Method for adjusting thrust line of rocket-boosted unmanned aerial vehicle based on centroid test and balancing

Abstract

The invention provides a method for adjusting a thrust line of a rocket-boosted unmanned aerial vehicle based on centroid test and balancing. The method comprises the steps: establishing a measurement coordinate system; balancing the center of mass C to a plane which is vertical to the Y axis as the geometric center D of the mounting plane of a thrust seat of an unmanned aerial vehicle; installing a thrust plate with a thrust cylinder in a thrust groove of the unmanned aerial vehicle; calculating the direction and angle of rotation of a straight line which needs to bypass a point G and is parallel to the Y axis when an adjusted thrust line AB is parallel to a straight line CD, and calculating the direction and distance of translation of the thrust line AB when the intersection point G of the thrust line AB and the upper end face of the thrust plate coincides with the geometric center D of the mounting plane of the unmanned aerial vehicle thrust seat; and heightening one side of the thrust plate, thinning the other side of the thrust plate, taking a straight line which passes through the point G and is parallel to the Y axis as a rotating shaft, subjecting the thrust cylinder and the thrust plate to rotating and translation adjustment, and enabling the adjusted thrust line to pass through the mass center C of the unmanned aerial vehicle, so that adjustment of the thrust line of the unmanned aerial vehicle is completed. The method is simple in calculation and convenient to operate, reduces the repeated repair times, improves the thrust line adjustment precision, and is easy in engineering implementation.

Description

technical field [0001] The invention relates to a method for adjusting the thrust line of a rocket-assisted unmanned aerial vehicle based on center-of-mass testing and trimming, and belongs to the technical field of mechanical engineering. Background technique [0002] Compared with other launch methods such as catapult takeoff, roll takeoff, and vertical takeoff, the rocket-assisted launch method has better maneuverability, and is not limited by the location of the launch site. It can provide thrust in a short time to accelerate the UAV to take-off Speed ​​is the most common and important launch method. However, due to the high thrust of the rocket, the impact on the UAV is severe. In order to ensure the safe take-off of the UAV, before the UAV is launched, the relative position of the thrust line of the booster rocket relative to the actual center of mass of the UAV should be adjusted first to ensure that the rocket The installation should guarantee the accuracy. If the ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, and to provide a method for adjusting the thrust line of the rocket-assisted UAV based on the center of mass test and trim, which is used to solve the problem that the adjustment of the thrust line in the prior art requires multiple trims or adjustments. Repeatedly trimming the thrust seat is time-consuming and labor-intensive, too much counterweight will also affect the flight and load-carrying performance of the UAV, and the problem of low thrust line adjustment accuracy

Images