The Ursa Major Technologies Hadley is a thrust

Kerosene Kerosene, paraffin, or lamp oil is a combustible hydrocarbon liquid which is derived from petroleum. It is widely used as a fuel in aviation as well as households. Its name derives from el, κηρός (''keros'') meaning " wax", and was reg ...

LOX Liquid oxygen—abbreviated LOx, LOX or Lox in the aerospace, submarine and gas industries—is the liquid form of molecular oxygen. It was used as the oxidizer in the first liquid-fueled rocket invented in 1926 by Robert H. Goddard, an app ...

oxidizer-rich

staged combustion cycle The staged combustion cycle (sometimes known as topping cycle, preburner cycle, or closed cycle) is a power cycle of a bipropellant rocket engine. In the staged combustion cycle, propellant flows through multiple combustion chambers, and is ...

rocket engine A rocket engine uses stored rocket propellants as the reaction mass for forming a high-speed propulsive Jet (fluid), jet of fluid, usually high-temperature gas. Rocket engines are reaction engines, producing thrust by ejecting mass rearward, i ...

. Hadley is the first engine developed by Ursa Major Technologies. It started development in 2015, and prototypes were test fired in 2018. , qualification of the engine is complete and flight-ready engines have been delivered to customers. Initial customers of the Hadley engine include

Stratolaunch Systems Stratolaunch LLC is an American aerospace company providing high-speed flight test services. It was originally formed in 2011 to develop a new air-launched space transportation system, with its corporate headquarters located in Seattle, Washi ...

, which has announced that they will use the Hadley engine on their Talon-A

hypersonic In aerodynamics, a hypersonic speed is one that exceeds 5 times the speed of sound, often stated as starting at speeds of Mach 5 and above. The precise Mach number at which a craft can be said to be flying at hypersonic speed varies, since i ...

test vehicle, and

Phantom Space Corporation Phantom Space Corporation is an American space transportation and rocket manufacturing startup based in Tucson, Arizona and founded by Jim Cantrell and Michael D'Angelo. The company is building a two-stage rocket called Daytona. As designed, t ...

, who will use it on their Daytona small-lift rocket.

ABL Space Systems ABL Space Systems is an American private company, based in El Segundo, California, undertaking launch vehicle and launch systems technology development using CNC and 3D printing and minimized launch operations. The company manufactures its co ...

initially announced they would use the Hadley engine for the upper-stage of their RS1 rocket, but have subsequently decided to use an internally-developed engine called E2.

References

External links

Ursa Major Technologies Hadley webpage
Rocket engines using kerosene propellant Rocket engines using the staged combustion cycle {{Engine-aircraft-stub