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Vertical or short-distance takeoff and landing aircraft ground effect test system

A short take-off and landing, ground effect technology, applied in aerodynamic tests, machine/structural component testing, measuring devices, etc., can solve problems such as difficult to obtain models, complex interaction relationships, insufficient ground tests, etc., to achieve Low cost, easy operation and simple structure

Active Publication Date: 2012-07-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex interaction between the jet stream, the ground, and the aircraft during the hovering and transition process, it is difficult to obtain an accurate model through theoretical calculations, and the ground effect phenomenon must be studied through experimental methods. Insufficient tests, no in-depth research on the phenomenon and principle of ground effect and crash

Method used

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  • Vertical or short-distance takeoff and landing aircraft ground effect test system
  • Vertical or short-distance takeoff and landing aircraft ground effect test system
  • Vertical or short-distance takeoff and landing aircraft ground effect test system

Examples

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Embodiment Construction

[0017] The experimental system support 10 is built into a frame structure by aluminum profiles, and the force measuring balance 20 is installed on the top of the experimental system support 10 . The simulated fuselage 30 is framed by aluminum alloy profiles and installed on the bottom of the force measuring balance 20 . The lift fan simulation device 40 uses the ducted fan 41 to provide power, and uses the steering gear 42 to drive the ducted fan 41 to rotate through the connecting rod to realize the vector rotation of the thrust. -Fan8000, the servo 42 uses Futaba S3010. The thrust / lift power unit 50 uses the ducted fan 41 to provide power, and the three-stage vectoring nozzle realizes the vector rotation of the thrust, and is installed at the rear of the simulated fuselage 30 . The aircraft model 60 to be tested is cut into an aircraft shape by using a wooden board to simulate the plane layout of the aircraft, and installed on the lower part of the simulated fuselage 30 . ...

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Abstract

The invention relates to a vertical or short-distance takeoff and landing aircraft ground effect test system, belonging to the fields of aerodynamic tests and other force measurement experiments. The vertical or short-distance takeoff and landing aircraft ground effect test system is characterized by comprising an experiment system support, a force measuring scale, a simulation fuselage, a lift fan simulation device, a propulsion / lift power simulation device, a tested aircraft model and a floor, wherein the force measuring scale is installed on the top of the experiment system support, the simulation fuselage is installed on the bottom of the force measuring scale, the lift fan simulation device is installed at the front part of the simulation fuselage, the propulsion / lift power simulation device is installed at the rear part of the simulation fuselage, the tested aircraft model is installed at the lower part of the simulation fuselage, and the floor is installed at the lower part of the experiment system support. With the system, the takeoff and landing process of a vertical / short-distance takeoff and landing aircraft can be simulated, the stressing condition of the vertical / short-distance takeoff and landing aircraft is measured, and the jet stream ground effect of the vertical / short-distance takeoff and landing aircraft is researched. The system has the advantages of simple structure, low cost, easiness and convenience for operation and the like.

Description

technical field [0001] The invention relates to a ground effect test system for a vertical or short take-off and landing aircraft, which belongs to the technical field of aerodynamic tests. Background technique [0002] The gravity of vertical / short take-off and landing aircraft is mainly balanced by the lift fan and thrust vectoring nozzle during the vertical take-off and landing and hovering phases. The jet airflow produced by the lift fan and the thrust vectoring nozzle is disturbed by the ground to form a complex flow field, which will have a great impact on the force of the aircraft. The interference effect of the ground on the jet flow is affected by various factors such as the height of the aircraft from the ground, the shape of the aircraft, and the relative positions between the nozzles, which will cause a significant drop in lift and affect the stability of the aircraft. [0003] Designing an aerodynamic layout that not only conforms to the configuration of the ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06
Inventor 侯晓松朱纪洪
Owner TSINGHUA UNIV
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