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  2. Allison Model 250 - Wikipedia

    en.wikipedia.org/wiki/Allison_Model_250

    Data from The Instrumentation Design And Control of a T63-A-700 Gas Turbine Engine General characteristics Type: Turboshaft Length: 40.5 in (1,029 mm) Diameter: 22.5 in (572 mm) Dry weight: 138.5 lb (63 kg) dry Components Compressor: 6-stage axial + 1-stage centrifugal compressors Combustors: Single can combustion chamber Turbine: 2-stage axial gas generator power turbine + 2-stage axial free ...

  3. MD Helicopters MD 500 - Wikipedia

    en.wikipedia.org/wiki/MD_Helicopters_MD_500

    Data from MD500E Performance Specifications, The International Directory of Civil Aircraft General characteristics Crew: 2 Capacity: 3 passengers Length: 32 ft 7 in (9.93 m) Height: 8 ft 9 in (2.67 m) Empty weight: 1,591 lb (722 kg) Max takeoff weight: 3,550 lb (1,610 kg) Powerplant: 1 × Allison 250-C30 turboshaft engine, 650 shp (480 kW) Main rotor diameter: 27 ft 4 in (8.33 m) Main rotor ...

  4. Rolls-Royce RR300 - Wikipedia

    en.wikipedia.org/wiki/Rolls-Royce_RR300

    For instance the Model 250-C40, with an overall pressure ratio of 9.2:1 at an airflow 6.1 lb/s, develops 715 shp. The RR300 mates a scaled-down centrifugal compressor from the Model 250-C40/47 to a combustor and turbine similar to that of the Model 250-C20, replacing the C20's complex six-stage axial/single-stage centrifugal compressor.

  5. Bell Eagle Eye - Wikipedia

    en.wikipedia.org/wiki/Bell_Eagle_Eye

    The two demonstrator aircraft were powered by an Allison 250-C20 turboshaft engine mounted in the center fuselage, with a transmission system driving a tilting rotor at the end of each wing. [1] The aircraft had its maiden flight on March 6, 1998, [2] and then entered a flight test program. Phase 1 (land-based operations testing) was completed ...

  6. DMS-100 - Wikipedia

    en.wikipedia.org/wiki/DMS-100

    The NT1X48 processor maintenance card contained a thumbwheel on the faceplate to enable various diagnostic tests of the CPU. A later modification of these same five circuit boards with faster pin-compatible discrete logic devices enabled the CPU to operate at 40 MHz allowing central offices to improve call throughput capacity by 10 percent. [ 3 ]

  7. Rolls-Royce C range engines - Wikipedia

    en.wikipedia.org/wiki/Rolls-Royce_C_range_engines

    The Rolls-Royce C range was a series of in-line 4, 6 and 8 cylinder diesel engines used in small locomotives, railcars, construction vehicles, and marine and similar applications.

  8. AgustaWestland AW109 - Wikipedia

    en.wikipedia.org/wiki/AgustaWestland_AW109

    The first production model, powered by two Allison Model 250-C20 turboshaft engines. It made its first flight on 4 August 1971. Initially, the A109 was marketed under the name of "Hirundo" (Latin for the swallow), but this was dropped within a few years. A109A EOA Military version for the Italian Army. A109A Mk.II

  9. Gulfstream III - Wikipedia

    en.wikipedia.org/wiki/Gulfstream_III

    In 2013, the FAA modified 14 CFR part 91 rules to prohibit the operation of jets weighing 75,000 pounds or less that are not stage 3 noise compliant after December 31, 2015. The Gulfstream III is listed explicitly in Federal Register 78 FR 39576. Any Gulfstream IIIs that have not been modified by installing Stage 3 noise compliant engines or ...

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