Author: Francis J. CaponePublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 280
Book Description
Parametric Investigation of Single-expansion-ramp Nozzles at Mach Numbers from 0.60 to 1.20
Author: Francis J. CaponePublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 280
Book Description
Parametric Investigation of Single-Expansion-Ramp Nozzles at Mach Numbers from 0. 60 to 1. 20
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781724326720
Category :
Languages : en
Pages : 278
Book Description
An investigation was conducted in the Langley 16-Foot Transonic Tunnel to determine the effects of varying six nozzle geometric parameters on the internal and aeropropulsive performance characteristics of single-expansion-ramp nozzles. This investigation was conducted at Mach numbers from 0.60 to 1.20, nozzle pressure ratios from 1.5 to 12, and angles of attack of 0 deg +/- 6 deg. Maximum aeropropulsive performance at a particular Mach number was highly dependent on the operating nozzle pressure ratio. For example, as the nozzle upper ramp length or angle increased, some nozzles had higher performance at a Mach number of 0.90 because of the nozzle design pressure was the same as the operating pressure ratio. Thus, selection of the various nozzle geometric parameters should be based on the mission requirements of the aircraft. A combination of large upper ramp and large lower flap boattail angles produced greater nozzle drag coefficients at Mach number greater than 0.80, primarily from shock-induced separation on the lower flap of the nozzle. A static conditions, the convergent nozzle had high and nearly constant values of resultant thrust ratio over the entire range of nozzle pressure ratios tested. However, these nozzles had much lower aeropropulsive performance than the convergent-divergent nozzle at Mach number greater than 0.60. Capone, Francis J. and Re, Richard J. and Bare, E. Ann Langley Research Center NASA-TP-3240, L-17067, NAS 1.60:3240 RTOP 505-62-30-01...
Static Internal Performance of a Single Expansion Ramp Nozzle with Multiaxis Thrust Vectoring Capability
Author: Francis J. CaponeScientific and Technical Aerospace Reports
Author: NASA Scientific and Technical Publications
Author: 93-2400 - 93-2447
Author: The Aeronautical Journal
Author: AIAA 90-2024 - AIAA 90-2055
Author: Government Reports Announcements & Index
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1258
Book Description
Author: