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C-17 ANTI-ICING TESTS, 40,000 POUND AIRDROP ACCOMPLISHED

 EDWARDS AIR FORCE BASE, Calif., July 2 /PRNewswire/ -- The first in-flight anti-icing tests of the new U.S. Air Force/McDonnell Douglas C-17 Globemaster III transport were successfully conducted here this week, while another C-17 accomplished the heaviest airdrop to date in the test program.
 P-3, the third production aircraft, which returned to Edwards on May 30 after completing the first phase of extreme temperature tests at Eglin Air Force Base, Fla., flew the anti-icing tests on June 28 and 30. For the tests, a specially modified KC-135 aerial tanker sprayed a mixture of air and water to form an ice cloud that was calibrated by a specially-instrumented chase aircraft, according to Julian Chang, McDonnell Douglas flight test technical engineer.
 Ice was allowed to build up on various parts of P-3's airframe including the windshield, wheel pod, and pitot static tube (which provides airspeed and altitude information). The ice build-up rate and pattern were also evaluated by special instrumentation. The windshield anti-ice system "worked very well," Chang said, and the ice build-up on the wheel pod dropped off as expected.
 Tests conducted June 30 examined icing on wing leading-edge slats and air refueling door. In addition, in-flight tests simulated heavy rain on a landing approach. An Army helicopter sprayed water in the path of the C-17 simulating up to seven inches per hour of rainfall to test windshield wiper capability and windshield vision.
 Also on June 30, a loaded platform weighing 40,000 pounds was successfully airdropped by P-1, the first production aircraft, marking the heaviest C-17 airdrop of a single platform to date. A loaded platform weighing 35,000 pounds was dropped from P-1 on June 2.
 The C-17 flight test fleet, which includes T-1, P-2 and P-4, in addition to P-3 and P-1, surpassed the 1,500-hour total on June 11, and, as of Wednesday, had flown 433 missions for a total of 1,569 hours. Meanwhile, P-5 is undergoing simulated lightning strike tests at the Patuxent River, Md., Naval Air Warfare Center.
 P-6, the sixth production C-17 and first to join an operational Air Force unit, was delivered to the 437th Airlift Wing at Charleston Air Force Base, S.C., on June 14 after a stopover at the Air Mobility Command's annual Rodeo competition at Little Rock, Air Force Base, Ark. P-6, which is being used for maintenance crew and logistics training as well as flight training, flew a 1.4-hour training mission at Charleston on June 29, with Brig. Gen. Thomas Mikolajcik, the wing commander, on board.
 Eleven additional C-17s are currently in various stages of production at McDonnell Douglas' Long Beach, Calif., facilities. P-7, the seventh production C-17, is 97 percent complete and has started engine run-ups, preparing for its delivery to become the second C-17 to join the 437th Airlift Wing at Charleston. P-17 is the latest C-17 to begin the production cycle.
 -0- 7/2/93
 /CONTACT: Jim Ramsey of McDonnell Douglas Aerospace, 310-522-2567/


CO: McDonnell Douglas Aerospace ST: California IN: ARO SU:

JB -- LA009 -- 8114 07/02/93 11:47 EDT
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Date:Jul 2, 1993
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