RSS
Home
Business and Finance
Business News
Military sees increase in wounded in Afghanistan- Far from winding down, the numbers of wounded U.S. soldiers coming home have continued to swell. The problem is especially acute among those who fought in Afghanistan, where nearly four times as many troops were injured in October as a year ago.
Who knew of Fort Hood suspect's radical contacts?- The mystery over whether the military knew Fort Hood shooting suspect Nidal Hasan was communicating with a radical Muslim imam lapsed into finger-pointing ahead of congressional investigations looking into the Army psychiatrist's contacts with any extremists.
Defiant DC sniper mastermind Muhammad executed- John Allen Muhammad stepped foot into Virginia's death chamber and within seconds was lying on a gurney, tapping his left foot, his arms spread wide with a needle dug into each.
AP-GfK Poll: A grouchy public sticking with Obama- President Barack Obama still has the public approval of a majority of Americans, but he finds himself governing an increasingly pessimistic country.
- Military divers have found the body of one of two U.S. soldiers who went missing last week as they tried to recover airdropped supplies that fell into a river in western Afghanistan, NATO said Wednesday.
THE INFLUENCE GAME: Bishops shape health care bill- Catholic bishops have emerged as a formidable force in the health care overhaul fight, using their clout with millions of Catholics and working behind the scenes in Congress to get strong abortion restrictions into the House bill.
Blackout darkens much of Brazil and Paraguay- Brazil emerged early Wednesday from a widespread power outage that plunged its major cities into darkness for hours, prompting concern from residents about another black eye for a country hosting the 2016 Olympic Games.
- Male factory workers in China who got very high doses of a chemical that's been widely used in hard plastic bottles had high rates of sexual problems, researchers reported Wednesday.
Swift wins 2nd straight BMI award for top song- Taylor Swift started what could be an interesting week with her second straight song of the year award at the BMI Country Awards Tuesday, when Kris Kristofferson was honored as an icon.
NASA and Industry Team Successfully Test Orion Launch Abort Motor
This inaugural test of Orion's full-scale abort motor marks the first time such a test has been conducted since the Apollo Program tested its launch escape system in the 1960s. This demonstration was the culmination of a series of motor and component tests conducted earlier this year in preparation for the Pad Abort-1 Flight Test, which will test the abort system's capabilities using a full-scale crew module mockup.
Orion's abort motor has the same mission as Apollo's -- to safely lift the Orion crew module away from the launch vehicle, pulling the crew to safety in the event of an emergency on the launch pad or during initial ascent phase.
The abort motor, which stands more than 17 feet tall and spans three feet in diameter, has a manifold with four exhaust nozzles. It was fixed into a vertical test stand with its nozzles pointing skyward. Upon ignition, the abort motor fired for five seconds with the exhaust plume flames reaching up to 100 feet in height. The high-impulse motor was specifically developed so the majority of its propellant would be expended in the first three seconds, delivering the half million pounds of thrust needed to pull the crew module safely away from its launch vehicle.
Unlike Apollo, Orion's abort motor utilizes a composite case, and exhaust turn-flow technology rather than a tower, which results in weight savings, improved performance and improved success in crew survival during an abort. Instead of the rocket plume exiting straight out a nozzle at the aft end, the manifold is placed at the forward end of the motor. The rocket thrust enters the manifold and is turned 155 degrees exiting out the four nozzles, creating a forward-pulling force.
A series of earlier tests were performed leading up to this first full-scale demonstration. Those earlier tests included:
-- Five subscale test firings incorporating reverse flow technology. -- Full-scale hydroproof and superproof operation pressure tests were conducted on the composite case, igniter bottle and manifold. -- During casting, the propellant was tested to ensure the chemistry met abort motor requirements.ATK is responsible for the launch abort motor through a contract to Orbital Sciences Corporation, who is responsible for integrating the LAS motor for Lockheed Martin Corporation -- Orion's prime contractor. The Orion Launch Abort System (LAS) program is managed out of NASA's Langley Research Center.
The Orion crew exploration vehicle sits atop the Ares I crew launch vehicle. The Orion features an advanced capsule design with state-of-the-art technology that will transport humans to and from the International Space Station, the moon and other destinations beyond low-Earth orbit.
The next major milestone is the Pad Abort-1 Flight Test, scheduled to take
place at the White Sands Missile Range in
About Lockheed Martin
Headquartered in
About Orbital
Orbital serves as the lead contractor for the Launch Abort System of the
Orion Program. Orbital is a one of the world's leading space technology
companies, specializing in the development and operation of smaller-size
satellite and launch systems. The company employs more than 3,600 people in 10
states and generates over
About ATK
ATK is also the prime contractor for Ares I first stage. The first stage
is a five-segment solid rocket motor that is derived from the proven
technology of the twin boosters used to launch the shuttle. ATK is a premier
aerospace and defense company with more than 17,000 employees in 21 states and
approximately
|
|
More Business_and_Finance Releases
(NITE): Knight Introduces Knight Link: A New Source of Liquidity for Europe
