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Factors in the design of centrifugal type injection valves for oil engines (open access)

Factors in the design of centrifugal type injection valves for oil engines

This research was undertaken in connection with a general study of the application of the fuel injection engine to aircraft. The purpose of the investigation was to determine the effect of four important factors in the design of a centrifugal type automatic injection valve on the penetration, general shape, and distribution of oil sprays. The general method employed was to record the development of single sprays by means of special high-speed photographic apparatus capable of taking 25 consecutive pictures of the moving spray at a rate of 4,000 per second. Investigations were made concerning the effects on spray characteristics, of the helix angle of helical grooves, the ratio of the cross-sectional area of the orifice to that of the grooves, the ratio of orifice length to diameter, and the position of the seat. Maximum spray penetration was obtained with a ratio of orifice length to diameter of about 1.5. Slightly greater penetration was obtained with the seat directly before the orifice.
Date: January 27, 1927
Creator: Joachim, W. F. & Beardsley, E. G.
Object Type: Report
System: The UNT Digital Library
Pressure Distribution Over a Rectangular Monoplane Wing Model Up to 90 Degree Angle of Attack (open access)

Pressure Distribution Over a Rectangular Monoplane Wing Model Up to 90 Degree Angle of Attack

"The pressure distribution tests described in this report, covering angles of attack up to 90 degrees, were made on a rectangular monoplane wing model in the atmospheric wind tunnel of the Langley Memorial Aeronautical Laboratory. These tests indicate that a rectangular wing, by reason of its large tip loads, is uneconomical aerodynamically and structurally, has pronounced lateral instability above maximum lift, and is not adaptable to accurate calculation based on the classical wing theory" (p. 197).
Date: October 27, 1927
Creator: Knight, Montgomery & Loeser, Oscar, Jr.
Object Type: Report
System: The UNT Digital Library
The Aspermont Star (Aspermont, Tex.), Vol. 30, No. 17, Ed. 1 Thursday, October 27, 1927 (open access)

The Aspermont Star (Aspermont, Tex.), Vol. 30, No. 17, Ed. 1 Thursday, October 27, 1927

Weekly newspaper from Aspermont, Texas that includes local, state and national news along with extensive advertising.
Date: October 27, 1927
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Aspermont Star (Aspermont, Tex.), Vol. 29, No. 30, Ed. 1 Thursday, January 27, 1927 (open access)

The Aspermont Star (Aspermont, Tex.), Vol. 29, No. 30, Ed. 1 Thursday, January 27, 1927

Weekly newspaper from Aspermont, Texas that includes local, state and national news along with extensive advertising.
Date: January 27, 1927
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 74, No. 22, Ed. 1 Thursday, October 27, 1927 (open access)

The Bastrop Advertiser (Bastrop, Tex.), Vol. 74, No. 22, Ed. 1 Thursday, October 27, 1927

Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date: October 27, 1927
Creator: Schaefer, H. A.
Object Type: Newspaper
System: The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 73, No. 35, Ed. 1 Thursday, January 27, 1927 (open access)

The Bastrop Advertiser (Bastrop, Tex.), Vol. 73, No. 35, Ed. 1 Thursday, January 27, 1927

Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date: January 27, 1927
Creator: Schaefer, H. A.
Object Type: Newspaper
System: The Portal to Texas History
Borger Daily Herald (Borger, Tex.), Vol. 1, No. 263, Ed. 1 Tuesday, September 27, 1927 (open access)

Borger Daily Herald (Borger, Tex.), Vol. 1, No. 263, Ed. 1 Tuesday, September 27, 1927

Daily newspaper from Borger, Texas that includes local, state and national news along with extensive advertising.
Date: September 27, 1927
Creator: Caufield, T. E.
Object Type: Newspaper
System: The Portal to Texas History
Borger Daily Herald (Borger, Tex.), Vol. 2, No. 29, Ed. 1 Tuesday, December 27, 1927 (open access)

