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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NACA Research Memorandums
 Collection: Technical Report Archive and Image Library
Chemical and physical properties of a boron-carbon-hydrogen fuel z-244 /naca 55z8/

Chemical and physical properties of a boron-carbon-hydrogen fuel z-244 /naca 55z8/

Date: March 27, 1956
Creator: Buddie, M.; Cramer, P. M. & Spakowski, A. E.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Experimental Behavior of Pentaborane-Air Combustion Products During Expansion in a Convergent Divergent Nozzle

Experimental Behavior of Pentaborane-Air Combustion Products During Expansion in a Convergent Divergent Nozzle

Date: February 18, 1958
Creator: Branstetter, J. R. & Setze, P. C.
Description: In order to evaluate the post combustion behavior of boric oxide, pentaborane-air mixtures, burned to completion at a combustor pressure of 3 atmospheres, were expanded through a 7.1-inch-long convergent-divergent nozzle having a 4-inch-diameter throat and an exit-to-throat area ratio of 1.68. The experimentally determined thrust performance was in good agreement with the ideal equilibrium performance at stagnation temperatures of 3300 deg R and lower. The boric oxide vapor at the combustor exit required about 400 F deg supercooling before any condensed phase was observed. For a given thrust, fuel consumption was as much as 20 percent greater than predicted from vapor-pressure data for combustor outlet temperatures i n the vicinity of 3600 deg R. A similar result could be expected in full-scale engines, since the test combustor provided an unusually long dwell time and a highly turbulent environment. During the expansion process, the vapor (when present) did not condense to the extent predicted for an equilibrium expansion process. Moreover, condensation was observed only i n the form of small, abrupt phase changes i n the subsonic flow near the throat. Friction, due to liquid boric oxide films on the nozzle surfaces, was negligible when the surface temperature was above 800 ...
Contributing Partner: UNT Libraries Government Documents Department
Preliminary report on experimental investigation of engine dynamics and controls for a 48-inch ramjet engine

Preliminary report on experimental investigation of engine dynamics and controls for a 48-inch ramjet engine

Date: March 16, 1956
Creator: Dunbar, W. R.; Hart, C. E. & Vasu, G.
Description: Experimental investigation of engine dynamics and controls for 48-inch ramjet engine in free jet facility at Mach number 2.76 and altitudes 68,000 to 82,000 feet.
Contributing Partner: UNT Libraries Government Documents Department
Surge-inception study in a two-spool turbojet engine

Surge-inception study in a two-spool turbojet engine

Date: January 1, 1956
Creator: Lubick, R. J.; Saari, M. J. & Wallner, L. E.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Preliminary investigation of reflections of  oblique waves from a porous wall

Preliminary investigation of reflections of oblique waves from a porous wall

Date: November 9, 1950
Creator: Davis, D. D., Jr. & Wood, G. P.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Comparison of various heat exchangers for liquid-metal nuclear turbojet over range of flight and operating conditions

Comparison of various heat exchangers for liquid-metal nuclear turbojet over range of flight and operating conditions

Date: April 28, 1958
Creator: Ragsdale, R. G.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Measurement and analysis of turbulent flow containing periodic flow fluctuations

Measurement and analysis of turbulent flow containing periodic flow fluctuations

Date: August 19, 1953
Creator: Mickelsen, W. R. & Laurence, J. C.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of rocket, ramjet, and turbojet engines for supersonic propulsion of long-range missiles.  3:  Ramjet engine performance

Analysis of rocket, ramjet, and turbojet engines for supersonic propulsion of long-range missiles. 3: Ramjet engine performance

Date: August 5, 1954
Creator: Weber, R. J. & Luidens, R. W.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some notes on the probable damage to an intercontinental-ballistic-missile warhead following puncture of the heat shield

Some notes on the probable damage to an intercontinental-ballistic-missile warhead following puncture of the heat shield

Date: September 28, 1958
Creator: Strass, H. K. & Goodman, V. M.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Chemical and physical properties of modified Hi-Cal-2

Chemical and physical properties of modified Hi-Cal-2

Date: December 1, 1955
Creator: Allen, H., Jr.; Mcdonald, G. E. & Pusanski, B. J.
Description: None
Contributing Partner: UNT Libraries Government Documents Department