Vertical take-off and landing and fixed-wing aircrafts

Abstract

The invention provides two manned vertical take-off and landing and fixed-wing aircrafts and two unmanned remote control vertical take-off and landing and fixed-wing aircrafts. An outer edge ring wing blade type propeller is used for providing lift force, and the outer edge flat ring wing is used for cutting and adapting to rapid laminar flow, so that after high-speed airflow is cut and drained by the outer edge ring wing, strong airflow impact on the blades on the inner side of the ring wing is weakened, and unstable flight and wind resistance reduction caused by too strong shock waves are avoided; a flight driving device is adopted to provide level flight power, operation of the outer edge ring wing blade type propeller is stopped after level flight, main wings generate lift force to maintain level flight, fuel or electric power is saved, the endurance time is prolonged, the flight attitude is adjusted through wing control surfaces, and the flight control difficulty is reduced; a mixed lifting mode of vertical takeoff, gliding landing, gliding takeoff, vertical landing, short-distance gliding takeoff and the like can be realized, and the field take-off and landing adaptability is improved; after camera shooting equipment is additionally arranged, the functions of long-endurance remote patrol monitoring and hovering fixed-point monitoring can be realized.

Description

technical field [0001] The invention relates to the field of vehicles and aircrafts, in particular to two manned vertical take-off and landing and fixed-wing aircrafts and two unmanned remote control vertical take-off and landing and fixed-wing aircrafts. Background technique [0002] At present, the existing vertical take-off and landing and fixed-wing aircraft mainly include jet take-off and landing and fixed-wing aircraft such as the American-made F35 and British-made AV7, and tilt-wing aircraft such as the American-made V22 Osprey with rotor take-off and landing and fixed-wing flight. This type of aircraft adopts a vertical take-off and landing method that is not troubled by take-off and landing conditions, and adopts a fixed-wing flight method, which can provide better endurance than a helicopter that relies entirely on the rotor to provide lift. However, it will inevitably bring problems of complex structure, complicated control and high cost. [0003] In addition, su...

AI Technical Summary

Problems solved by technology

However, it will inevitably lead to the problems of complex structure, complicated control and high cost.

[0003] In addition, such as "A Hybrid Vertical Take-Off and Landing Fixed-Wing Aircraft" with the patent application number 201910394171X, this type of aircraft scheme that uses blade propellers to achieve vertical take-off and landing and uses fixed wings for level flight at the same time, compared to a simple The four-blade UAV can decompose the flight motion control into vertical take-off and landing control and flat flight acceleration and deceleration control from the control level relatively simply, so as to realize vertical take-off and landing and fixed-wing horizontal flight, but its four are used to provide vertical lift. When the blade-type propeller is flying at high speed and facing the oncoming high-speed laminar flow in the plane, the impact between the propeller wingtip and the relative airflow is likely to generate shock waves and cause wingtip tremor, so there is a problem that the airfoil is difficult to maintain and the flight is unstable

Especially in the process of high-speed level flight, in order to improve the endurance, it is necessary to stop the bladed propeller. At this time, the high-speed airflow will inevitably hit the stationary blade to generate turbulent flow, resulting in unstable flight

[0004] Because the general-blade propeller is used for vertical take-off and landing aircraft, there are natural flight obstacles during high-speed level flight. While generating lift and bearing weight, it also faces the aerodynamic interference of the incoming laminar flow. When the speed of the propeller’s wing tip is too high, the blade will vibrate, which affects safety. The airfoil is also difficult to maintain, which affects the performance and safety of the propeller, especially Generally, when the blade-type propeller tip air velocity is greater than 0.7 times the speed of sound, shock waves will appear, causing safety problems

For example, the U.S. SB-1 "Fearless" high-speed helicopter program has always had high-speed flight obstacles, and it is difficult to further increase the flight speed

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