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US 4,066,226 AGranted
Airfoil, reduced profile, "Y" flow, hybrid
OwnerKenneth Edmund Fischerinventor
Life of this patent
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Abstract
A hybrid airfoil of extremely short span and thick chord section having a large portion of the trailing edge truncated with openings in the ends or side for air to enter and openings in the rear for the airflow to exit describing a flow pattern which resembles the letter "Y" within the airfoil for the express purpose of enhancing the performance of the short span truncated airfoil.
Claims1
An airfoil having a conventional airfoil shape in longitudinal cross-section with a truncated trailing edge;
- upper and lower surfaces which provide the airfoil with a substantially rectangular planform and a closed continuous leading edge;
- each side of said arifoil has a side wall which extends from the leading edge adjacent the respective side of said airfoil to substantially the center of the trailing edge forming a substantially triangular shaped compartment in the center of the airfoil;
- the side and trailing edges of said airfoil are substantially completely open and form channels with said side walls which permit the air to flow from the sides of said airfoil between said upper and lower surfaces and exit through said open truncated trailing edge.
Dependencies are inferred from the claim text.