|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||60/204 ; 60/207 ; 60/208 ; 60/216|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 7 인용 특허 : 1|
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.
The method of improving efficiency of rocket engines having a primary and a secondary combustion chamber including the step of: burning a solid propellant in a primary chamber to produce combustion products; placing a nozzle at the open end of the primary chamber through which the combustion products of the primary chamber must flow; maintaining a supersonic flow of the combustion products through the nozzle; slowing the supersonic flow to subsonic after it has passed through the nozzle, but prior to its entrance in the secondary chamber; restricting the...