The RS-68 (Rocket System-68) was a liquid-fuel rocket engine that used liquid hydrogen (LH 2) and liquid oxygen (LOX) as propellants in a gas-generator cycle. It was the largest hydrogen-fueled rocket engine ever flown.

Jun 26, 2016 · Rocketdyne’s RS-68 was the first large liquid fueled rocket engine to be developed in the U.S. in 25 years. It was designed to propel Boeing’s Delta IV evolved expendable launch …

Sep 12, 2023 · Over the life of the RS-68 program, Aerojet Rocketdyne conducted 341 hot fire engine tests at NASA Stennis, recorded a total run time of 58,672 seconds, and delivered 77 flight certified production engines to power Delta IV launch vehicles.

The bell nozzle RS-68 is a liquid hydrogen-liquid oxygen booster engine that develops 650,000 lb. of sea level thrust. The RS-68 utilizes a simplified design philosophy resulting in a drastic reduction in parts compared to current cryogenic engines.

The RS-68 is a liquid-fueled first stage rocket engine made by Aerojet Rocketdyne that uses Hydrolox (Liquid Hydrogen and Liquid Oxygen) as its propellant. The RS-68 powers the first stage of the United Launch Alliance Delta IV and Delta IV Heavy launch vehicles.

Dec 19, 2001 · built the Space Shuttle Main Engine (SSME) to a new generation using new tools and techniques.” The RS-68 is a liquid hydrogen-liquid oxygen booster engine that generates 650,000 lbs. of thrust.

The RS-68 is the first liquid propulsion system in the world to be developed from the ground up, based on Cost as the Independent Variable (CAIV). In its creation, it is the first new U.S. engine certified to fly since the Space Shuttle Main Engine over 20 years ago.

Oct 12, 1999 · This paper presents viewgraphs of the RS-68 and Linear Aerospike engines. The topics include: 1) The mission; 2) Design and Development Strategies; 3) Cost Driven Design Trades; 4) Moderate Pressure Requirements Enable Reduced Complexity; 5) Experience Based Design; 6) Development Costs Dominated by Cost of Eliminating Failure Modes; and 7 ...

This paper provides an overview of the Ares V vehicle and the RS-68B engine, an upgrade to the Pratt & Whitney Rocketdyne RS-68 engine developed for the Delta IV vehicle.

The RS-68 (Rocket System-68) was a liquid-fuel rocket engine that used liquid hydrogen (LH 2) and liquid oxygen (LOX) as propellants in a gas-generator cycle. It was the largest hydrogen-fueled rocket engine ever flown.