UNT Libraries Government Documents Department - 9 Matching Results

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Experimental investigation of pressure fluctuations in 3.6 inch ram jet at Mach number 1.92

Description: Report presenting an experimental study of the pressure fluctuations at the combustion-chamber inlets of a ramjet operating a Mach number of 1.92 in the supersonic tunnel. Results are presented for two burner configurations of different operating characteristics to indicate trends in pressure magnitude, frequency, and wave form. Results regarding the perforated conical flame holder, regenerative-type burner, and diffuser total-pressure recovery are provided.
Date: October 13, 1949
Creator: Connors, James F. & Schroeder, Albert H.
Item Type: Refine your search to only Report
open access

Preliminary Results of NACA Transonic Flights of the XS-1 Airplane With a 10-Percent-Thick Wing and 8-Percent-Thick Horizontal Tail

Description: Report presenting transonic speed testing utilizing a rocket-powered Bell XS-1 airplane with 10-percent-thick wing and 8-percent-thick horizontal tail. Information is provided for flights up to Mach number 1.06 and altitudes of about 40,000 feet. Results regarding the variation of control-surface positions and forces and sideslip angle with Mach number, time history, rudder effectiveness, and lateral oscillations are provided.
Date: October 13, 1948
Creator: Drake, Hubert M.; Goodman, Harold R. & Hoover, Herbert H.
Item Type: Refine your search to only Report
open access

Investigation of ignition characteristics of AN-F-32 and two AN-F-58a fuels in single can-type turbojet combustor

Description: Ignition characteristics of AN-F-32 and two AN-F-58a fuels were studied in a single can-type turbojet combustor under air-flow conditions representing engine speeds of 1600, 2500, and 4000 rpm, altitudes from sea level to 30,000 feet, ambient temperatures at sea level from 90 degrees to minus 36 degrees F, and flight Mach numbers of 0 and 0.6. Critical fuel-flow rates for ignition increased with increase in preignition engine speed, with increase in altitude, or with decrease in sea-level ambie… more
Date: October 13, 1950
Creator: Rayle, Warren D. & Douglass, Howard W.
Item Type: Refine your search to only Report
open access

Preliminary analysis of three cycles for nuclear propulsion of aircraft

Description: A preliminary study was made of the feasibility of three cycles for nuclear propulsion of aircraft: a direct-air-turbojet, a binary liquid-metal turbojet, and a helium compressor jet. All three cycles appeared feasible for flight at a Mach number of 0.9 and altitudes up to 50,000 feet; the liquid-metal cycle appeared feasible for flight at a Mach number of 1.5. The air and helium cycles resulted in heavier aircraft than did the liquid-metal cycle, particularly at a Mach number of 1.5. The relat… more
Date: October 13, 1950
Creator: Humble, L. V.; Wachtl, W. W. & Doyle, R. B.
Item Type: Refine your search to only Report
open access

Preliminary Investigation of Several Root Designs for Cermet Turbine Blades in Turbojet Engine 2: Root Design Alterations

Description: Report presenting engine evaluation tests of twelve sets of cermet turbine blades. The first five runs were similar to previous engine tests, but the remaining ones were modified based on information gained during the first runs.
Date: October 13, 1953
Creator: Meyer, A. J., Jr.; Deutsch, G. C. & Morgan, W. C.
Item Type: Refine your search to only Report
open access

Supplementary Free-Spinning-Tunnel Tests of a 1/16-Scale Model of the McDonnell XB-85 Airplane Equipped with a Conventional-Tail Arrangement

Description: "Spin tests have been conducted in the Langley free-spinning tunnel on a 1/16-scale model of the McDonnell XP-85 airplane with the normal X-tail replaced with a short-coupled conventional tail arrangement. The effect of the conventional tail arrangement and the effects of various modifications upon the spin and recovery characteristics of the model were determined. The results of the tests indicated that installation of the conventional tail arrangement will not provide satisfactory recoveries … more
Date: October 13, 1947
Creator: Klinar, Walter J.
Item Type: Refine your search to only Report
open access

Cooling of gas turbines 9: cooling effects from use of ceramic coatings on water-cooled turbine blades

Description: From Summary: "The hottest part of a turbine blade is likely to be the trailing portion. When the blades are cooled and when water is used as the coolant, the cooling passages are placed as close as possible to the trailing edge in order to cool this portion. In some cases, however, the trailing portion of the blade is so narrow, for aerodynamic reasons, that water passages cannot be located very near the trailing edge. Because ceramic coatings offer the possibility of protection for the traili… more
Date: October 13, 1948
Creator: Brown, W. Byron & Livingood, John N. B.
Item Type: Refine your search to only Report
open access

Investigation of Flow Fluctuations at the Exit of a Radial-Flow Centrifugal Impeller

Description: Memorandum presenting surveys made at the exit of a radial-flow centrifugal impeller to obtain instantaneous values of velocity from blade to blade and at various positions between the front and rear diffuser walls. Surveys were also made at several radial stations midway between the walls of the diffuser to observe the radial change in the flow pattern through the vaneless diffuser. Results regarding typical trace, hub-shroud surveys, and radial surveys are provided.
Date: October 13, 1952
Creator: Hamrick, Joseph T. & Mizisin, John
Item Type: Refine your search to only Report
open access

Stability and Control Flight Tests of a Vertically Rising Airplane Model Similar to the Lockheed XFV-1 Airplane

Description: From Summary: "This paper presents the results of an investigation of the dynamic stability and controllability of a model which approximately represents the Lockheed XFV-1 airplane to a 1/8 scale. The investigation consisted of hovering flights in still air at a considerable height above the ground, hovering flights very close to the ground, vertical take-offs and landings, flights through the transition range from hovering to normal forward flight, and sideways translational flights."
Date: October 13, 1954
Creator: Kirby, Robert H.
Item Type: Refine your search to only Report
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