Axisymmetric thrust augmenting ejector with discrete primary air

Details Axisymmetric thrust augmenting ejector with discrete primary air Axisymmetric thrust augmenting ejector with discrete primary air

1982-07-23

1984-05-15

Love, John J.

Fluid sprinkling, spraying, and diffusing

Reaction motor discharge nozzle

With addition of secondary fluid upstream of outlet

239DIG7, 417197, B64C 1500

Patent

active

044483546

ABSTRACT:
A circular thrust augmenting ejector has an annular wall which defines a central passageway and a convergent contoured inlet section, a constant area cylindrical mixing section and a divergent conical diffuser outlet section. The inlet, mixing and outlet sections merge one into the next in axisymmetric serial relationship. The ejector also has a plurality of discrete primary nozzles arranged about the periphery of the annular wall at the entrance to the inlet section thereof for injecting a primary flow of high velocity air into the inlet section and thereby entraining a secondary flow of ambient air into the central passageway of the ejector.

REFERENCES:
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patent: 3216653 (1965-11-01), LeNabour
patent: 3525474 (1970-08-01), von Ohain et al.
patent: 3694107 (1972-09-01), Stein
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patent: 4192461 (1980-03-01), Arborg
patent: 4196585 (1980-04-01), Svischev et al.
Paul M. Bevilaqua, "Lifting Surface Theory for Thrust-Augmenting Ejectors", AIAA Journal, vol. 16, No. 5, May 1978, pp. 475-581.
Theodore von Karman, "Theoretical Remarks on Thrust Augmentation", 1949, pp. 461-468.
Paul M. Bevilaqua, "Evaluation of Hypermixing for Thrust Augmenting Ejectors" J. of Aircraft, vol. 11, No. 6, Jun. 1974, pp. 348-354.
Paul M. Bevilaqua, "Analytic Description of Hypermixing and Test of an Improved Nozzle" J. of Aircraft, vol. 13, No. 1, Jan. 1, 1976, pp. 43-48.

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