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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Tests of NACA 65(216)-420 and 66(218)-420 airfoils at high speeds

Tests of NACA 65(216)-420 and 66(218)-420 airfoils at high speeds

Date: April 10, 1944
Creator: Anderson, Joseph L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Tests of nacelle-propeller combinations in various positions with reference to wings II : thick wing - various radial-engine cowlings - tractor propeller

Tests of nacelle-propeller combinations in various positions with reference to wings II : thick wing - various radial-engine cowlings - tractor propeller

Date: May 12, 1932
Creator: Wood, Donald H
Description: This report is the second of a series giving the results obtained in the 20-foot wind tunnel of the National Advisory Committee for Aeronautics on the interference drag and propulsive efficiency of nacelle-propeller-wing combinations. The first report gave the results of the test of a N.A.C.A. cowled air-cooled engine nacelle located in 21 positions with reference to a thick wing. The present report gives results of tests of a normal engine nacelle with several types of cowling and fairings in four of the positions with reference to the same wing. (author).
Contributing Partner: UNT Libraries Government Documents Department
Tests of nacelle-propeller combinations in various positions with reference to wings III : Clark y wing -  various radial-engine cowlings - tractor propeller

Tests of nacelle-propeller combinations in various positions with reference to wings III : Clark y wing - various radial-engine cowlings - tractor propeller

Date: January 1, 1933
Creator: Wood, Donald H
Description: This report is the third of a series giving the results obtained in the 20-foot wind tunnel on the interference drag, and propulsive efficiency of nacelle-propeller-wing combinations. The first report gave the results of the tests of an NACA cowled air-cooled engine nacelle with tractor propeller located in 21 positions with reference to a thick wing. The second report gave the results for several engine cowlings and nacelles with tractor propeller located in four positions with reference to same wing. The present report gives results of tests of the same nacelles and cowlings in the same positions with reference to a smaller wing of Clark y section. The lift, drag, and propulsive efficiency were determined at several angles of attack for each cowling and in each nacelle location.
Contributing Partner: UNT Libraries Government Documents Department
Tests of nacelle-propeller combinations in various positions with reference to wings IV : thick wing - various radial-engine cowlings - tandem propellers

Tests of nacelle-propeller combinations in various positions with reference to wings IV : thick wing - various radial-engine cowlings - tandem propellers

Date: January 1, 1935
Creator: Mchugh, James G
Description: This report is the fourth of a series giving the results obtained from wind tunnel tests to determine the interference lift and drag and propulsive efficiency of wing-nacelle-propeller combinations. Previous reports give the results of tests with tractor propellers with various forms of nacelles and engine cowlings. This report gives the results of tests of tandem arrangements of engines and propellers in 11 positions with reference to a thick wing.
Contributing Partner: UNT Libraries Government Documents Department
Tests of nacelle-propeller combinations in various positions with reference to wings. Part I : thick wing-N.A.C.A. cowled nacelle-tractor propeller

Tests of nacelle-propeller combinations in various positions with reference to wings. Part I : thick wing-N.A.C.A. cowled nacelle-tractor propeller

Date: January 1, 1933
Creator: Wood, Donald H
Description: This report gives the results in the 20-foot propeller research tunnel of the National Advisory Committee for Aeronautics on the interference drag and propulsive efficiency of a nacelle-propeller combination located in 21 positions with reference to a thick wing. The lift, drag, and propulsive efficiency were obtained at several angles of attack for each of the 21 locations. A net efficiency was derived for determining the over-all effectiveness of each nacelle location. Best results were obtained with the propeller about 25 per cent of the chord directly ahead of the leading edge. A location immediately above or below the wing near the leading edge was very poor.
Contributing Partner: UNT Libraries Government Documents Department
Tests of nacelle-propeller combinations in various positions with reference to wings V : Clark Y biplane cellule - NACA cowled nacelle - tractor propeller

Tests of nacelle-propeller combinations in various positions with reference to wings V : Clark Y biplane cellule - NACA cowled nacelle - tractor propeller

Date: January 1, 1935
Creator: Valentine, E Floyd
Description: This report is the fifth of a series giving the results obtained from wind tunnel tests on the interference drag and propulsive efficiency of nacelle-propeller-wing combinations. This report gives results of tests of an NACA cowled air-cooled engine nacelle with tractor propeller located in 12 positions with reference to a Clark Y biplane cellule.
Contributing Partner: UNT Libraries Government Documents Department
Tests of nacelle-propeller combinations in various positions with reference to wings  VI : wings and nacelles with pusher propeller

Tests of nacelle-propeller combinations in various positions with reference to wings VI : wings and nacelles with pusher propeller

Date: January 1, 1935
Creator: Wood, Donald H & Bioletti, Carlton
Description: This report is the sixth of a series giving wind tunnel tests results on the interference drag and propulsive efficiency of nacelle-propeller-wing combinations. The present report gives the results of tests of a radial-engine nacelle with pusher propeller in 17 positions with reference to a Clark Y wing; tests of the same nacelle and propeller in three positions with reference to a thick wing; and tests of a body and pusher propeller with the thick wing, simulating the case of a propeller driven by an extension shaft from an engine within the wing. Some preliminary tests were made on pusher nacelles alone.
Contributing Partner: UNT Libraries Government Documents Department
Tests of N-85, N-86 and N-87 airfoil sections in the 11-inch high speed wind tunnel

Tests of N-85, N-86 and N-87 airfoil sections in the 11-inch high speed wind tunnel

Date: September 1, 1938
Creator: Stack, John & Lindsey, W F
Description: Three airfoils, the N-85, the N-86, and the N-87, were tested at the request of the Bureau of Aeronautics, Navy Department, to determine the suitability of these sections for use as propeller-blade sections. Further tests of the NACA 0009-64 airfoil were also made to measure the aerodynamic effect of thickening the trailing edge in accordance with current propeller practice. The N-86 and the N-87 airfoils appear to be nearly equivalent aerodynamically and both are superior to the N-85 airfoil. Comparison of those airfoils with the previously developed NACA 2409-34 airfoils indicate that the NACA 2409-34 is superior, particularly at high speeds. Thickening the trailing edge appears to have a detrimental effect, although the effect may be small if the trailing-edge radius is less than 0.5 percent of the cord. The N-86 and the N-87 airfoils appear to be nearly equivalent.
Contributing Partner: UNT Libraries Government Documents Department
Tests of oil scraper piston ring and piston fitted with oil drain holes

Tests of oil scraper piston ring and piston fitted with oil drain holes

Date: August 1, 1922
Creator: Mcdewell, H S
Description: Tests were conducted to determine whether or not a properly located and properly designed oil scraper piston ring, installed on a piston provided with oil drain holes of sufficient area, would prevent the excessive oiling of the Liberty engine, particularly with the engine running at idling speed with full oil pressure. Results showed that excessive oiling was in fact prevented. It is strongly recommended that scraper rings and pistons be adopted for aircraft engines.
Contributing Partner: UNT Libraries Government Documents Department
Tests of Permissible Explosives

Tests of Permissible Explosives

Date: 1913
Creator: Hall, Clarence & Howell, Spencer P.
Description: None
Contributing Partner: UNT Libraries Government Documents Department