Accession Number : AD0466202


Title :   TME-300 COMPUTER EVALUATION OF TELECTRO-MEK, INC., RAM DRAG AND THRUST COMPUTERS.


Descriptive Note : Technical rept.,


Corporate Author : NAVAL AIR TURBINE TEST STATION TRENTON NJ AERONAUTICAL TURBINE LAB


Personal Author(s) : Femia, Joseph E


Report Date : May 1965


Pagination or Media Count : 83


Abstract : The net thrust (TME-300), gross thrust (TME-300C1), ram drag (TME-300-C2) computers were evaluated on a J79-GE-8 engine at simulated flight conditions ranging from static sea level to 50,000 ft, M = 1.4. The purpose of these tests was to determine the accuracy of the computers. The TME-300-C2 indicated ram drag was within =1.3% F.S. or =115 lbs of the calculated and the measured ram drags. The TME-300-C1 indicated gross thrust was within =2.5% F.S. (=375 lbs) of the calculated and the measured thrusts for 81% of the data. The gross thrust computer operated erratically at altitudes below 5,000 ft. For altitudes above 5,000 ft, the computer indicated gross thrust was within =2.0% F.S. (=295 lbs). The TME-300 indicated net thrust was within =3.0% F.S. (=450 lbs) of the calculated and the measured net thrust. The TME-300-C1 gross thrust computer was bench tested and found to malfunction on several occasions. Despite the malfunctions, the computer demonstrated an accuracy of indicating gross thrust to within =1.2% F.S. (=180 lbs) of the calculated gross thrust. This degree of accuracy was not attained during the engine tests. (Author)


Descriptors :   *TURBOJET ENGINES , FLIGHT INSTRUMENTS , COMPUTERS , EXHAUST GASES , PRESSURE , TRANSDUCERS , THRUST , DRAG , MEASUREMENT , ALTITUDE CHAMBERS , THRUST METERS


Distribution Statement : APPROVED FOR PUBLIC RELEASE