Space

June 27, 2012

Boeing validates performance of CST vehicle’s attitude control engine

Boeing recently demonstrated the dual-role propulsion features and performance of the Orbital Maneuvering Attitude Control engine on the service module for the company’s Crew Space Transportation-100 spacecraft.

The tests were conducted at NASA’s White Sands Test Facility, N.M., as part of the second phase of NASA’s Commercial Crew Development program.

“Boeing’s unique service-module propulsion system combines on-orbit propulsion with ascent abort capability into a single system, allowing the OMAC engine and the majority of the propellant feed and pressurization hardware to perform dual roles,” said John Mulholland, vice president and program manager, Commercial Programs. “This dual-role feature reduces the number of parts and provides operational flexibility, increasing system reliability and improving crew safety.”

The OMAC engine is a heritage hypergolic propellant engine produced by Pratt & Whitney Rocketdyne. The engine provides thrust for orbital maneuvers and de-orbit burns, giving the crew precise control of the spacecraft. It also performs critical attitude control and steering functions in the event of an aborted ascent. Because the engine has been modified to accommodate additional burn time for the CST-100 spacecraft, the test team conducted a series of demonstration firings on two development OMAC engines to ensure the integrity of the modification.

The tests used equipment previously used by the space shuttle program to test Orbiter Reaction Control System engines. The test firing of smaller propulsion engines in the near-vacuum environment at White Sands provides a more realistic simulation of on-orbit conditions. The OMAC test series included 20 engine firing sequences of varying numbers of pulses and durations to validate engine and valve performance as well as durability.

Boeing has successfully completed 46 CCDev milestones to date. The team is on schedule to complete remaining CCDev-2 milestones this summer, including service module propellant tank tests and a forward heat-shield jettison test that will provide additional data on important components of the spacecraft design.

Boeing’s CST-100 is a reusable spacecraft that will provide commercial crew transportation services to low Earth orbit, enabling the return of U.S. access to the International Space Station by 2016.




All of this week's top headlines to your email every Friday.


 
 

 

Headlines October 20, 2014

News: Navy grounds ‘Top Guns’ - The F/A-18s needs spare parts and in too many cases they’re being taken from brand new jets. This is a risk to national security and pilots’ lives.   Business: Boeing seeks revised schedule for U.S. aerial tanker - Boeing is revising its master schedule for developing the new U.S. Air Force...
 
 

News Briefs October 20, 2014

New military medical team to help with Ebola in U.S. Defense Secretary Chuck Hagel has ordered the military to prepare and train a 30-member medical support team that could provide short-term help to civilian health professionals if there are more Ebola cases in the United States. His spokesman, Rear Adm. John Kirby, says the team...
 
 

Dragon ‘fires up’ for flight

The Air Force and NATO are undergoing a cooperative development effort to upgrade the avionics and cockpit displays of AWACS aircraft belonging to the 552nd Air Control Wing at Tinker Air Force Base, Okla., and the NATO E-3 Sentrys from Geilenkirchen, Germany. The Diminishing Manufacturing Sources Replacement of Avionics for Global Operations and Navigation, otherwise...
 

 
Boeing photographs

Boeing-built X-37B successfully completes third flight

Unmanned spacecraft concludes record-setting 674-day mission   Boeing photograph A third mission of the Boeing-built X-37B Orbital Test Vehicle was completed on Oct. 17, 2014, when it landed and was recovered at Vandenberg...
 
 

Boeing concludes commercial crew space act agreement for CST-100/Atlas V

Boeing has successfully completed the final milestone of its Commercial Crew Integrated Capability Space Act Agreement with NASA. The work and testing completed under the agreement resulted in significant maturation of Boeing’s crew transportation system, including the CST-100 spacecraft and Atlas V rocket. NASA in July approved the Critical Design Review Board milestone for Boeing’...
 
 

AF to release small business research solicitations

The Air Force Small Business Innovation Research and Small Business Technology Transfer program office is set to release its fiscal year 2015 list of topics Oct. 22, on the SBIR/STTR website.  Small businesses and research institutions with expertise to address the topics’ technology challenges are encouraged to submit proposals. During 2014, the Defense Department SBIR...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>