HELICOPTER WITH CROSS-FLOW FAN
First Claim
1. A helicopter comprisinga fuselage, at least one driving unit, a roll axis,at least one main rotor mounted to said fuselage and drivable by said at least one engine about a yaw axis perpendicular to said roll axis, andat least one housing mounted to said fuselage, said at least one housing extending essentially in direction of said roll axis with an offset relative to said yaw axis,whereinan air inlet for incoming air and an air outlet for outgoing air are provided along at least a part of a circumference of the at least one housing, said air inlet and said air outlet being formed by angularly offset and separate gaps between an inside segment and an outside segment essentially extending respectively in direction of said roll axis,at least one rotatable compressor with a plurality of airfoil blades is provided radial inside said at least one housing between said air inlet and said air outlet, said at least one rotatable compressor being drivable by said at least one driving unit about a fan axis, andeach chord of said airfoil blades is essentially radial oriented with regard to said fan axiswhereinsaid at least one rotatable compressor and said at least one housing are configured to produce in operation of said at least one rotatable compressor:
- lift oriented in the region of the air inlet into a direction opposite to a flow direction of the incoming air due to ingestion of said incoming air into said compressor, andlateral thrust oriented in the region of the air outlet into a direction opposite to a flow direction of the outgoing air for anti-torque.
1 Assignment
0 Petitions
Accused Products
Abstract
A helicopter with a fuselage (4), at least one engine, a roll axis, at least one main rotor, and at least one housing (2) mounted to said fuselage (4). An air inlet (8) and an air outlet (7) are provided along at least a part of a circumference of the at least one housing (2), said air inlet (8) and said air outlet (7) being formed by angularly offset and separate gaps between an inside segment (33) and an outside segment (34) essentially extending respectively longitudinally in direction of said roll axis. At least one rotatable compressor (1) with a plurality of airfoil blades (6) is provided radial inside said at least one housing (2) between said air inlet (8) and said air outlet (7), said at least one rotatable compressor (1) being drivable by said at least one engine about a fan axis (5) and each chord of said airfoil blades (6) is essentially radial oriented with regard to said fan axis (5).
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Citations
13 Claims
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1. A helicopter comprising
a fuselage, at least one driving unit, a roll axis, at least one main rotor mounted to said fuselage and drivable by said at least one engine about a yaw axis perpendicular to said roll axis, and at least one housing mounted to said fuselage, said at least one housing extending essentially in direction of said roll axis with an offset relative to said yaw axis, wherein an air inlet for incoming air and an air outlet for outgoing air are provided along at least a part of a circumference of the at least one housing, said air inlet and said air outlet being formed by angularly offset and separate gaps between an inside segment and an outside segment essentially extending respectively in direction of said roll axis, at least one rotatable compressor with a plurality of airfoil blades is provided radial inside said at least one housing between said air inlet and said air outlet, said at least one rotatable compressor being drivable by said at least one driving unit about a fan axis, and each chord of said airfoil blades is essentially radial oriented with regard to said fan axis wherein said at least one rotatable compressor and said at least one housing are configured to produce in operation of said at least one rotatable compressor: -
lift oriented in the region of the air inlet into a direction opposite to a flow direction of the incoming air due to ingestion of said incoming air into said compressor, and lateral thrust oriented in the region of the air outlet into a direction opposite to a flow direction of the outgoing air for anti-torque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification