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