Borger Daily Herald (Borger, Tex.), Vol. 2, No. 29, Ed. 1 Tuesday, December 27, 1927

Daily newspaper from Borger, Texas that includes local, state and national news along with extensive advertising.
Date: December 27, 1927
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Borger Daily Herald (Borger, Tex.), Vol. 1, No. 289, Ed. 1 Thursday, October 27, 1927 (open access)

Borger Daily Herald (Borger, Tex.), Vol. 1, No. 289, Ed. 1 Thursday, October 27, 1927

Daily newspaper from Borger, Texas that includes local, state and national news along with extensive advertising.
Date: October 27, 1927
Creator: Caufield, T. E.
Object Type: Newspaper
System: The Portal to Texas History
Borger Daily Herald (Borger, Tex.), Vol. 2, No. 4, Ed. 1 Sunday, November 27, 1927 (open access)

Borger Daily Herald (Borger, Tex.), Vol. 2, No. 4, Ed. 1 Sunday, November 27, 1927

Daily newspaper from Borger, Texas that includes local, state and national news along with extensive advertising.
Date: November 27, 1927
Creator: Welsch, Chopsie S.
Object Type: Newspaper
System: The Portal to Texas History
The Alto Herald (Alto, Tex.), Vol. 27, No. 29, Ed. 1 Thursday, October 27, 1927 (open access)

The Alto Herald (Alto, Tex.), Vol. 27, No. 29, Ed. 1 Thursday, October 27, 1927

Weekly newspaper from Alto, Texas that includes local, state and national news along with extensive advertising.
Date: October 27, 1927
Creator: Weimar, F. L.
Object Type: Newspaper
System: The Portal to Texas History
The Alto Herald (Alto, Tex.), Vol. 26, No. 42, Ed. 1 Thursday, January 27, 1927 (open access)

The Alto Herald (Alto, Tex.), Vol. 26, No. 42, Ed. 1 Thursday, January 27, 1927

Weekly newspaper from Alto, Texas that includes local, state and national news along with extensive advertising.
Date: January 27, 1927
Creator: Weimar, F. L.
Object Type: Newspaper
System: The Portal to Texas History
The Crosbyton Review. (Crosbyton, Tex.), Vol. 19, No. 19, Ed. 1 Friday, May 27, 1927 (open access)

The Crosbyton Review. (Crosbyton, Tex.), Vol. 19, No. 19, Ed. 1 Friday, May 27, 1927

Weekly newspaper from Crosbyton, Texas that includes local, state and national news along with advertising.
Date: May 27, 1927
Creator: Curry, W. M.
Object Type: Newspaper
System: The Portal to Texas History
The Mineola Monitor (Mineola, Tex.), Vol. 54, No. 46, Ed. 1 Thursday, January 27, 1927 (open access)

The Mineola Monitor (Mineola, Tex.), Vol. 54, No. 46, Ed. 1 Thursday, January 27, 1927

Weekly newspaper from Mineola, Texas that includes local, state and national news along with advertising. Also includes The Yellow Jacket, Mineola High School's weekly student newspaper, during the school year.
Date: January 27, 1927
Creator: Carraway, R. H.
Object Type: Newspaper
System: The Portal to Texas History
The Mineola Monitor (Mineola, Tex.), Vol. 52, No. 33, Ed. 1 Thursday, October 27, 1927 (open access)

The Mineola Monitor (Mineola, Tex.), Vol. 52, No. 33, Ed. 1 Thursday, October 27, 1927

Weekly newspaper from Mineola, Texas that includes local, state and national news along with advertising. Also includes The Yellow Jacket, Mineola High School's weekly student newspaper, during the school year.
Date: October 27, 1927
Creator: Carraway, R. H.
Object Type: Newspaper
System: The Portal to Texas History
The Rusk Cherokeean (Rusk, Tex.), Vol. 9, No. 20, Ed. 1 Thursday, October 27, 1927 (open access)

