Vtol model aircraft

Abstract

A toy model aircraft aims to imitate V-22 Osprey with high emulation by being providing with flight characteristics of V-22 Osprey at a shrunk size of a toy specification. The model aircraft of the invention includes a fuselage, two fixed wings extended outwards from two sides of the fuselage and a tail wing at the tail of the fuselage. Each fixed wing includes a propeller engine installed at a distal end thereof and a rotor. The two rotors of the propeller engines rotating in opposite directions, and the propeller engines are coupled to form an integrated body through a rotary axle mechanism connecting to the wings. The fuselage holds a rotary axle driving means to drive the rotary axle mechanism to rotate and the propeller engines at two ends of the rotary axle mechanism are rotated concurrently between the vertical direction and horizontal direction.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a toy model aircraft and particularly to a VTOL (vertical take-off and landing) model aircraft having flight characteristics of helicopters and fixed-wing aircrafts.BACKGROUND OF THE INVENTION[0002]Helicopter flies through air buoyancy generated by spinning of rotors. By changing the climbing power and tilted direction of the pulling force of the rotors, flight conditions of the helicopter can be maintained or altered. It provides many advantages such as vertical take-off and landing and hover in the air. But its cruising speed is lower and safety is less desirable. On the other hand, a fixed-wing aircraft flies through air buoyancy generated by a pressure difference formed by fast airflow passing through the upper and lower sides of airfoils. By changing the angles of ailerons, elevators or rudder, it has higher cruising speed and safety, but requires longer take-off distance and cannot hover in the air. In 1950s and 1960...

AI Technical Summary

Benefits of technology

[0007]The present invention employs the propeller engine to replace the turbine engine of the real aircraft. Because the model aircraft has a light weight and does not need to carry people or cargos, the propeller engine can provide adequate power to meet requirements of vertical take-off and landing and cruise. The fuselage of the model aircraft also does not need to leave space for accommodating people or cargos, hence the rotary axle driving means can be directly installed in the fuselage to directly drive the rotary axle mechanism and the two propeller engines to turn concurrently between the vertical direction and horizontal direction. The rotary axle mechanism is located transversely across the fuselage and wings, and provides mechanical and synchronous rotation of the propeller engines. Compared with the real aircraft that needs to install a rotor tilt system assembly on the distal end of the wing, the present invention provides a much simplified structure without complex electrical control synchronous mechanism.

[0008]When the propeller engines of the model aircraft of the invention are in the vertical condition, the pitch of the propeller can be changed to allow the aircraft to perform vertical take-off and landing, and hover in the air. By changing the tilt direction of the rotor shaft and pitch, the aircraft can fly forwards and backwards, and crab. When the propeller engines are turned to the horizontal condition and the pitch of each propeller engine can be fixed at a selected value, cruising flight can be performed. Thus the model aircraft of the invention can function and operate like a real V22 Osprey aircraft to achieve high emulation. By incorporating the characteristics of the model aircraft, the invention simplifies the driving means of the real aircraft with a novel driving structure adapted to the size of the model aircraft at a shrunk size within 0.5 to 3 meters. Compared with the conventional model aircraft that partly imitates V22 Osprey aircraft or only imitates the profile of V22 Osprey aircraft, the present invention provides a full imitation design with substantial features and outstanding improvements.

Problems solved by technology

But its cruising speed is lower and safety is less desirable.

As V-22 Osprey tiltrotor aircraft is a novel aircraft different from the conventional helicopter or fixed-wing aircraft, to modify V-22 Osprey to a model aircraft is a great challenge.

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