Éditoriaux Défense Sécurité Terrorisme Zones de conflits Logistique Livres de référence Liens
Terre Air Mer Gendarmerie Renseignement Infoguerre Cyber Recherche

Technology Improves Jet Engine Readiness

Technology Improves Jet Engine Readiness

By Mike Griffin, Air Force Research Laboratory.

Dublin, Ohio -- March 5, 2001 (AFPN) -- The Air Force has a new weapon in the battle against foreign object damage -- a laser that strengthens engine fan blades and rotors.

Otha Davenport, director of engineering for Aeronautical System Center's Propulsion Product Group, checks the results of a laser shock peening strengthening process on an F-119 engine's bladed rotor at LSP Technologies in Dublin, Ohio. An LSP employee assists. (Courtesy photo)

Called "laser shock peening," this technology uses high-powered lasers to "cure" aircraft engine parts. This makes them stronger and better able to resist foreign objects that causes millions of dollars in damaged aircraft engine parts each year.

LSP Technologies Inc., of Dublin, developed the technology through the Air Force Research Laboratory's manufacturing technology program, known as ManTech.

During the "curing" process, a laser is repeatedly fired along the edges of the blades. The shock wave caused when the laser beam strikes the blade's surface actually compresses the metal, toughening the blade. This process increases blade damage tolerance by as much as 15 times normal strength, according to program officials.

"By (using) new technologies, such as laser shock peening, to make Air Force systems more reliable, affordable and maintainable, ManTech is helping the warfighter," said Dan McDermott, chief of the directorate's manufacturing technology division. The new method replaces a former process called shot peening, where metal or glass beads were fired at blade edges, McDermott said.

"This original process was good, but the new laser approach is better because it drives the shock waves deeper into the metal, producing engine blades that are more resistant to failure or foreign object damage," he said. "This translates into a major increase in warfighting capability for the Air Force."

Using laser shock peening, it takes about 30 minutes to process one blade on the F-110 engine used in the Air Force's F-15E Strike Eagle and F-16C and D Fighting Falcon fighter aircraft. Under the ManTech program, LSP Technologies has developed an automated process using robotics that eliminates handling the blades manually during the peening process, according to McDermott.

Called Rapid Coater, this new approach reduces peening time from 30 to 12 minutes.

"In time, we anticipate reducing that to four minutes per blade, using a newer, faster laser dubbed Rapid Peen," said David W. See, LSP directorate program manager. "Laser shock peening, more economical than the old method, is increasing throughput by nine times over previous, manual peening activities. In fact, we've just kicked off a new contract to laser peen integrally bladed rotors from the F-119 engine used in the F-22 Raptor."

"Since we implemented laser shock peening processes, I can't think of a time when we've lost an engine due to high-cycle fatigue of laser-peened fan blades," said Otha Davenport, director of engineering for Aeronautical Systems Center's propulsion product group. "Laser shock peening allows us to peen areas of the blades other peening processes cannot reach. For example, there are probably half-a-dozen places alone where laser shock peening can be used to increase durability of the F-119 engine." (Courtesy of Air Force Material Command News Service)

Related Links

- Air Force Research Laboratory

 

Derniers articles

Verdun 2016 : La légende de la « tranchée des baïonnettes »
Eyes in the Dark: Navy Dive Helmet Display Emerges as Game-Changer
OIR Official: Captured Info Describes ISIL Operations in Manbij
Cyber, Space, Middle East Join Nuclear Triad Topics at Deterrence Meeting
Carter Opens Second DoD Innovation Hub in Boston
Triomphe de St-Cyr : le Vietnam sur les rangs
Dwight D. Eisenhower Conducts First OIR Missions from Arabian Gulf
L’amiral Prazuck prend la manœuvre de la Marine
Airmen Practice Rescuing Downed Pilots in Pacific Thunder 16-2
On ne lutte pas contre les moustiques avec une Kalachnikov...
Enemy Mine: Underwater Drones Hunt Buried Targets, Save Lives
Daesh Publications Are Translated Into Eleven Languages
Opération Chammal : 10 000 heures de vol en opération pour les Mirage 2000 basés en Jordanie
Le Drian : Daech : une réponse à plusieurs niveaux
Carter: Defense Ministers Agree on Next Steps in Counter-ISIL Fight
Carter Convenes Counter-ISIL Coalition Meeting at Andrews
Carter Welcomes France’s Increased Counter-ISIL Support
100-Plus Aircraft Fly in for Exercise Red Flag 16-3
Growlers Soar With B-1s Around Ellsworth AFB
A-10s Deploy to Slovakia for Cross-Border Training
We Don’t Fight Against Mosquitoes With a Kalashnikov
Bug-Hunting Computers to Compete in DARPA Cyber Grand Challenge
Chiefs of US and Chinese Navies Agree on Need for Cooperation
DoD Cyber Strategy Defines How Officials Discern Cyber Incidents from Armed Attacks
Vice Adm. Tighe Takes Charge of Information Warfare, Naval Intelligence
Truman Strike Group Completes Eight-Month Deployment
KC-46 Completes Milestone by Refueling Fighter Jet, Cargo Plane
Air Dominance and the Critical Role of Fifth Generation Fighters
Une nation est une âme
The Challenges of Ungoverned Spaces
Carter Salutes Iraqi Forces, Announces 560 U.S. Troops to Deploy to Iraq
Obama: U.S. Commitment to European Security is Unwavering in Pivotal Time for NATO
International Court to Decide Sovereignty Issue in South China Sea
La SPA 75 est centenaire !
U.S. to Deploy THAAD Missile Battery to South Korea
Maintien en condition des matériels : reprendre l’initiative
La veste « léopard », premier uniforme militaire de camouflage
Océan Indien 2016 : Opérations & Coopération
Truman Transits Strait of Gibraltar
Navy Unveils National Museum of the American Sailor
New Navy, Old Tar
Marcel Dassault parrain de la nouvelle promotion d’officiers de l’École de l’Air
RIMPAC 2016 : Ravitaillement à la mer pour le Prairial avant l’arrivée à Hawaii
Bataille de la Somme, l’oubliée
U.S., Iceland Sign Security Cooperation Agreement
Cléopatra : la frégate Jean Bart entre dans l’histoire du BPC Gamal Abdel Nasser
Surveiller l’espace maritime français aussi par satellite
America's Navy-Marine Corps Team Fuse for RIMPAC 2016
Stratégie France : Plaidoyer pour une véritable coopération franco-allemande
La lumière du Droit rayonne au bout du chemin





Directeur de la publication : Joël-François Dumont
Comité de rédaction : Jacques de Lestapis, Hugues Dumont, François de Vries (Bruxelles), Hans-Ulrich Helfer (Suisse), Michael Hellerforth (Allemagne).
Comité militaire : VAE Guy Labouérie (†), GAA François Mermet (2S), CF Patrice Théry (Asie).

Contact