Unmanned plane parachuting method

Abstract

The invention provides an unmanned plane parachuting method which comprises the steps that an unmanned plane preset landing point is selected; a recycling stage is divided into an unpowered flying stage, a gliding stage and a drifting stage; according to measured wind speed and an known plane state, the parking distance between a plane and the preset landing point, the parachute-opening moment and direction are computed quickly; the unmanned plane is controlled to enter a recycling air line; and a ground control station sends stopping and parachute-opening instructions to the plane according to the computing results and the plane state. According to the method, the best stopping and parachute-opening moment of the small unmanned plane during landing on an expected point can be computed, the used flight course and the pitch angle requirement can be computed, cost is low, and safety is high.

Description

technical field [0001] The invention relates to the technology of unmanned aerial vehicle landing and recovery, especially the technology of recovering by parachute. Background technique [0002] For UAVs that are recovered by low-altitude parachute recovery, the recovery stage is traditionally controlled by the ground operator with visual control. If you want to land at a given point, the flight operator needs to have extensive operating experience. Even so , due to the contingency of the operator's judgment, the spread of the landing points is also large, especially under the conditions of wind field disturbances and restricted recovery sites, it will be difficult to avoid damage to the aircraft due to the restrictions on the landing site (due to the UAV When landing at a certain height from the ground, the UAV system is subjected to air resistance less than its weight, and the landing has a certain speed relative to the ground, which forms a certain impact on the ground. ...

AI Technical Summary

Problems solved by technology

[0002] For UAVs that are recovered by low-altitude parachute recovery, the recovery stage is traditionally controlled by the ground operator with visual control. If you want to land at a given point, the flight operator needs to have extensive operating experience. Even so , due to the contingency of the operator's judgment, the spread of the landing points is also large, especially under the conditions of wind field disturbances and restricted recovery sites, it will be difficult to avoid damage to the aircraft due to the restrictions on the landing site (due to the UAV When landing at a certain height from the ground, the UAV system is subjected to air resistance less than its weight, and the landing has a certain speed relative to the ground, which forms a certain impact on the ground. Due to the reaction force, the UAV landing gear system receives the impact. If The ground is hard, and the force of the impact can damage the landing gear, wings, and even the fuselage