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A detector and drop-in technology, which is applied in the field of drop-in wind field detectors, can solve the problems of inability to provide local area wind field information and so on.
Inactive Publication Date: 2016-09-21
NANKAI UNIV
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Or use optical remote sensing instruments to measure the upper atmospheric wind field, which has high sensitivity. NASA uses the Wind Imaging Interferometer (WINDII) to detect the atmospheric wind field within the coverage of the satellite, and the wavelengths of the detected light source spectral lines are 557.7 nm and 630.0nm green and red polar spectral lines, obtained a large amount of accurate upper atmospheric wind field information, but could not provide accurate local area detailed wind field information, for UAV missions, when from high When flying from an altitude area to a low altitude area, what is needed is the layered information of the wind field in the entire working airspace. Therefore, in order to track the change trend of the entire wind field from the high Wind field distribution, to obtain more accurate wind field data, it is expected to have a wind field detection equipment with simple device, low cost, easy detection method and high precision
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Embodiment 1
[0043] Embodiment 1: Drop-down wind field detector
[0044] Such as Figure 1-4 As shown, the drop-type wind field detector includes an umbrella system and a control system.
[0045] The parachute system includes: parachute 1, and control ropes 2 on the left and right sides for manipulating the trailing edge of the parachute. The parachute is connected with the load control box 5 through the parachute 3 and the sling 4, and a T-shaped Partition 12, control system is fixed on the T-shaped partition in the load control box of parafoil system.
[0046] In the present invention, the umbrella wing is made of coated gold silk, and the area of the umbrella wing is 5m 2 , the length of the control rope is 2.8m, made of 4-420 aramid rope, the mass of the umbrella wing, parachute and control rope is 1.5kg, the diameter of the base cavity of the load control box is 300mm, the total weight is 20kg, the diameter of the threading hole The steering gear is 22mm, the servo adopts the mode...
Embodiment 2
[0053] Example 2: Detection of the wind field in the working airspace
[0054] In order to verify the feasibility of the invented drop-type wind field detector, the research group conducted a detection experiment of the wind field in the working airspace. In this detection experiment, the paraglider is chosen to be 5m 2 The system hangs the control box for experiments.
[0055] The altitude of the launching site is 90m, the altitude of the launching location is 321m, and the height loss of the parachute opening is 40m, that is, the system starts to glide and land with the wind from the altitude of 281m. Excluding the control altitude at 20m from the ground, the height of the data acquisition interval of the wind field detector is 171m, and the flight time is 68s.
[0056] The horizontal movement trajectory of the wind field detector is as follows: Figure 5 As shown in the figure, the "*" mark in the figure indicates the starting point of the wind field detector's action. ...
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Abstract
The invention relates to a dropsonde and a detection method. The dropsonde comprises a parachute system and a control system, wherein the control system is hung in a load control box of the parachute system. A work spatial domain wind field changing with altitude heights is detected through a dropsonde mode, and transverse and vertical distribution of the changing wind filed can be tracked in real time. The parachute system comprises parachutes, operation ropes, parachute ropes, hanging belts and the load control box, wherein the load control box is used for disposing the control system and a damping foundation chamber. The real-time wind field information can be calculated through the control system, and the wind field information can be further displayed at a ground station in real time. The dropsonde is validated to accurately detect the wind field through practical detection experiments, change tendency of the wind field can be tracked in relatively short time, a mean absolute error of a detected wind direction is 3.2 DEG, a wind speed mean absolute error is 0.27m / s, and relatively high precision is realized.
Description
technical field [0001] The invention belongs to the field of unmanned aerial vehicle control, and designs a novel drop-down wind field detector. Background technique [0002] UAVs have a simple structure and low cost. They can be used not only for military purposes such as small-scale detection and reconnaissance, and delivery of emergency supplies, but also for civilian purposes such as aerial photography, spraying pesticides, and port fog removal. Due to its low speed, it is easily affected by atmospheric environmental conditions. In fact, even today, when the design of the aircraft is quite perfect, wind field disturbance is still one of the important reasons for the failure of mission execution. Therefore, before the UAV performs the mission, It is necessary to detect the changing wind field in the working airspace, plan a reasonable flight trajectory, and design a corresponding anti-wind disturbance control strategy to ensure the smooth execution of the drone mission. ...
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