Apparatus for influencing a boundary layer on the surface of a b

Details Apparatus for influencing a boundary layer on the surface of a b Apparatus for influencing a boundary layer on the surface of a b

1987-06-05

1989-06-06

Barefoot, Galen

Aeronautics and astronautics

Aircraft structure

Details

244 53B, 244199, B64C 2306

Patent

active

048364738

ABSTRACT:
The pressure drag on the skin of an aircraft is reduced by rigidly securing boundary layer influencing members to the skin of the aircraft, including the wings, the elevantor and fin/rudder assemblies, and the body near the tail end. These members may be vortex generators and boundary layer diverters and are always located in the attached flow. In addition, if the members are placed upstream of any air intakes, especially flush air intakes, the air intake efficiency is also improved. The influencing members have an effective height above the surface corresponding, at the most, to the displacement thickness portion of the boundary layer.

REFERENCES:
patent: 2509890 (1950-05-01), Stalker
patent: 2650752 (1953-09-01), Haidley
patent: 2694357 (1954-11-01), Lee
patent: 2699906 (1955-01-01), Lee et al.
patent: 3062484 (1962-11-01), Hiniky
patent: 3578264 (1971-05-01), Kuethe
patent: 4121606 (1978-10-01), Holland et al.
patent: 4174083 (1979-11-01), Mohn
patent: 4377982 (1983-03-01), Gungover

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