Tail vibration pitching dynamic derivative experimental measurement device
A measuring device and technology of dynamic derivatives, applied in the field of aerodynamic experiments, can solve problems such as small internal space and inability to meet experimental requirements, and achieve the effects of small size, strong applicability and practicability, and good development prospects
Active Publication Date: 2017-05-31
AVIC SHENYANG AERODYNAMICS RES INST
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Problems solved by technology
The existing measuring device for pitching dynamic derivative experiment has a pole that does not move, and the balance vibrates sinusoidally around the center of the aircraft. Due to the small internal space of the slender aircraft, the existing dynamic derivative device cannot meet the experimental requirements.
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[0027] An experimental measuring device for pitching dynamic derivative of tail vibration is provided, the measuring device comprises a motor (1), a reducer (2), a housing (3), a spring (5), a transmission frame (6), a hollow taper sleeve (7 ), balance pole (8), five-component balance (9), slide block (4), arc slide rail (10) and eccentric wheel (11);
[0028] The motor (1), reducer (2), drive frame (6), hollow taper sleeve (7), slide block (4) and curved slide rail (10) are all arranged in the housing (3), and the motor (1 ) is dynamically connected with the reducer (2); the eccentric wheel (12) is connected to the output shaft of the reducer (2), and is supported by a bearing; the eccentric wheel (12) includes a cylinder and an eccentric column, and one end of the cylinder is connected to the reducer The output shaft of the device (2) is connected, and the eccentric column is arranged on the periphery of the other end, and as the column rotates, the eccentric column moves in...
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The invention relates to a tail vibration pitching dynamic derivative experimental measurement device. A motor is connected with a speed reducer, and the speed reducer is connected with a support through a flange plate; an eccentric gear is connected to the front end of the speed reducer and slides in a slide groove of a transmission frame, the transmission frame is connected with a slider through arc slide rails, and the slider is connected with the support; the rear end of a balance supporting rod is connected with the transmission frame through cone fit; two ends of a spring angle balance is connected with the transmission frame and the support respectively. The tail vibration pitching dynamic derivative experimental measurement device has advantages that by design of a special vibration mechanism, the spring angle balance and a five-component balance, pitching direct derivatives, yaw direct derivatives and induced cross derivatives of an aircraft can be measured to meet wind tunnel experiment requirements.
Description
technical field [0001] The invention relates to a tail vibration pitch dynamic derivative experiment measuring device, capable of measuring the pitch direct derivative, yaw direct derivative and induced cross derivative of an aircraft, and belongs to the technical field of aviation aerodynamic experiments. Background technique [0002] The dynamic stability derivative is referred to as the dynamic derivative, which is the six aerodynamic coefficients of the aircraft (that is, the three force and three moment coefficients in the three-dimensional rectangular coordinate system) to the time change rate of the aircraft attitude parameters (p, q, r, α, β, dV / dt) derivative. Dynamic derivative is an indispensable original aerodynamic parameter in aircraft guidance system, control system and dynamic quality analysis. Especially for space shuttles, spaceships, and military fighter jets with advanced performance, they all fly at high angles of attack, and usually there will be air ...
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IPC IPC(8): G01M9/06
CPCG01M9/062
Inventor 徐明潘金柱才义张杰李王斌徐志福
Owner AVIC SHENYANG AERODYNAMICS RES INST