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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NACA Wartime Reports
 Collection: National Advisory Committee for Aeronautics Collection
Tests of air valves for intermittent-jet engines at speeds of 20 and 25 cycles per second

Tests of air valves for intermittent-jet engines at speeds of 20 and 25 cycles per second

Date: May 1, 1954
Creator: Mccready, Robert J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Kinetic temperature of wet surfaces : a method of calculating the amount of alcohol required to prevent ice, and the derivation of the psychometric equation

Kinetic temperature of wet surfaces : a method of calculating the amount of alcohol required to prevent ice, and the derivation of the psychometric equation

Date: January 1, 1953
Creator: Hardy, J K
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Estimation of F-3 and F-4 knock-limited performance ratings for ternary and quaternary blends containing triptane or other high-antiknock aviation-fuel blending agents

Estimation of F-3 and F-4 knock-limited performance ratings for ternary and quaternary blends containing triptane or other high-antiknock aviation-fuel blending agents

Date: January 1, 1948
Creator: Barnett, Henry C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Performance Charts for a Turbojet System

Performance Charts for a Turbojet System

Date: June 1, 1947
Creator: Karp, Irving M.
Description: Convenient charts are presented for computing the thrust, fuel consumption, and other performance values of a turbojet system. These charts take into account the effects of ram pressure, compressor pressure ratio, ratio of combustion-chamber-outlet temperature to atmospheric temperature, compressor efficiency, turbine efficiency, combustion efficiency, discharge-nozzle coefficient, losses in total pressure in the inlet to the jet-propulsion unit and in the combustion chamber, and variation in specific heats with temperature. The principal performance charts show clearly the effects of the primary variables and correction charts provide the effects of the secondary variables. The performance of illustrative cases of turbojet systems is given. It is shown that maximum thrust per unit mass rate of air flow occurs at a lower compressor pressure ratio than minimum specific fuel consumption. The thrust per unit mass rate of air flow increases as the combustion-chamber discharge temperature increases. For minimum specific fuel consumption, however, an optimum combustion-chamber discharge temperature exists, which in some cases may be less than the limiting temperature imposed by the strength temperature characteristics of present materials.
Contributing Partner: UNT Libraries Government Documents Department
Air-flow and performance characteristics of engine-stage supercharger of a double-row radial aircraft engine II : effect of design variables

Air-flow and performance characteristics of engine-stage supercharger of a double-row radial aircraft engine II : effect of design variables

Date: August 1, 1946
Creator: Dugan, Paul D.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An Experimental Investigation of Flow Conditions in the Vicinity of an NACA D(Sub S)-Type Cowling

An Experimental Investigation of Flow Conditions in the Vicinity of an NACA D(Sub S)-Type Cowling

Date: August 1, 1946
Creator: Bryant, Rosemary P. & Boswinkle, Robert W.
Description: Data are presented of the flow conditions in the vicinity of an NACA D sub S -type cowling. Tests were made of a 1/2 scale-nacelle model at inlet-velocity ratios ranging from 0.23 to 1.02 and angles of attack from 6 deg to 10 deg. The velocity and direction of flow in the vertical plane of symmetry of the cowling were determined from orifices and tufts installed on a board aligned with the flow. Diagrams showing velocity ratio contours and lines of constant flow angles are given.
Contributing Partner: UNT Libraries Government Documents Department
Wind-tunnel tests and analysis of three 10-foot-diameter three-blade tractor propellers differing in pitch distribution

Wind-tunnel tests and analysis of three 10-foot-diameter three-blade tractor propellers differing in pitch distribution

Date: August 1, 1946
Creator: Gilman, Jean, Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics of several modifications of a 0.45-scale model of the vertical tail of the Curtiss XP-62 airplane

Aerodynamic characteristics of several modifications of a 0.45-scale model of the vertical tail of the Curtiss XP-62 airplane

Date: July 1, 1946
Creator: Liddell, Robert B.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analysis of the indications of the University of Chicago airborne turbulence indicator in gusty air

An analysis of the indications of the University of Chicago airborne turbulence indicator in gusty air

Date: July 1, 1946
Creator: Pratt, K G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of V-G Records from the SNB-1 Airplane

Analysis of V-G Records from the SNB-1 Airplane

Date: July 1, 1946
Creator: Meadows, May T. & Walker, Walter G.
Description: Availability data obtained on SNB-1 trainer-class airplanes were analyzed and results presented as flight envelopes which predict occurrences of large values of air speed and acceleration. Comparison is made with SNJ-4 trainer-class airplane data analyzed by the same method. It is concluded that flight envelopes are satisfactory; that the two types show large differences in flight loads and speeds experience; and that SNB-1 will seldom, if ever, exceed design limit load factor and restricted speed, which SNJ-4 can be expected to exceed design-limit load factor and restricted speed in a very small number of flight hours.
Contributing Partner: UNT Libraries Government Documents Department
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