Boundary layer suction type propeller adopting large and small two-stage blades

A propeller and boundary layer technology, applied in the direction of propeller, drag reduction, transportation and packaging, etc., can solve the problems of increased blade root vortex strength, increased power consumption, intake distortion, etc., to suppress root airflow separation, reduce root The effect of swirl intensity and tolerance of intake distortion
CN113443124AActive Publication Date: 2021-09-28BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2021-09-28

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Abstract

The invention discloses a boundary layer suction type propeller adopting large and small two-stage blades. The boundary layer suction type propeller is mounted at the tail part of the aircraft; a large rotor and a small rotor are arranged on the thruster, blades of the large rotor adopt low rotating speed, thrust of a main part is generated, and the requirement for the climbing performance of the aircraft is met. the blades of the small rotor rotate at a higher speed, so that the load of the root can be increased, the load of the blades of the propeller is close to an ideal load, and energy contained in downstream airflow of the propeller is weakened to the maximum extent.
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Description

technical field

[0001] The invention relates to the technical field of aircraft propellers, in particular to a boundary layer suction propeller adopting two-stage large and small blades. Background technique

[0002] Since the "Jet Age", air transportation has experienced explosive growth. Prosperous air transportation has promoted the progress of human society, but it has also brought heavy pressure on resources and the environment. The international community has clearly put forward stricter energy consumption and emission requirements, prompting people to explore energy-saving and emission-reduction technologies. A number of studies of Boeing wing-body fusion BWB aircraft, MIT-Cambridge SilentAircraft, and MIT D8 aircraft have shown that BLI may reduce power consumption by 3 to 20% on the basis of existing aircraft technology. Such energy-saving potential could mean a technological revolution for the aviation industry.

[0003] Boundary Layer Ingestion BLI (Boundary Lay...

Claims

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