Title:
DOUBLE-BLADE TANDEM HELICOPTER
Document Type and Number:
WIPO Patent Application WO/2017/000156
Kind Code:
A1
Abstract:
A double-blade tandem helicopter comprises a helicopter body (10), a power system, a control system, and two groups of rotors (30, 50). The two groups of rotors are vertically disposed relative to the helicopter body. Each group of rotors comprise rotor shafts (31, 51), rotor heads (33, 53), and two blades (35, 37, 55, 57). The rotor shafts are linked to the power system, the rotor heads are fixed to the rotor shafts, and the blades are connected to the rotor heads in an attached manner. The double-blade tandem helicopter has a body weight approaching to that of a single-rotor helicopter, has a larger blade disk area, can obtain a takeoff weight approaching two or more times of that of the single-rotor helicopter, and has the characteristics of being small in conveying volume, simple in structure, high in pneumatic efficiency, and the like.
Inventors:
YANG FAN (CN)
Application Number:
PCT/CN2015/082752
Publication Date:
January 05, 2017
Filing Date:
June 30, 2015
Export Citation:
Assignee:
X-CONTROL SYSTEM CO LTD (CN)
International Classes:
B64C27/08; A63H27/133
Foreign References:
| CN201120164Y | 2008-09-24 | |||
| CN2317173Y | 1999-05-05 | |||
| CN201208514Y | 2009-03-18 | |||
| CN2513643Y | 2002-10-02 | |||
| CN103144767A | 2013-06-12 | |||
| US3905565A | 1975-09-16 | |||
| US7334755B2 | 2008-02-26 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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