Accession Number : ADD005808

Title :   Ducted Rockets.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Schadow,Klaus C

Report Date : 09 Jan 1979

Pagination or Media Count : 5

Abstract : 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 above five to ten times that of the tube diameter is considered optimum. (Author)

Descriptors :   *Patents, *Ducted rockets, Rocket exhaust, Boron, Combustion chambers, Efficiency, Rocket nozzles

Subject Categories : Rockets

Distribution Statement : APPROVED FOR PUBLIC RELEASE