Swallow type inclined rotation rotorcraft

A tilt-rotor and Yan-type technology, applied in the field of Yan-type tilt-rotors, can solve problems such as difficult maneuvering, loss of balance of the body, and low lift efficiency, so as to reduce the space for takeoff, landing and parking, and improve lift efficiency , The effect of improving mechanical efficiency

Active Publication Date: 2008-12-03
周武双
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Problems solved by technology

But above-mentioned this existing tilt rotor aircraft still has the following deficiencies technically: the one, the engine nacelle rotor structure is heavy and complicated, and the manipulation difficulty is extremely great; It is difficult to completely equal the output power, especially in the process of vertical take-off and landing. A slight failure of one of the engines will cause the body to lose balance and cause serious consequences; the third is that th

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  • Swallow type inclined rotation rotorcraft
  • Swallow type inclined rotation rotorcraft
  • Swallow type inclined rotation rotorcraft

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Embodiment Construction

[0158] The technical solution of the present invention will be described in detail below through embodiments and in conjunction with the accompanying drawings.

[0159] In Figure 1, the front view and top view show the shape of a fixed-wing aircraft, the rotor is in a horizontal position, and the outer wing extends upwards to the limit position (10° on the leading edge); the side view shows the shape of a helicopter, and the rotor is in the In the vertical position, the outer section of the wing is folded down to the extreme position (leading edge perpendicular to the ground plane).

[0160] In the embodiment shown in Fig. 2, Fig. 3 and Fig. 4, the geometric parameters of the Yan type aerodynamic layout are:

[0161] 1. Wing geometric parameters

[0162] The relative span length L of the middle section of the wing 0 =L 0 / L=48%

[0163] Wing aspect ratio λ=L 2 / S=7.4

[0164] Wing root-to-tip ratio η = b 0 / b 1 =2.4

[0165] Outer wing leading edge sweep angle X=30° ...

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Abstract

The invention relates to a swallow-type tilt-rotor aircraft, which integrates a helicopter with a fixed-wing aircraft. With external shapes changed, three aircraft types, namely the helicopter, the fixed-wing aircraft and the tilt-rotor aircraft, can be used for flying independently. The aircraft adopts a swallow-type aerodynamic configuration and has a geometrical shape similar to a swallow among flyers. The aircraft is provided with a hydraulic staypole folding wing; an outer segment wing and a middle segment wing are in hinged connection and can be folded downwards and stretched upwards; a coaxial tilt-rotor system is arranged on a wing beam structure of the middle segment wing, forming a horizontal-type double-rotor configuration; two pairs of rotors can rotate to and fro between a vertical position and a horizontal position; when the rotors are positioned in the vertical position and the outer segment wing is folded downwards, the aircraft is a helicopter; when the rotors are positioned in the horizontal position and the outer segment wing is stretched upwards, the aircraft becomes a fixed-wing aircraft. The aircraft is provided with a combined-type engine system consisting of a plurality of engines and a common axis, thereby having reliable safety performance. The aircraft is simple in structure, good in performance and wide in practical range.

Description

Technical field [0001] The invention relates to a Yan type tilt rotor aircraft. Background technique [0002] Among the existing tilt-rotor aircraft, the American V-22 "Osprey" tilt-rotor aircraft is an example with relatively mature technology. Accompanying drawing 26 is V-22 " Osprey " tilt rotor aircraft three side view and power, transmission system structural diagram (published on " aviation knowledge " 2001 10 period). Below with reference to accompanying drawing, comment on this existing tilt rotor aircraft. [0003] The overall layout of the V-22 "Osprey" tilt-rotor aircraft is: at the wing tips similar to fixed-wing aircraft, a pair of engine nacelles with rotors are respectively installed. The rotor and nacelle can be rotated back and forth between horizontal and vertical positions. When the rotor is in a vertical position, the tiltrotor is equivalent to a horizontal twin-rotor helicopter; when the rotor is tilted forward to a horizontal position, the tiltrotor ...

Claims

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Application Information

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IPC IPC(8): B64C27/22B64C27/37B64C27/04
Inventor 周武双
Owner 周武双
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