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Guidance method for air net collision recovery of aircraft
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An aircraft and guidance command technology, applied in the field of aircraft control, can solve the problems of slow recovery speed, limited recovery time, unfavorable to the continuity and efficiency of recovery from collision in the air, and improve recovery operation efficiency and ensure safety. Effect
Pending Publication Date: 2022-07-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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At the same time, the recovery time in the net collision route is limited, and the recovery speed is slow, which is not conducive to the continuity and efficiency of air collision net recovery.
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Embodiment 1
[0103] The net A is stationary at (300, 40, 50) m in the navigation coordinate system, and the net A faces the negative direction of the X-axis; the aircraft is at point O (0, 0, 0), which is the starting point of the collision course. , the initial velocity v x1 (0)=12m / s, v y1 (0)=5m / s, v z1 (0)=0m / s.
[0104] Divide the collision route into 2 segments, namely the first segment OC and the second segment CA, such as Figure 5 As shown, the second section of the route is a horizontal circular trajectory with point B as the center and radius r=40m on the vertical line of the speed of net A, and the ray (the first section of the route) drawn from the point O is tangent to the second section of the route The point C is the starting point of the second flight route.
[0105] That is, the trajectory of the second flight route is represented by Equation 1:
[0106]
[0107] where x 2 , y 2 In the second segment of the route, in the navigation coordinate system, the positio...
Embodiment 2
[0138] Net A is at (250, 40, 20) m in the navigation coordinate system, and the speed of net A is v Tx (0)=4m / s, v Ty (0)=3m / s, v Tz (0)=0m / s; the aircraft is at point O(0, 0, 0), point O is the starting point of the collision course, and the initial speed is v x1 (0)=12m / s, v y1 (0)=5m / s, v z1 (0)=0m / s.
[0139] The experimental process is similar to that of Example 1, the only difference is that during the first segment of the flight path, the flight of the aircraft is controlled based on the collision angle constraint.
[0140] Among them, in the first segment of the route, the guidance command of the aircraft is expressed by Equation 4:
[0141]
[0142] Among them, a y1 and a z1 respectively represent the acceleration commands of the aircraft in the Y-axis and Z-axis directions in the navigation coordinate system in the first segment of the route; k y =-3, k z =-3, d y =-2, d z =-2;
[0143] V represents the real-time speed value of the aircraft in the firs...
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Abstract
The invention discloses a guidance method and system for air net collision recovery of an aircraft. According to the method provided by the invention, the network collision route is divided into p sections, the aircraft is controlled to execute different control instructions in the pth route and the qth route so as to realize the network collision recovery process of the aircraft, p is an integer greater than or equal to 2, and q represents at least one of 1 to p-1. The safety of the catching net structure can be guaranteed, and the recovery operation efficiency can be improved.
Description
technical field [0001] The invention relates to the technical field of aircraft control, in particular to a guidance method and system for recovering the aircraft from collision in the air. Background technique [0002] At present, the traditional recovery methods of aircraft include ground recovery methods such as net collision, line collision, parachute, roll landing and vertical landing. However, due to the limitation of recycling sites, traditional recycling methods cannot be recycled in jungles, mountains, water surfaces, etc., which greatly limits the use of aircraft. [0003] The advantage of aerial recovery is that it can expand the combat radius of the aircraft and ensure that its own side can improve its regional intervention and denial capabilities under safe conditions; breaking through the limitations of the recovery site, the entire recovery process can be completed maneuverably, which greatly facilitates the rapid completion of the cluster aircraft after the m...
Claims
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