Business

June 28, 2012

Aerojet delivers 100th HiPAT thruster

Aerojet, a GenCorp company, is marking the delivery of its 100th R-4D-15 High Performance Apogee Thruster to Boeing Space & Intelligence Systems in a ceremony today at Aerojet’s Redmond, Calif., production facility.

The event is commemorating the milestone delivery and the R-4D record of 100 percent mission success throughout five decades of service.

As the premier apogee engine of choice for raising large satellites and spacecraft into geosynchronous orbit, the HiPAT performs orbit-raising maneuvers for many of the world’s communication satellite platforms, including Astrium’s Eurostar 3000, Boeing Space Systems’ 702HP, MELCO’s DS-2000 and Loral’s LS-1300. It also has played critical roles in NASA missions such as Cassini’s orbit insertion of Saturn.

“The HiPAT is the highest-performing rocket engine in its class,” said Aerojet Vice of President of Space and Launch Systems, Julie Van Kleeck. “By offering a higher specific impulse than comparable engines, the HiPAT reduces the total amount of fuel required for the mission, allowing for either more equipment or longer operation of the spacecraft.”

The R-4D product line includes a series of liquid bipropellant engines using the propellant combination of nitrogen tetroxide oxidizer and either monomethylhydrazine or hydrazine fuel. These propellants are storable at room temperature and do not require a separate ignition source, simplifying many higher level integration issues while still providing high performance.

The R-4D was originally developed for the reaction control systems for the Apollo Service Module and Lunar Excursion Module. The HiPAT is the fifth generation of the R-4D 100 lbf thrust class of liquid bipropellant engines.

“This engine has incredible lineage,” said Aerojet Bipropellant Propulsion Program Manager, Steve Harper. “R-4Ds have supported every Apollo flight. During the Apollo program, 469 engines were flown in space and logged more than 875,000 pulses with the equivalent time of 16 years in space.”

Over the years, the R-4D has evolved into new design configurations as more modern rocket engine materials and technologies were developed. The R-4D-11, an intermediate iteration, is still in active production and has played critical roles in orbital maneuvering and braking for International Space Station missions on the European ATV and Japanese HTV resupply vehicles. It also is planned for use on the Orion service module. Developments in material systems in the 1990s resulted in the high performance HiPAT design flying today. More than 850 R-4Ds have been produced to date, including the 100th HiPAT, and all have performed successfully during the missions.

Looking to the future, Aerojet now has a next-generation design iteration which offers increased performance and reliability. The “dual-mode” HiPAT and Advanced Material Bipropellant Rocket thrusters provide a 1-3 percent improvement over the HiPAT and a nearly 20 percent performance increase over the original Apollo design. The HiPAT DM was qualified in 2002 and the AMBR thruster is ready for qualification testing.




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


 
 

 

Headlines August 1, 2015

News: Marine F-35 jets deemed ready for combat – A small batch of the highly anticipated – and much criticized – F-35B Joint Strike Fighter jets have been approved for combat by the U.S. Marine Corps.   News: Reports: China to sell J-10 fighter to Iran, Syria? – Iran is rumored external link to be buying 150...
 
 

News Briefs August 3, 2015

Russian military helicopter crashes during air show, one dead A Russian military helicopter crashed Aug. 2 during an aerobatic display, killing one of its crewmembers and injuring another, the Defense Ministry said. The Mi-28 helicopter gunship was part of a flight of helicopters performing aerobatics at the Dubrovichi firing range in Ryazan region, about 170...
 
 
Army photograph by John Andrew Hamilton

Improved Multiple Launch Rocket System tested at White Sands Missile Range

Army photograph by John Andrew Hamilton A Multiple Launch Rocket System with an improved armored cab fires a training rocket during a test. The rockets were simple training rockets and not equipped with a warhead, but still gen...
 

 

Missile Defense Agency, Raytheon demonstrate SM-6’s new anti-ballistic missile defense capability

In a first-of-its-kind test, the U.S. Navy fired a Raytheon Standard Missile-6, intercepting and destroying a short-range ballistic missile target at sea. The successful U.S. Missile Defense Agency test proved a modified SM-6 can eliminate threat ballistic missiles in their final seconds of flight. “SM-6 is the only missile in the world that can do...
 
 

Northrop Grumman-developed stealthy data link validated as combat ready with U.S. Marine Corps

the U.S. Marine Corps achieving F-35B initial operating capability, the Multifunction Advanced Data Link waveform developed by Northrop Grumman has been proven a key combat-ready capability of the F-35 Lightning II program. MADL is a high-data-rate, directional communications link that allows fifth-generation aircraft to communicate and coordinate tactics covertly. During testing of the Lockhee...
 
 

Lockheed Martin technology helps pilots, UAS operators share data, stay safe

As Unmanned Aircraft Systems take to the skies, it is essential for safety that UAS operators and pilots are aware of each other. To help provide this shared situational awareness, Lockheed Martin has deployed the first components of a UAS traffic management system that is available to the UAS community now. Lockheed Martin’s online Flight...
 




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=""> <s> <strike> <strong>