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Book Internal Performance of a Nonaxisymmetric Nozzle with a Rotating Upper Flap and a Center Pivoted Lower Flap

Download or read book Internal Performance of a Nonaxisymmetric Nozzle with a Rotating Upper Flap and a Center Pivoted Lower Flap written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was conducted at wind-off conditions in the static-test facility of the Langley 16-Foot Transonic Tunnel to determine the internal performance characteristics of a single expansion-ramp nozzle with thrust-vectoring capability to 105 degrees. Thrust vectoring was accomplished by the downward rotation of an upper flap with adaptive capability for internal contouring and a corresponding rotation of a center-pivoted lower flap. The static internal performance of configurations with pitch thrust-vector angles of 0 degrees, 60 degrees, and 105 degrees each with two throat areas, was investigated. The nozzle pressure ratio was varied from 1.5 to approximately 8.0 (5.0 for the maximum throat area configurations). Results of this study indicated that the nozzle configuration of the present investigation, when vectored, provided excellent flow-turning capability with relatively high levels of internal performance. In all cases, the thrust vector angle was a function of the nozzle pressure ratio. This result is expected because the flow is bounded by a single expansion surface on both vectored- and unvectored-nozzle geometries. Wing, David J. and Leavitt, Laurence D. and Re, Richard J. Langley Research Center...

Book NASA Scientific and Technical Publications

Download or read book NASA Scientific and Technical Publications written by and published by . This book was released on 1988 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Static Investigation of a Two dimensional Convergent divergent Exhaust Nozzle with Multiaxis Thrust vectoring Capability

Download or read book Static Investigation of a Two dimensional Convergent divergent Exhaust Nozzle with Multiaxis Thrust vectoring Capability written by John Gordon Taylor and published by . This book was released on 1990 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NASA Technical Paper

Download or read book NASA Technical Paper written by and published by . This book was released on 1992 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NASA Technical Paper

    Book Details:
  • Author : United States. National Aeronautics and Space Administration
  • Publisher :
  • Release : 1990
  • ISBN :
  • Pages : 424 pages

Download or read book NASA Technical Paper written by United States. National Aeronautics and Space Administration and published by . This book was released on 1990 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Static Performance of a Cruciform Nozzle with Multiaxis Thrust Vectoring and Reverse Thrust Capabilities

Download or read book Static Performance of a Cruciform Nozzle with Multiaxis Thrust Vectoring and Reverse Thrust Capabilities written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-16 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multiaxis thrust vectoring nozzle designed to have equal flow turning capability in pitch and yaw was conceived and experimentally tested for internal, static performance. The cruciform-shaped convergent-divergent nozzle turned the flow for thrust vectoring by deflecting the divergent surfaces of the nozzle, called flaps. Methods for eliminating physical interference between pitch and yaw flaps at the larger multiaxis deflection angles was studied. These methods included restricting the pitch flaps from the path of the yaw flaps and shifting the flow path at the throat off the nozzle centerline to permit larger pitch-flap deflections without interfering with the operation of the yaw flaps. Two flap widths were tested at both dry and afterburning settings. Vertical and reverse thrust configurations at dry power were also tested. Comparison with two dimensional convergent-divergent nozzles showed lower but still competitive thrust performance and thrust vectoring capability. Wing, David J. and Asbury, Scott C. Langley Research Center...