The Rusk Cherokeean (Rusk, Tex.), Vol. 9, No. 20, Ed. 1 Thursday, October 27, 1927

Weekly newspaper from Rusk, Texas that includes local, state and national news along with advertising.
Date: October 27, 1927
Creator: Ward, H. O.
Object Type: Newspaper
System: The Portal to Texas History
The Rusk Cherokeean (Rusk, Tex.), Vol. 8, No. 31, Ed. 1 Thursday, January 27, 1927 (open access)

The Rusk Cherokeean (Rusk, Tex.), Vol. 8, No. 31, Ed. 1 Thursday, January 27, 1927

Weekly newspaper from Rusk, Texas that includes local, state and national news along with some advertising.
Date: January 27, 1927
Creator: Ward, H. O.
Object Type: Newspaper
System: The Portal to Texas History
Corsicana Democrat and Truth (Corsicana, Tex.), Vol. 40, No. 52, Ed. 1 Thursday, January 27, 1927 (open access)

Corsicana Democrat and Truth (Corsicana, Tex.), Vol. 40, No. 52, Ed. 1 Thursday, January 27, 1927

Weekly newspaper from Corsicana, Texas that includes local, state and national news along with some advertising.
Date: January 27, 1927
Creator: Armstrong, H. A. "Harvey"
Object Type: Newspaper
System: The Portal to Texas History
The Mexia Weekly Herald (Mexia, Tex.), Vol. 29, No. 20, Ed. 1 Friday, May 27, 1927 (open access)

The Mexia Weekly Herald (Mexia, Tex.), Vol. 29, No. 20, Ed. 1 Friday, May 27, 1927

Weekly newspaper from Mexia, Texas that includes local, state, and national news along with advertising.
Date: May 27, 1927
Creator: Houx, N. P.
Object Type: Newspaper
System: The Portal to Texas History
The Campus Chat (Denton, Tex.), Vol. 11, No. 16, Ed. 1 Thursday, January 27, 1927 (open access)

The Campus Chat (Denton, Tex.), Vol. 11, No. 16, Ed. 1 Thursday, January 27, 1927

Weekly student newspaper from the North Texas State College in Denton, Texas that includes local, state, and campus news along with advertising.
Date: January 27, 1927
Creator: Cooke, W.H. (Bill)
Object Type: Newspaper
System: The Portal to Texas History
The Saint Jo Tribune (Saint Jo, Tex.), Vol. 29, No. 28, Ed. 1 Friday, May 27, 1927 (open access)

The Saint Jo Tribune (Saint Jo, Tex.), Vol. 29, No. 28, Ed. 1 Friday, May 27, 1927

Weekly newspaper from Saint Jo, Texas that includes local, state and national news along with advertising.
Date: May 27, 1927
Creator: Reynolds, L. J.
Object Type: Newspaper
System: The Portal to Texas History
The Cass County Sun (Linden, Tex.), Vol. 52, No. 52, Ed. 1 Tuesday, December 27, 1927 (open access)

The Cass County Sun (Linden, Tex.), Vol. 52, No. 52, Ed. 1 Tuesday, December 27, 1927

Weekly newspaper from Linden, Texas that includes local, state and national news along with advertising.
Date: December 27, 1927
Creator: Banger, J. E. A. & Erwin, W. L.
Object Type: Newspaper
System: The Portal to Texas History
The Cass County Sun (Linden, Tex.), Vol. 52, No. 39, Ed. 1 Tuesday, September 27, 1927 (open access)

The Cass County Sun (Linden, Tex.), Vol. 52, No. 39, Ed. 1 Tuesday, September 27, 1927

Weekly newspaper from Linden, Texas that includes local, state and national news along with advertising.
Date: September 27, 1927
Creator: Banger, J. E. A. & Erwin, W. L.
Object Type: Newspaper
System: The Portal to Texas History

[Photograph 2012.201.B0422.0062]

Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "We are duly in receipt of your letter of the 22nd instant"
Date: January 27, 1927
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History