Download or read book Effects of Internal Yaw Vectoring Devices on the Static Performance of a Pitch Vectoring Nonaxisymmetric Convergent Divergent Nozzle written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was conducted in the static test facility of the Langley 16-Foot Transonic Tunnel to evaluate the internal performance of a nonaxisymmetric convergent divergent nozzle designed to have simultaneous pitch and yaw thrust vectoring capability. This concept utilized divergent flap deflection for thrust vectoring in the pitch plane and flow-turning deflectors installed within the divergent flaps for yaw thrust vectoring. Modifications consisting of reducing the sidewall length and deflecting the sidewall outboard were investigated as means to increase yaw-vectoring performance. This investigation studied the effects of multiaxis (pitch and yaw) thrust vectoring on nozzle internal performance characteristics. All tests were conducted with no external flow, and nozzle pressure ratio was varied from 2.0 to approximately 13.0. The results indicate that this nozzle concept can successfully generate multiaxis thrust vectoring. Deflection of the divergent flaps produced resultant pitch vector angles that, although dependent on nozzle pressure ratio, were nearly equal to the geometric pitch vector angle. Losses in resultant thrust due to pitch vectoring were small or negligible. The yaw deflectors produced resultant yaw vector angles up to 21 degrees that were controllable by varying yaw deflector rotation. However, yaw deflector rotation resulted in significant losses in thrust ratios and, in some cases, nozzle discharge coefficient. Either of the sidewall modifications generally reduced these losses and increased maximum resultant yaw vector angle. During multiaxis (simultaneous pitch and yaw) thrust vectoring, little or no cross coupling between the thrust vectoring processes was observed. Asbury, Scott C. Langley Research Center CONVERGENT-DIVERGENT NOZZLES; DEFLECTORS; FLAPS (CONTROL SURFACES); NOZZLE FLOW; PITCH (INCLINATION); PROPULSION SYSTEM PERFORMANCE; STATIC TESTS; THRUST VECTOR CONTROL; WIND TUNNEL TESTS; YAW; DISCHARGE COEFFICIENT; NOZZLE INSERTS; ...
Download or read book Effects of Internal Yaw vectoring Devices on the Static Performance of a Pitch vectoring Nonaxisymmetric Convergent divergent Nozzle written by Scott C. Asbury and published by . This book was released on 1993 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Thrust vectoring Performance of Nonaxisymmetric Convergent divergent Nozzles with Post exit Yaw Vanes written by Robert J. Foley and published by . This book was released on 1991 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Performance of Nonaxisymmetric Nozzles with Yaw Thrust Vectoring Vanes written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-10 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: A static test was conducted in the static test facility of the Langley 16 ft Transonic Tunnel to evaluate the effects of post exit vane vectoring on nonaxisymmetric nozzles. Three baseline nozzles were tested: an unvectored two dimensional convergent nozzle, an unvectored two dimensional convergent-divergent nozzle, and a pitch vectored two dimensional convergent-divergent nozzle. Each nozzle geometry was tested with 3 exit aspect ratios (exit width divided by exit height) of 1.5, 2.5 and 4.0. Two post exit yaw vanes were externally mounted on the nozzle sidewalls at the nozzle exit to generate yaw thrust vectoring. Vane deflection angle (0, -20 and -30 deg), vane planform and vane curvature were varied during the test. Results indicate that the post exit vane concept produced resultant yaw vector angles which were always smaller than the geometric yaw vector angle. Losses in resultant thrust ratio increased with the magnitude of resultant yaw vector angle. The widest post exit vane produced the largest degree of flow turning, but vane curvature had little effect on thrust vectoring. Pitch vectoring was independent of yaw vectoring, indicating that multiaxis thrust vectoring is feasible for the nozzle concepts tested. Mason, Mary L. and Berrier, Bobby L. Langley Research Center...
Download or read book NASA Technical Paper written by and published by . This book was released on 1990 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Investigation of Several Yaw Vectoring Concepts on Nonaxisymmetric Nozzles written by Mary L. Mason and published by . This book was released on 1985 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Performance of a Fixed Shroud Nonaxisymmetric Nozzle Equipped with an Aft Hood Exhaust Deflector written by Scott C. Asbury and published by . This book was released on 1997 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Performance of Two Nozzles Utilizing Gimbal Concepts for Thrust Vectoring written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-18 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The internal performance of an axisymmetric convergent-divergent nozzle and a nonaxisymmetric convergent-divergent nozzle, both of which utilized a gimbal type mechanism for thrust vectoring was evaluated in the Static Test Facility of the Langley 16-Foot Transonic Tunnel. The nonaxisymmetric nozzle used the gimbal concept for yaw thrust vectoring only; pitch thrust vectoring was accomplished by simultaneous deflection of the upper and lower divergent flaps. The model geometric parameters investigated were pitch vector angle for the axisymmetric nozzle and pitch vector angle, yaw vector angle, nozzle throat aspect ratio, and nozzle expansion ratio for the nonaxisymmetric nozzle. All tests were conducted with no external flow, and nozzle pressure ratio was varied from 2.0 to approximately 12.0. Berrier, Bobby L. and Taylor, John G. Langley Research Center CONVERGENT-DIVERGENT NOZZLES; GIMBALS; NOZZLE EFFICIENCY; NOZZLE GEOMETRY; THRUST VECTOR CONTROL; ASPECT RATIO; PERFORMANCE TESTS; PITCH (INCLINATION); WIND TUNNEL TESTS; YAW...
Download or read book Static Internal Performance of an Axisymmetric Nozzle with Multiaxis Thrust vectoring Capability written by George T. Carson and published by . This book was released on 1991 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Investigation of a Multiaxis Thrust Vectoring Nozzle With Variable Internal Contouring Ability written by David J. Wing and published by . This book was released on 1997 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Static Performance of Nonaxisymmetric Nozzles with Yaw Thrust vectoring Vanes written by Mary L. Mason and published by . This book was released on 1988 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Performance of a Hybrid Axisymmetric nonaxisymmetric Convergent divergent Nozzle written by John G. Taylor and published by . This book was released on 1991 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Scientific and Technical Publications written by and published by . This book was released on 1987 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
