Defense

March 15, 2013

Navy completes EMALS shared generator testing

The Electromagnetic Aircraft Launch System (EMALS) motor generator stores energy in the inertia of its rotor and releases that energy upon initiation of the aircraft launch onboard carriers. EMALS completed shared generator testing at Joint Base McGuire-Dix-Lakehurst, N.J., March 14. EMALS is replacing the current steam catapult system on aircraft carriers, beginning with the Gerald R. Ford (CVN 78).

The Navy’s future carrier aircraft launch system concluded a unique test event March 14, earlier than planned.

The Aircraft Launch and Recovery Equipment Program Office (PMA-251)ís Electromagnetic Aircraft Launch System, completed shared generator testing at Joint Base McGuire-Dix-Lakehurst, N.J.

EMALS is replacing the current steam catapult system on aircraft carriers, beginning with the Gerald R. Ford (CVN 78).

It is important that we ensure proper sharing and operation of the generators at the land-based facility prior to testing the full four-catapult system onboard CVN 78, reducing risk to the ship,î said George Sulich, EMALS integrated team lead.

With EMALS, the aircraft is attached to a shuttle that is propelled down the length of the catapult track by an electromagnetic field produced by the linear motors. The motor generator stores the systemís energy in the inertia of its rotor and releases that energy upon initiation of the aircraft launch.

EMALS consists of six subsystems working together and sharing components to power the four catapults on the ship. The test site only has one catapult so, up to now; the system has only had to control one launcher.

After completing the system functional demonstration phase in November 2012, the EMALS team readied the site to replicate a four-catapult ship environment. The testing simulated generator-sharing for multiple catapults by launching dead-loads, or weighted sleds.

ìAs EMALS successfully completes another test phase, I am confident we are providing the fleet with a reliable and efficient system that will revolutionize the way we launch aircraft from the Navyís newest class of carriers,î said Capt. Jim Donnelly, PMA-251 program manager.

Sulich attributed the teamís ability to team start and finish formal shared testing earlier than planned, to good preparation and coordination.

One such preparation, he said, was using a ship representative controls lab, located at prime industry partner General Atomicsí facility in Rancho Bernardo, Calif., to conduct extensive modeling and simulation of the four-catapult system, ensuring the launch controls were set up correctly.

Instead of using the full-scale system at Lakehurst to test the full EMALS software suite, we used the ship-representative controls lab, Sulich said. ìBy using the lab before we started formal testing, we were able to groom the software so that during commissioning testing we werenít really discovering anything new.

EMALS is designed to expand the operational capability of the Navyís future carriers to include all current and future carrier air wing platforms lightweight unmanned to heavy strike fighters.

It delivers necessary higher launch energy capacity; substantial improvements in system maintenance; increased reliability and efficiency; and more accurate end-speed control. The systemís technologies allow for a smooth acceleration at both high and low speeds, increasing the carrierís ability to launch aircraft with less stress on the ship and its systems.




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


 
 

 

Headlines September 29, 2014

News: U.S. military limits warplanes used for Islamic State bombings - The U.S. is relying mostly on warplanes already positioned in the region for its air war against the Islamic State, as opposed to dispatching a major buildup of aerial forces that happened in previous campaigns.   Business: At DOD, it’s use-it-or-lose-it season - As fiscal 2014...
 
 

News Briefs September 29, 2014

Navy awards ship design grant to UNO The University of New Orleans has received a $210,000 grant from the Navy s Office of Naval Research to test information gathering and analysis techniques intended to improve warship design. The goal for warship designers is to produce a vessel that can be repurposed numerous times throughout its...
 
 
Courtesy photograph

TACP-M ties it all together

Air National Guard photograph by SSgt. Lealan Buehrer Tactical air control party specialists with the 169th Air Support Operations Squadron survey an enemy-controlled landing zone before calling in close-air support Aug. 14, 20...
 

 
Air Force photograph by A1C Thomas Spangler

Nellis aggressor squadron inactivated

Air Force photograph by A1C Thomas Spangler SSgt. Justin White signals to Maj. Sam Joplin to begin taxiing a 65th Aggressor Squadron F-15 Eagle to the runway Sept. 18, 2014, at Nellis Air Force Base Nev. The roles and responsib...
 
 
Army photograph by SSgt. Mary S. Katzenberger

82nd Airborne helps commemorate 70th Anniversary of Operation Market Garden

Army photograph by SSgt. Mary S. Katzenberger A paratrooper assigned to the 82nd Airborne Division, reflects near the grave of a British paratrooper at the Arnhem Oosterbeek War Cemetery, Sept. 14, 2014, in the Netherlands. The...
 
 

Raytheon awarded $251 million Tomahawk missile contract

The U.S. Navy has awarded Raytheon a $251 million contract to procure Tomahawk Block IV tactical cruise missiles for fiscal year 2014 with an option for 2015. The contract calls for Raytheon to build and deliver Tomahawk Block IV cruise missiles to the U.S. Navy and U.K. Royal Navy. Raytheon will also conduct flight tests...
 




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>