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Propeller unmanned aerial vehicle autonomous takeoff obstacle crossing ability analysis method

A capability analysis and propeller technology, applied in the field of unmanned aerial vehicles, can solve problems such as uncertainty in use capability, loss of property and life, threat to take-off safety, etc., and achieve the effect of accurate and usable data and strong versatility

Pending Publication Date: 2022-01-07
四川腾盾科技有限公司
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AI Technical Summary

Problems solved by technology

In particular, low-speed propeller UAVs have weak take-off capabilities and are controlled by autonomous take-off logic. There are uncertainties in their ability to use them at different navigable airports, which threatens take-off safety and even causes serious property and life losses. Accurate Calculation and Analysis of Condition Suitability of General Aviation Airport

Method used

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  • Propeller unmanned aerial vehicle autonomous takeoff obstacle crossing ability analysis method
  • Propeller unmanned aerial vehicle autonomous takeoff obstacle crossing ability analysis method
  • Propeller unmanned aerial vehicle autonomous takeoff obstacle crossing ability analysis method

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Embodiment 1

[0025] refer to figure 2 As shown, the present invention discloses a method for analyzing the ability of a propeller UAV to autonomously take off and overcome obstacles, comprising the following steps:

[0026] S1. Calculate the true take-off speed from the ground based on the take-off weight of the drone:

[0027] According to the corresponding relationship between the take-off weight at sea level standard atmospheric pressure and the speed of the nose wheel, the take-off weight MASS of the drone is interpolated to obtain the speed of the nose wheel , and then according to the standard atmospheric density at sea level and airport atmospheric density Raise the front wheel to gauge the speed Convert to front wheel true speed , the true speed of the front wheel The calculation formula is:

[0028]

[0029] According to the real speed of the front wheel of the drone Calculate the ground speed with the ground speed conversion model , whose calculation formula i...

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Abstract

The invention discloses a propeller unmanned aerial vehicle autonomous takeoff obstacle crossing ability analysis method. The method comprises the following steps: S1, calculating an off-ground takeoff true speed through the takeoff weight of the unmanned aerial vehicle; s2, calculating the propeller pitch ratio according to the off-ground takeoff true speed and the engine air door opening degree, and calculating the whole aircraft equivalent tension coefficient and the propeller tension according to the propeller pitch ratio; s3, calculating lift force and resistance according to the full-aircraft equivalent tension coefficient, the propeller tension and the flap rudder output, and calculating residual thrust according to the lift force and the resistance; s4, calculating takeoff taxiing time and takeoff taxiing distance according to the lift force and the resistance, and calculating takeoff average resultant force according to the takeoff taxiing time and the takeoff taxiing distance; and S5, calculating an average climbing rate, an average climbing gradient and a climbing angle according to the lift force, the resistance and the take-off height so as to obtain the total time and the total distance required by skating and climbing.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to an analysis method for autonomous take-off and obstacle-surmounting capabilities of a propeller unmanned aerial vehicle. Background technique [0002] With the rapid development of general aviation in my country, there are more and more general-purpose airports. However, there are significant differences in the length of runways, lifting belts, and obstacles in the clear area of ​​each airport. It is necessary to analyze the applicability of aircraft with different take-off capabilities to ensure flight safety. Although China's civil aviation airworthiness regulations CCAR23 and CCAR25 have made specific regulations on the take-off performance and take-off track of propeller aircraft, and even given the name of the method, there is no clear design idea and calculation process of the method. [0003] Different from manned aircraft, the take-off process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/00
CPCB64F5/00B64U50/11B64U10/25B64U30/10B64U2201/00B64U50/13
Inventor 曲建清宁文辉竹军卫海粟
Owner 四川腾盾科技有限公司
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