US 11,732,677 B2
Ring-shaped booster rocket
Ryan Starkey, Tucson, AZ (US); Dario N. Altamirano, Tuscon, AZ (US); and John Meschberger, Sahuarita, AZ (US)
Assigned to Raytheon Company, Waltham, MA (US)
Filed by Raytheon Company, Waltham, MA (US)
Filed on Feb. 22, 2021, as Appl. No. 17/181,162.
Prior Publication US 2022/0268240 A1, Aug. 25, 2022
Int. Cl. F02K 9/97 (2006.01); F02K 9/76 (2006.01); F02K 9/32 (2006.01); F02K 9/08 (2006.01); F02K 9/34 (2006.01); B64G 1/40 (2006.01); F02K 9/88 (2006.01)
CPC F02K 9/97 (2013.01) [B64G 1/403 (2013.01); F02K 9/08 (2013.01); F02K 9/32 (2013.01); F02K 9/34 (2013.01); F02K 9/763 (2013.01); F02K 9/88 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A booster rocket comprising:
an annular casing defining an annular space therewithin, and having a central opening, wherein the annular casing includes an inner part and an outer part, wherein the inner part includes an annular slot extending along an outer surface of the inner part;
a solid rocket fuel in the annular space; and
one or more nozzle pieces mechanically coupled to the annular casing, defining one or more nozzles at an aft end of the annular casing;
wherein the one or more nozzle pieces includes an annular nozzle piece that defines an annular nozzle between the annular nozzle piece and the annular slot;
wherein the booster rocket is a capable of being placed around and installed around a separate object;
wherein the annular nozzle piece has an inwardly sloped section that directs flow inwardly as the flow approaches the annular nozzle; and
wherein the annular casing includes an inwardly-angled aft section aft of the annular nozzle.