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SCIENTIFIC-ATLANTA SELECTED FOR SECOND PHASE OF THE U.S. ARMY'S OBSERVE PROGRAM

 ATLANTA, March 29 /PRNewswire/ -- Scientific-Atlanta (NYSE: SFA) has been selected by the U.S. Army to provide equipment and support to the second phase of the Onboard System for Evaluation of Rotors, Vibration and Engines (OBSERVE).
 The OBSERVE program provides onboard monitoring systems on U.S. Army helicopters to reduce operating and maintenance costs by minimizing aircraft vibration levels, reducing collateral damage to airframes, electronics and mechanical systems and by decreasing the number of dedicated maintenance flights for rotor track and balance adjustments.
 The improvements are achieved by using the OBSERVE system to locate mechanical problems and warn pilots of impending failures so that adjustments and preventive measures can be taken by maintenance personnel.
 Scientific-Atlanta's Signal Processing Systems Division participated in the first phase of the program which was completed in July. During the first phase, a modified Army Vibration Analyzer was mounted permanently onboard a CH-47 Chinook helicopter. Measurement of rotor track and vibration, calculation and storage of Health Indicator Tests and Turbine Engine Assurance Tests, plus engine, oil cooler and transmission monitoring were performed either on demand or continuously.
 With the system installed, the aircraft was able to fly at 140 knots with a maximum sling load. A remote control device collected the rotor track and balance data on demand without increasing the pilot's workload. The onboard system automatically computed the maintenance adjustments. The information was made available to the maintenance crews at the end of each flight. Collected data was archived and the information evaluated for trends and in-depth analysis on a computer.
 OBSERVE's first phase results proved that aircraft could be kept continuously at minimal vibration levels by acquiring data on regular flights and making small rotor head adjustments to ensure vibration levels remain under 0.2 inches per second.
 During the second phase of the OBSERVE program, which began in February, OBSERVE systems will be installed on 10 CH-47 aircraft at two different U.S. Army sites. The aircraft will be compared to 10 other CH-47 helicopters without the OBSERVE equipment and monitored for operations and maintenance cost reductions, incidents of component removal, failure trends and other maintenance problems.
 Signal Processing Systems Division supplies a variety of acoustics, monitoring and diagnostics systems to government and commercial customers worldwide.
 Scientific-Atlanta, Inc. is a world leader in broadband communications systems, cable television electronics, satellite-based communications networks and instrumentation for industrial, telecommunications and government applications.
 -0- 3/29/93
 /CONTACT: Scott Wood of Scientific-Atlanta, 404-903-2503 or 404-963-8293/
 (SFA)


CO: Scientific-Atlanta, Inc.; U.S. Army ST: Georgia IN: CPR SU:

BN-BR -- AT007 -- 0652 03/29/93 15:59 EST
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Date:Mar 29, 1993
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