ABOUT ACE JOB FINDER CONTACT US MENU HOMEPRODUCTSCASE STUDY: LOCKHEED MARTIN F-22 APU INTAKES Case Study: LOCKHEED MARTIN F-22 APU Intakes Air vents for the F-22 which provided cooling of the APUs while sustaining extreme pressures at Mach 2. The F-22 APU Air Intake Grill. Built to Withstand Airspeeds At Mach 2. PRODUCT OVERVIEW Complex Aluminum Forms Uniquely Stronger Welds to Withstand Vibration Constructed to Withstand Extremes in Temperatures This very sophisticated design was a manufacturing challenge. Made from high-grade aluminum, the original design was soon discovered to react to air pressures at speeds above Mach 1, when the force of the air and the location of the vents created tremendous vibration of the louvers. The sound this generated, behind the cockpit, was so loud it could be heard in the cockpit through the pilot’s helmet. ACE was assigned the re-manufacturing of the new design by our key customer Honeywell. Welding aluminum is very difficult due to the nature of the metal, rapid oxidation and porosity of the welds (due to imperfect conditions, such as high humidity). The louvers, or “fins” had to withstand the extreme conditions found at speeds above Mach 1: baking-to-freezing temperatures, expansion, tremendous wind force, vibration and air turbulence. This very heavy gauge construction was developed for and exceeded the demands required for the intake grill. FEATURES HEAVY CONSTRUCTION BREAKTHROUGH COMPONENT FABRICATION COMPLEX ASSEMBLY AND SUPERIOR WELDING Built for Extreme Speed You wouldn't think a passive vent cover would need to stand up to wind. But how about wind moving faster the Mach 1? These covers, redesigned to curb vibration, stood up to air blasting in at the speed of sound. << PREVIOUS CASE STUDY: APACHE HELICOPTER PRIMARY EXHAUSTS CASE STUDY: SNOWLINE LOW PRESSURE SUMP TANKS NEXT >> TO OBTAIN THE CURRENT ACE QUALITY CLAUSES, Form 8.4.0-4 Rev. 04 CONTACT: mmonjaras@aceclearwater.com pnelson@aceclearwater.com ACE EQUIPMENT LIST CONNECT WITH US: 19815 MAGELLAN DRIVE, TORRANCE, CA 90502 SEE MAP © 2021 ACE CLEARWATER ENTERPRISES, ALL RIGHTS RESERVED