Helicopter tethered flight test protective device and its tethering method

Abstract

The invention provides a helicopter mooring flight testing protective device and a mooring method of the helicopter mooring flight testing protective device. The helicopter mooring flight testing protective device and the mooring method are simple, practical, convenient to operate, safe, reliable and low in cost. According to the technical scheme, the helicopter mooring flight testing protective device comprises a longitudinal protective rod, a transverse protective rod and four installation bases, the longitudinal protective rod and the transverse protective rod are two metal tubes respectively, the lengths of the longitudinal protective rod and the transverse protective rod are equal to the diameters of helicopter rotors, each the installation base is provided with a base, a compression cover and a stopping pin, the bases are provided with double U-type grooves, helicopter longitudinal sliding tubes are placed into the U-type grooves in one sides of the bases, the longitudinal protective rods are placed into the U-type grooves in the other sides of the bases, the compression covers are connected with the bases through the stopping pins, the transverse protective rods are placed into U-type grooves of the compression covers, and then the compression covers and the bases are tightly pressed through bolts.

Description

technical field [0001] The invention belongs to the helicopter flight test technology, and relates to a helicopter mooring flight test protection device and a mooring method thereof. Background technique [0002] There are certain risks in the first test flight of the newly developed helicopter, which may cause some unnecessary losses. Therefore, many types of helicopters will add protective measures during the first test flight to ensure flight safety. Some helicopters use steel wire ropes to connect to the ground at multiple mooring points on both sides of the fuselage and the tail beam to limit the flying height, attitude and position of the helicopter; Simulate the flight off the ground on the turntable to verify the working status of the various systems of the helicopter. [0003] The method of multi-point mooring on the fuselage can ensure the safety of the helicopter, but due to the relatively large restrictions on attitude and position, the requirements for flight o...

AI Technical Summary

Problems solved by technology

[0003] The method of multi-point mooring on the fuselage can ensure the safety of the helicopter, but due to the relatively large restrictions on attitude and position, the requirements for flight operation are too high, it is difficult for the helicopter to reach the state of hovering, and it cannot meet the requirements of the test flight from the ground; The turntable simulates the flight state, although some parameters of the flight state can be obtained, but because the helicopter is still fixed on the turntable, there is still a big difference between it and the actual flight state, and the turntable is generally expensive, and the use and maintenance are relatively complicated

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