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PAIR OF P&W TURBOPUMPS SUCCESSFULLY TESTED

 PAIR OF P&W TURBOPUMPS SUCCESSFULLY TESTED
 WEST PALM BEACH, Fla., Dec. 20 /PRNewswire/ -- A pair of Pratt &


Whitney designed high pressure turbopumps has been successfully tested in a Space Shuttle Main Engine (SSME) at NASA's John C. Stennis Space Center in Mississippi.
 The Dec. 17 test was a 1.5 second ignition test. The turbopumps are expected to demonstrate full power operation on additional engine firings early next year. The pumps deliver liquid hydrogen and liquid oxygen propellants to the main combustion chambers of the Space Shuttle's three main engines.
 "This test marks a major milestone in our effort to develop improved durability turbopumps for the SSME," said Robert A. Wolfe, executive vice president, Government Engines & Space Propulsion (GESP). "We have been working very closely with NASA to design, fabricate and test these improved turbopumps. This is a key step in certifying the oxidizer turbopump for flight and getting it into the nation's fleet."
 Originally, the NASA-sponsored program called for the development and flight qualification of a set of turbopumps that would be interchangeable with current pumps and have a 55-mission life, or approximately 7.5 hours of operation. Declining resources recently forced NASA to defer the fuel turbopump certification program until after flight certification of the oxidizer pump.
 "We expect upcoming tests to demonstrate greatly extended turbopump life capability for the SSME," said Joseph P. Zimonis, executive vice president of USBI (UTC division aligned under P&W's GESP). "These pumps feature major technological advances that increase durability and operating margins, not only for the Space Shuttle Main Engine program, but for future space propulsion applications as well."
 Additional oxygen turbopumps are being assembled for tests next year. The program's production phase requires turbopumps to be delivered between 1993 and 1997. The P&W oxidizer turbopump is planned to be used on Space Shuttle engines beginning in 1994.
 A P&W SSME oxidizer turbopump weighs the same as a V-8 automobile engine but develops 28,000 horsepower and could empty a swimming pool in 60 seconds. Its main shaft rotates at 24,000 rpm, compared to 3,000 rpm for an automobile engine operating at 60 mph. The maximum equivalent horsepower developed by the Shuttle's three main engines combined is over 37 million, and the energy released is the equivalent to the output of 23 Hoover dams.
 Pratt & Whitney's Government Engines & Space Propulsion (GESP) facility, headquartered near West Palm Beach, Fla., designs, develops and supports military jet engines, and provides a wide variety of propulsion systems and launch services for the U.S. space program. Other GESP units are Chemical Systems Division, San Jose, Calif., and USBI, with facilities in Florida, Alabama and Louisiana. Pratt & Whitney is a unit of United Technologies Corporation (NYSE: UTX), Hartford, Conn.
 (UTX)
 -0- 12/20/91
 /CONTACT: Patrick Louden of Pratt & Whitney, 407-796-6793/ CO: Pratt & Whitney ST: Florida IN: ARO SU:


AW-JJ -- FL007 -- 4429 12/20/91 14:28 EST
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Date:Dec 20, 1991
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