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  2. Leak-down tester - Wikipedia

    en.wikipedia.org/wiki/Leak-down_tester

    A compression tester. Leak-down testing is a static test. Leak-down tests cylinder leakage paths. Leak-down primarily tests pistons and rings, seated valve sealing, and the head gasket. Leak-down will not show valve timing and movement problems, or piston movement related sealing problems. Any test should include both compression and leak-down.

  3. Data differencing - Wikipedia

    en.wikipedia.org/wiki/Data_differencing

    Main concerns for data differencing are usability and space efficiency (patch size).. If one simply wishes to reconstruct the target given the source and patch, one may simply include the entire target in the patch and "apply" the patch by discarding the source and outputting the target that has been included in the patch; similarly, if the source and target have the same size one may create a ...

  4. Flight test instrumentation - Wikipedia

    en.wikipedia.org/wiki/Flight_test_instrumentation

    Flight test instrumentation (FTI) is monitoring and recording equipment fitted to aircraft for specific flight tests. The development program for a new aircraft design has a number of aircraft each of which has tasks to perform for development and certification tests. They are each fitted with FTI specific to their allotted tasks.

  5. Cabin pressurization - Wikipedia

    en.wikipedia.org/wiki/Cabin_pressurization

    The pressure differential varies between aircraft types, typical values are between 540 hPa (7.8 psi) and 650 hPa (9.4 psi). [35] At 39,000 ft (11,887 m), the cabin pressure would be automatically maintained at about 6,900 ft (2,100 m), (450 ft (140 m) lower than Mexico City), which is about 790 hPa (11.5 psi) of atmosphere pressure.

  6. Compression lift - Wikipedia

    en.wikipedia.org/wiki/Compression_lift

    The basic concept of compression lift is well known; "planing" boats reduce drag by "surfing" on their own bow wave in exactly the same fashion. Using this effect in aircraft is more difficult, however, because the "wake" is not generated until supersonic speeds are reached, and is highly angled.

  7. Pratt & Whitney F119 - Wikipedia

    en.wikipedia.org/wiki/Pratt_&_Whitney_F119

    The production engines were fitted on the EMD/production F-22, and were first flown on the aircraft's maiden flight on 7 September 1997. [8] [9] A total of 507 engines were produced. [10] The F119 Heavy Maintenance Center (HMC) for depot overhaul is located at Tinker Air Force Base, Oklahoma, with the first overall completed in 2013. [11]

  8. Pitot–static system - Wikipedia

    en.wikipedia.org/wiki/Pitot–static_system

    In some aircraft, two ADCs receive total and static pressure from independent pitot tubes and static ports, and the aircraft's flight data computer compares the information from both computers and checks one against the other. There are also "standby instruments", which are back-up pneumatic instruments employed in the case of problems with the ...

  9. MIL-STD-1760 - Wikipedia

    en.wikipedia.org/wiki/MIL-STD-1760

    MIL-STD-1760 Aircraft/Store Electrical Interconnection System defines a standardized electrical interface between a military aircraft and its carriage stores. Carriage stores range from weapons, such as GBU-31 JDAM, to pods, such as AN/AAQ-14 LANTIRN, to drop tanks. Prior to adoption and widespread use of MIL-STD-1760, new store types were ...

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