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 October 24, 2014

News: U.S., South Korea delay transfer of wartime control - The U.S. and South Korea have delayed transferring wartime operational control of allied forces by taking on a “conditions-based approach” and scrapping the previously set deadline of 2015.   Business: Exclusive: Lockheed, Pentagon reach $4 billion deal for more F-35 jets - Lockheed Martin and U.S. defense...
 
 

News Briefs October 24, 2014

French moving troops toward Libyan border A top French military official says the country is moving troops toward the Libyan border within weeks and, along with U.S. intelligence, is monitoring al Qaeda arms shipments to Africa’s Sahel region. A French base will go up within weeks in a desert outpost just a hundred kilometers (60...
 
 
Navy photograph

Navy to commission submarine North Dakota

Navy photograph The PCU North Dakota (SSN 784) during bravo sea trials. The crew performed exceptionally well on both alpha and bravo sea trials. The submarine North Dakota is the 11th ship of the Virginia class, the first U.S....
 

 

Boeing announces SF Airlines order for Boeing converted freighters

Boeing announced Oct. 23 that SF Airlines has placed an order for an undisclosed number of 767-300ER passenger-to-freighter conversions (Boeing Converted Freighters). SF Airlines, a subsidiary of Shenzhen, China-based delivery services company SF Express, will accept its first redelivered 767 in the second half of 2015. “SF Express aims to become China’s most respected and...
 
 
LM-C130

Another Super Herc Little Rock Rollin’

  Lockheed Martin delivered another C-130J Super Hercules to the 61st Airlift Squadron at Little Rock Air Force Base, Ark., Oct. 23. Little Rock AFB’s new C-130J was ferried from the Lockheed Martin Aeronautics facility ...
 
 

United Technologies beats third quarter profit expectations

United Technologies Corp. Oct. 23 reported third-quarter profit of $1.85 billion as sales increased across all its businesses and the aerospace giant reported favorable tax settlements. The Hartford, Conn.,-based company said it had profit of $2.04 per share and earnings, adjusted for non-recurring gains, came to $1.82 per share. The results topped Wall Street expectations,...
 




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>