Annular supersonic decelerator or drogue Patent
Bluff-shaped annular configuration for supersonic decelerator for reentry vehicles
Connors, J. F.↗
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Results for “annular”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Tests of a full-scale annular ram-induction combustor for a Mach 3 cruise turbojet engine
Full-scale annular ram-induction combustor tests for Mach 3 cruise turbojet engine
Perkins, P. J.↗
Pressure wave propagation through annular and mist flows
One dimensional models of pressure wave propagation through annular and mist flows
Henry, R. E.↗
Fluid behavior in a longitudinally excited, cylindrical task of arbitrary sector-annular cross section
Fluid motion in cylindrical tank with arbitrary sector annular cross section subjected to harmonic longitudinal excitation
Bauer, H. F.↗
Analytical study of colloid annular thrusters
Colloid annular thrustor performance, using low mass flow rate data and space charge formulas
Mahoney, J. F.↗
Experimental study of colloid annular thrusters
Colloid annular thrustors performance tests in vacuum chamber with LN cooled liner, using high speed analog to digital system to acquire time of flight /TOF/ data
Daley, H. L.↗
Experimental investigation in an annular cascade sector of highly loaded turbine stator blading. 5 - Performance of two tangential jet blades
Testing low reaction jet turbine stator blades in six-blade annular cascade
Bettner, J. L.↗
A study of high frequency nonlinear combustion instability in baffled annular liquid propellant rocket motors. Volume 2 - A user manual for computer programs TRDL and TRDPLT Final report, 25 Aug. 1969 - 25 Sep. 1970
User manual for computer programs to determine high frequency instability in baffled annular liquid propellant rocket engines - Vol. 2
Burstein, S. Z.↗
A study of high frequency nonlinear combustion instability in baffled annular liquid propellant rocket motors, volume 1 Final report, 25 Aug. 1969 - 25 Sep. 1970
High frequency nonlinear combustion instability in baffled annular liquid propellant rocket engines - Vol. 1
Burstein, S. Z.↗
Full scale tests of a short length, double annular ram induction turbojet combustor for supersonic flight
Performance tests and characteristics of short length, double annular ram induction turbojet combustion chambers for supersonic flight
Perkins, P. J.↗
Self-repeating plasma generator having communicating annular and linear arc discharge passages Patent
Direct current powered self repeating plasma accelerator with interconnected annular and linear discharge channels
Sabol, A. P.↗
Annular slit colloid thruster research and development
Research in optimization of performance, and performance characteristics of annular slit colloid thruster
Burton, W. A.↗
Comparison of simplex and dual-orifice fuel nozzles with ambient and heated fuel in an annular turbojet combustor
Performance of simplex and dual orifice fuel nozzles with ambient and heated fuel in annular turbojet combustor
Perkins, P. J.↗
Pressure wave propagation through annular and mist flows
Pressure wave propagation through annular and mist flow patterns, noting virtual mass effects in interphase momentum transport of rarefaction and compression waves
Henry, R. E.↗
Annular objective apertures improve resolution of electron microscopes
Hollow-cone illumination techniques, using an annular objective aperture located behind back focal plane of objective lens, increase image contrast and minimize chromatic aberrations.
Heinemann, K.↗
Flight velocity influence on jet noise of conical ejector, annular plug and segmented suppressor nozzles
An F106 aircraft with a J85-13 engine was used for static and flight acoustic and aerodynamic tests of a conical ejector, an unsuppressed annular plug, and three segmented suppressor nozzles. Static 100 ft. arc data, corrected for influences other than jet noise, were extrapolated to a 300 ft. sideline for comparison to 300 ft. altitude flyover data at M = 0.4. Data at engine speeds of 80 to 100% (max dry) static and 88 to 100% flight are presented. Flight velocity influence on noise is shown on peak OASPL and PNL, PNL directivity, EPNL and chosen spectra. Peak OASPL and PNL plus EPNL suppression levels are included showing slightly lower flight than static peak PNL suppression but greater EPNL than peak PNL suppression. Aerodynamic performance was as anticipated and closely matched model work for the 32-spoke nozzle.
Brausch, J. F.↗
Factors affecting altitude relight performance of a double-annular ram-induction combustor
A test program was conducted to evaluate the altitude relight capabilities of a short-length, double-annular, ram-induction combustor which was designed for Mach 3 cruise operation. The use of distorted inlet-air flow profiles was tried to evaluate their effect on the relight performance. No significant improvement in altitude relight performance was obtained with this approach. A study was also made to determine the effects of the reference Mach number, the fuel temperature, and the fuel volatility (ASTM-A1 against JP-4) on the altitude relight performance. Decreasing the reference Mach number, increasing the fuel temperature, and using more volatile fuel all decrease the combustor pressure necessary for relight.
Schultz, D. F.↗
Finite stretching of an annular plate.
The problem of the finite stretching of an annular plate which is bonded to a rigid inclusion at its inner edge is considered. The material is assumed to be isotropic and incompressible with a Mooney-type constitutive law. It is shown that the inclusion of the effect of the transverse normal strain leads to a rapid variation in thickness which is confined to a narrow edge zone. The explicit solutions to the boundary layer equations, which govern the behavior of the plate near the edges, are presented.
Biricikoglu, V.↗