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Accession Number:
ADD002277
Title:
Ducted Rockets.
Descriptive Note:
Patent Application,
Corporate Author:
DEPARTMENT OF THE NAVY WASHINGTON D C
Report Date:
1976-01-12
Pagination or Media Count:
8.0
Abstract:
The patent application relates to a method whereby the overall efficiency of a reaction engine having primary and secondary combustion chambers is greatly improved by reducing the primary exhaust velocity to subsonic speed. This is accomplished in a preferred embodiment by using an exhaust tube downstream of the primary nozzle. A tube diameter of about six times that of the primary throat diameter and a tube length of about five to ten times that of the tube diameter is considered optimum.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE