Accession Number : ADD002277
Title : Ducted Rockets.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Schadow,Klause C
Report Date : 12 Jan 1976
Pagination or Media Count : 8
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.
Descriptors : *Ducted rockets, *Combustion chambers, Secondary emission, Ramjet engines, Rocket nozzles, Solid propellant rocket engines, Patents
Subject Categories : Jet and Gas Turbine Engines
Solid Propellant Rocket Engines
Distribution Statement : APPROVED FOR PUBLIC RELEASE