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NACA investigation of a jet-propulsion system applicable to flight

Description: Following a brief history of the NACA investigation of jet propulsion, a discussion is given of the general investigation and analysis leading to the construction of the jet-propulsion ground-test mock-up. The results of burning experiments and of test measurements designed to allow quantitative flight performance predictions of the system are presented and correlated with calculations. These calculations are then used to determine the performance of the system on the ground and in the air at various speeds and altitudes under various burning conditions. The application of the system to an experimental airplane is described and some performance predictions for this airplane are made.
Date: 1944
Creator: Ellis, Macon C., Jr. & Brown, Clinton E.
Partner: UNT Libraries Government Documents Department

Some lift and drag measurements of a representative bomber nacelle on a low-drag wing II

Description: From Summary: "Tests of a second representative bomber nacelle on a low-drag wing at a large value of the Reynolds number were made in the NACA two-dimensional low-turbulence pressure tunnel. Results show the drag and interference of the nacelle on the low-drag wing to be small."
Date: September 1942
Creator: Ellis, Macon C., Jr.
Partner: UNT Libraries Government Documents Department

Effects of a typical nacelle on the characteristics of a thick low-drag airfoil critically affected by leading-edge roughness

Description: Report presenting testing to study the effects of a typical nacelle on the characteristics of a thick low-drag airfoil that was shown to be subject to separation difficulties due to leading edge roughness. This testing confirmed the results of previous tests which indicated that the airfoil was unconservative with respect to separation difficulties. Results regarding the internal-flow measurements and corresponding drag increments, external drag, leading-edge roughness and nacelle combination, and section lift comparisons are provided.
Date: April 1943
Creator: Ellis, Macon C., Jr.
Partner: UNT Libraries Government Documents Department

Preliminary tests at supersonic speeds of triangular and swept-back wings

Description: Report presenting testing of a series of thin, triangular plan-form wings, including eight triangular wings of vertex angles and three swept-back wings with circular-arc sections. Results regarding lift, center of pressure, and ideal operation of different types of wings are provided.
Date: February 21, 1947
Creator: Ellis, Macon C., Jr. & Hasel, Lowell E.
Partner: UNT Libraries Government Documents Department

Supersonic-tunnel tests of two supersonic airplane model configurations

Description: Report presenting supersonic-tunnel tests of two models of similar supersonic airplane configurations at Mach numbers of 1.55, 1.90, and 2.32 to determine values of the drag, lift, pitching moment, yawing moment, and side force. The models were similar except for the vertical wing location relative to the body axis and horizontal tail; one had a high wing and one had a low wing. Results regarding the precision of data, Reynolds numbers of tests, results at the different Mach numbers, and Schileren photographs are provided.
Date: December 31, 1947
Creator: Ellis, Macon C., Jr.; Hasel, Lowell E. & Grigsby, Carl E.
Partner: UNT Libraries Government Documents Department

NACA Investigation of a Jet-Propulsion System Applicable to Flight

Description: "Following a brief history of the NACA investigation of jet propulsion, a discussion is given of the general investigation and analysis leading to the construction of the jet-propulsion ground-test mock-up. The results of burning experiments and of test measurements designed to allow quantitative flight performance predictions of the system are presented and correlated with calculations. These calculations are then used to determine the performance of the system on the ground and in the air at various speeds and altitudes under various burning conditions. The application of the system to an experimental airplane is described and some performance predictions for this airplane are made" (p. 1).
Date: September 17, 1943
Creator: Ellis, Macon C., Jr. & Brown, Clinton E.
Partner: UNT Libraries Government Documents Department