From Introduction: "The purpose of this analysis was to investigate the use of function of intake-manifold temperature and pressure, exhaust back pressure, and engine speed in place of a ventri as a means of measuring engine air consumption and to determine if this function is suitable for automatic mixture control."

From Introduction: "The purpose of this analysis was to investigate the use of a function of intake-manifold pressure, exhaust back pressure, intake manifold temperature, and engine speed in place of a venturi as a means of measuring engine air consumption and to determine if this function is suitable for automatic mixture control."

From Introduction: "Thrust augmentation of an axial-flow-type turbojet engine by burning fuel in the tail pipe is discussed in references 1 to 3. Thrust augmentation of the same turbojet engine by water injection at the compressor inlet is reported in reference 4."

From Introduction: "The research program included clean-up tests (unpublished data) and stability and control tests (reference 1) made in the NACA Langley full-scale tunnel. An investigation of the aerodynamic characteristics of the power-plant installation in the Cleveland altitude wind tunnel is discussed in this report."

From Introduction: "The difficulties experienced in cooling the exhaust-valve seats of the rear-row cylinders have been overcome to a considerable extent by improving the mixture distribution through application of the injection impeller (reference 1) and by augmenting the flow of cooling air to the critical baffles (reference 2). Flight tests of this airplane (reference 3) indicated that the temperatures of exhaust-valve seats on rear-row cylinders were markedly lowered by these modifications and that airplane range, altitude, and gross weight previously limited by these temperatures could be greatly increased."

From Summary: "A theoretical analysis is presented that permits estimation of the changes in piston-temperature distribution induced by variations in the crown thickness, the ring-groove-pad thickness, and the undercrown surface heat-transfer coefficient. The analysis consists of the calculation of operating temperatures at various points in the piston body on the basis of the experimentally determined surface heat-transfer coefficients and boundary-region temperatures, as well as arbitrarily selected surface coefficients."

From Introduction: "Experimental investigations (reference 1) have shown that in some cases the thrust can be more than doubled by means of tail-pipe burning. A comparison is made of a standard turbojet engine, whose thrust is augmented by tail-pipe burning, and a ram-jet engine. The performance characteristics for the ram-jet engine were computed entirely from theoretical considerations and on the assumption that the burner-inlet velocity was constant."

"The data presented in this report are part of a general program to determine the effects of xylidines on the knock-limited performance of currently used aviation fuels" (p. 2).

From Introduction: "The results of varying only Reynolds number for several equivalent tip speeds are presented and probable reasons for the apparent variation of adiabatic efficiency with inlet temperature are discussed."

A special circular discussing the various ways that the organization has assisted in the World War II efforts for the past several years and asking that they continue to adjust their work until the war is over.

Check written by D. W. Kempner through The United States National Bank of Galveston to Time Magazine for $7.50.

Check written by D. W. Kempner through The United States National Bank of Galveston to Time Magazine for $10.00.

Photograph of S/Sgt. Clarence Alexis, viewed from his left side, standing in front of a piece of equipment during a visit to the Yoder Company plant, holding up a microphone. Alexis is wearing a military uniform and several other uniformed men are visible on the left side of the image, in front of several workers who appear to be watching the speech. A woman's face is partially visible on the right edge of the image.

Aeronautical map of Cleveland, Ohio and its surrounding region, showing cities, topographical features, radio frequency ranges and various aeronautical symbols for flight training and navigation. Scale 1:500,000.

One of the most impressive railroad terminals in the United States is the Cleveland Union Station. The main entrance to the station is integral with the terminal group of buildings facing the Public Square. These buildings include the Hotel Cleveland, Medical Arts Builder's Exchange Building, Midland Bank Building, the Higbee Company's Department Store Building and the 52-story Terminal Tower.

Newspaper clipping with articles about the New York Herald Tribune participating in air races, the death of Jack Woolams, Senator Carl Hatch's opposition to bomb tests, and more.

Newspaper clipping featuring an article about the National Air Races and the annual convention of the Ninety-Nines. A photograph of Emma Coulter Ware and former WASP Clara Jo Marsh standing next to a small airplane accompanies the article.

Bimonthly newsletter published for employees of the Convair Division in Fort Worth containing work-related information, updates about employees, and other news.

Photograph of factory workers and visiting soldiers at the Yoder Company plant during a speech by a uniformed soldier, visible from the neck down at the right side of the image, holding a microphone. Four uniformed soldiers are grouped nearby, tentatively identified as Leo Crivello (seated, at left, looking at his hands), Harry Gaby (center) and Louis Cocozza (right) who are standing, and a fourth man who is seated in front of them, facing away. Factory workers are standing behind them, looking toward the camera or watching the man who is speaking, including several who are wearing suits and others wearing work aprons.

Newsletter for the employees of The Yoder Company in Cleveland, Ohio, including news, events, and other updates of interest to workers. This issue includes a feature about a visit from soldiers sent by General Eisenhower to tour ammunition manufacturers. This copy was sent to Pfc. H. T. Gaby, who was part of the tour, in an envelope that has the company logo on the front and and illustration of soldiers jumping out of a truck on the back.

Photograph of a man wearing a dark-colored military uniform, tentatively identified as Capt. Gordon Sympson standing with his hands in his pockets between two unidentified men wearing dark-colored suits. They are standing near equipment, visible at left, and are all looking toward the left side of the image. Another man in a military uniform is partially visible behind Sympson, looking toward the flor.

Photograph of Captain Gordon Sympson, viewed from his left side, standing in front of a piece of equipment during a visit to the Yoder Company plant, holding up a microphone. Alexis is wearing a military uniform and several other uniformed men are seated on the left side of the image, in front of several workers who appear to be watching the speech. Part of the factory structure and catwalks are visible in the background.

Photograph of a group of uniformed soldiers standing in two lines during a visit to the Yoder Company plant. In the center of the image, Capt. Gordon Sympson (left) is standing in front of the group with his left arm around Sgt. Jack Allen while he shakes hands with an unidentified man wearing a dark-colored suit (right). The other soldiers are tentatively identified (left to right) as: back row, S/Sgt. Clarence Alexis, Pfc. Leo Crivello, T/5th Lars Larson; front row, Pfc. Harry Gaby, Cpl. Myles Gates, and Pfc. Louis Cocozza.

Group portrait of uniformed soldiers during a visit to the Yoder Company plant, posing together in several lines. They are tentative identified as: Capt. Gordon Sympson (left), Pfc. Harry Gaby (back left), Pfc. Leo Crivello (back center), and left-to-right, S/Sgt. Clarence Alexis, Sgt. Jack Allen, Cpl. Myles Gates, Pfc. Louis Cocozza, and T/5th Lars Larson. A man wearing a suit is partially visible at the far right of the image.