an object's surface. The first aperture is located on the substrate such that when the substrate is suitably adjusted onto the object's surface, the first aperture is open to the exterior of the object's surface. The pressure sensors module is operatively connected to at least one of the second apertures, such that the at least one pressure sensing module is generally being subjected to the pressure being present at the first aperture.