Power plants – Reaction motor – Plural propellants to burn sequentially
Patent
1987-05-08
1989-04-11
Casaregola, Louis J.
Power plants
Reaction motor
Plural propellants to burn sequentially
60254, F02K 906
Patent
active
048194263
ABSTRACT:
A rocket propelled vehicle includes a lower stage solid propellant rocket motor and at least one upper stage solid propellant rocket motor. Each of the rocket motors includes a case, a nozzle and a solid propellant having a central combustion chamber, with the case of the lower stage motor, in a preferred embodiment, being open at the forward end and the case of the upper stage motor being open at the aft end and forming a continuation of the open end of the lower stage case, with a layer of slow burning material cast on the surface defining the central combustion chamber of the upper stage solid propellant, and with ignition of all stages being accomplished approximately simultaneously through operation of a single ignition system. Pressurization of the lower and upper stages during burning of the lower stage propellant counteracts and substantially eliminates compressive stresses in the upper stage vessel membranes, which compressive stresses are induced by transmission of lower stage thrust to the upper stages and the payload beyond by superimposing tensile stresses therein, and additionally provides a source for the secondary discharge of gases. Such gaseous discharge may be used to create a boundary layer surrounding the skin of the vehicle for diminishing friction with the medium through which the vehicle flies, and may also be used for thrust vector control to steer the vehicle.
REFERENCES:
patent: 2724237 (1955-11-01), Hickman
patent: 2945442 (1960-07-01), Adelman et al.
patent: 3044255 (1962-07-01), Precoul
patent: 3349564 (1967-10-01), Schwartz et al.
patent: 3380251 (1968-04-01), Wall
patent: 3724217 (1973-04-01), McDonald
patent: 3826087 (1974-07-01), McDonald
patent: 4550888 (1985-11-01), Douglass et al.
Newman, R. S. "Why Not Dual Thrust Engines", Astronautics Mar. 1958 pp. 26-27.
Kerrigan Barry E.
Singer Victor
Casaregola Louis J.
Morton Thiokol Inc.
Thorpe Timothy S.
White Gerald K.
LandOfFree
Rocket propelled vehicle forward end control method and apparatu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rocket propelled vehicle forward end control method and apparatu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rocket propelled vehicle forward end control method and apparatu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-658370