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US 5,327,721 AGranted
Ejector ramjet
AssigneeAerojet-General Corporation
InventorMelvin J. Bulman
Life of this patent
Estimating the term…
Abstract
An improved ejector ramjet includes a nozzle and propulsion duct. The nozzle has first and second sides, which are preferably two-dimensional, and produces a primary fluid jet which causes secondary fluid to be entrained in the propulsion duct. The primary jet is oscillated providing energy exchange between the primary and secondary fluids in the propulsion duct in a substantially non-viscous fashion.
Claims10
An ejector ramjet comprising:
- a propulsion duct having an upstream portion and a downstream portion;
- a nozzle being positioned within said propulsion duct for generating a primary fluid jet which induces a secondary fluid to flow from said upstream portion toward said downstream portion of said duct;
- and
- first and second fluid injectors associated with said nozzle for alternately changing the angular direction of said primary fluid jet from first to second directions at a determined oscillation frequency.
1 more element
An ejector ramjet comprising:
- a propulsion duct having first and second wall portions;
- a nozzle having first and second side portions, said nozzle being positioned in said propulsion duct and configured to generate a primary fluid jet and an entrained secondary fluid;
- and
- means for oscillating said primary fluid jet between said first and second side portions of said nozzle to direct the primary jet and entrained secondary fluid to said first and second wall portions in alternating manner.
1 more element
Dependencies are inferred from the claim text.