Reaction Motors Inc. was an early American maker of liquid-fueled rocket engines, located in New Jersey

New Jersey

New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

. RMI engines with 6000 lbf (26.7 kN) thrust powered the Bell X-1

Bell X-1

The Bell X-1, originally designated XS-1, was a joint NACA-U.S. Army/US Air Force supersonic research project built by Bell Aircraft. Conceived in 1944 and designed and built over 1945, it eventually reached nearly 1,000 mph in 1948...

 rocket aircraft that first broke the sound barrier in 1947, and later successors including the X-1A, X1E, and the D558-2 Douglas Skyrocket

Douglas Skyrocket

The Douglas D-558-2 Skyrocket was a rocket and jet-powered supersonic research aircraft built by the Douglas Aircraft Company for the United States Navy...

. A 20000 lbf (89 kN) thrust RMI engine also powered the Viking research rocket, the first large liquid-fueled US high-altitude rocket. RMI was merged with Thiokol

Thiokol

Thiokol is a U.S. corporation concerned initially with rubber and related chemicals, and later with rocket and missile propulsion systems...

 in 1958, where it produced the XLR-99 engine that powered the X-15 rocket aircraft.

Products

• Reaction Motors XLR11
• Reaction Motors XLR10 - used on Viking (rocket)
• Reaction Motors XLR-99
  Reaction Motors XLR-99
  The XLR99 engine was the first large, throttleable, restartable liquid propellant rocket engine. It was developed beginning in the 1950s by the Reaction Motors Division of Thiokol Chemical Company to power the X-15 research aircraft. It could deliver up to 57,000 pounds force of thrust with an Isp...