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  • Other Sources  (6)
  • 1
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    QCSEE - The key to future short-haul air transport (1979)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: The paper describes the design and test procedure for the QCSEE (quiet, clean, short-haul experimental engine). The engines designed for the YC-14 and YC-15 STOL aircraft, both use a very low fan pressure ratio to keep jet-flap noise about 3 dB below total system noise. Other noise reducing features discussed are the low tip speed fans and a carefully selected number of fan blades and vanes with adequate spacing between them. Attention is also given to the development of a low emissions combustor, and reduction of fan frame weight, through the use of graphite/epoxy material. The YC-15 engine also employs variable pitch fans to provide thrust reversal, thus saving weight. Finally, it is noted that the tests have proven that the engines could be configurated to meet the needs of a powered lift system without excessively compromising performance or weight.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: ICAO Bulletin; 34; Apr. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Quiet Clean Short-haul Experimental Engine (QCSEE) (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The design, fabrication, and testing of two experimental propulsion systems for powered lift transport aircraft are given. The under the wing (UTW) engine was intended for installation in an externally blown flap configuration and the over the wing (OTW) engine for use in an upper surface blowing aircraft. The UTW engine included variable pitch composite fan blades, main reduction gear, composite fan frame and nacelle, and a digital control system. The OTW engine included a fixed pitch fan, composite fan frame, boilerplate nacelle, and a full authority digital control. Many acoustic, pollution, performance, and weight goals were demonstrated.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA-CR-159473 , R79AEG478
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Conceptual design, evaluation and research identification for Remote Augmented Propulsive Lift Systems (RALS) with ejectors for VTOL aircraft (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Ejector concepts for use with a remote augmented lift system (RALS) exhaust nozzle were studied. A number of concepts were considered and three were selected as having the greatest promise of providing the desired aircraft and exhaust gas cooling and lift enhancement. A scale model test program is recommended to explore the effects of the more important parameters on ejector performance.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA-CR-167906 , NAS 1.26:167906 , R82AEB315
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Design of a V/STOL propulsion system for a large-scale fighter model (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Modifications were made to the existing Large-Scale STOL fighter model to simulate a V/STOL configuration. Modifications include the substitutions of two dimensional lift/cruise exhaust nozzles in the nacelles, and the addition of a third J97 engine in the fuselage to suppy a remote exhaust nozzle simulating a Remote Augmented Lift System. A preliminary design of the inlet and exhaust ducting for the third engine was developed and a detailed design was completed of the hot exhaust ducting and remote nozzle.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA-CR-166162 , R81AEG257
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    The application of QCSEE technology to V/STOL (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: While at this point in time no particular propulsion system configuration has been chosen for the V/STOL Type A, many combinations of number of fans, gas generators, and methods of power interconnection have been investigated. Low pressure systems under consideration include variable pitch and variable inlet guide vanes for thrust modulation, geared and direct turbine drive, and shaft and gas power transfer systems. Several of these features are being studied in the Quiet, Clean, Short-Haul, Experimental Engine (QCSEE) program, which is developing the technology needed for future short-haul passenger aircraft. Test status and key characteristics of QCSEE engines and their components are discussed in detail.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: AIAA PAPER 77-583 , V/STOL Conference; Jun 06, 1977 - Jun 08, 1977; Palo Alto, CA; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Quiet, Clean, Short-Haul Experimental Engines /QCSEE/ - A technology development program (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: NASA's QCSEE Program (Quiet, Clean, Short-Haul Experimental Engine) performed by the General Electric Company covers a wide range of advanced propulsion technology features applicable to future subsonic engine concepts. These technology features are combined into two engine and nacelle configurations for demonstration of program goals. This paper presents descriptions of two engine/nacelle configurations and shows the flow of technology developed in component programs into the configurations. The under-the-wing (UTW) configuration, featuring major innovative and advanced components, such as a large variable pitch fan and a composite material integrated engine and nacelle structure, has been tested at General Electric's Peebles, Ohio test facility. The key characteristics of the engine as observed from the initial test series are presented.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: ASME PAPER 77-GT-109 , Gas Turbine Conference and Products Show; Mar 27, 1977 - Mar 31, 1977; Philadelphia, PA
    Format: text
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    NASA TECHNICAL REPORTS
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