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496
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416
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103
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64
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56
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50
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N.A.C.A. Stall-Warning Device
With some airplanes the approach to the stall is accompanied by changes in the behavior, such as tail buffeting or changes in the control characteristics of the airplane so that the pilot obtains a warning of the impending stall. Vith other airplanes it is possible to approach the stall without any perceptible warning other than the reading of the air-speed meter, in which case the danger of inadvertent stalling is considerably greater. Although it is not within the scope of this paper to discuss stalling characteristics, it is desired to point out that in general the danger of inadvertent stalling is greatest with those airplanes that behave worse when the stalling occurs; that is, with airplanes in which the stall starts at the wing tips. A warning of the impending stall is desirable in any case, but is particularly desirable with airplanes of the latter type.
Date:
February 1938
Creator:
Thompson, F. L.
Object Type:
Report
System:
The UNT Digital Library
The Abilene Reporter-News (Abilene, Tex.), Vol. 57, No. 256, Ed. 2 Tuesday, February 1, 1938
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alva Daily Record (Alva, Okla.), Vol. 36, No. 27, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Alva, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
Cayce, O. F.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Brady Standard (Brady, Tex.), Vol. 29, No. 91, Ed. 1 Tuesday, February 1, 1938
Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Breckenridge American (Breckenridge, Tex.), Vol. 18, No. 27, Ed. 1, Tuesday, February 1, 1938
Daily newspaper from Breckenridge, Texas that includes local, state and national news along with extensive advertising.
Date:
February 1, 1938
Creator:
Hall, C. M.
Object Type:
Newspaper
System:
The Portal to Texas History
Brenham Banner-Press (Brenham, Tex.), Vol. 54, No. 263, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Brenham, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
Robertson, Ruby
Object Type:
Newspaper
System:
The Portal to Texas History
Bristow Daily Record (Bristow, Okla.), Vol. 17, No. 241, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Bristow, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
Nichols, L. M.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Catalog of Abilene Christian College, 1938
Summer session catalog describes the course offerings and general information about Abilene Christian College in Abilene, Texas.
Date:
February 1938
Creator:
Abilene Christian College
Object Type:
Book
System:
The Portal to Texas History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 45, No. 303, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Chickasha, Oklahoma that includes local, state and national news along with advertising.
Date:
February 1, 1938
Creator:
Evans, George H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Cleburne Times-Review (Cleburne, Tex.), Vol. 33, No. 101, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Cleburne, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
Bacus, Roy
Object Type:
Newspaper
System:
The Portal to Texas History
[Client Card: Mrs. A. B. Carver]
Client card describing work completed at the Roman Bronze Works Foundry for Mrs. A. B. Carver, including a job number, brief description, monetary amount, and dates associated with each entry. This work order includes bronze casts of various heads, including women, a girl's, and a boy's.
Date:
1938-02/1938-08
Creator:
Roman Bronze Works Foundry
Object Type:
Text
System:
The Portal to Texas History
The Coyote (Weatherford, Tex.), Vol. 12, No. 10, Ed. 1 Tuesday, February 1, 1938
Bimonthly student newspaper from Weatherford College in Weatherford, Texas that includes news of interest to students and staff along with advertising.
Date:
February 1, 1938
Creator:
Weatherford College
Object Type:
Newspaper
System:
The Portal to Texas History
The Cuero Record (Cuero, Tex.), Vol. 44, No. 26, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Cuero, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
Putman, Harry C.
Object Type:
Newspaper
System:
The Portal to Texas History
The Cushing Daily Citizen (Cushing, Okla.), Vol. 15, No. 171, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Daily Derrick (Drumright, Okla.), Vol. 22, No. 172, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Drumright, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Daily Sun (Goose Creek, Tex.), Vol. 19, No. 191, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Goose Creek, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
Pendergraft, W. L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Denison Press (Denison, Tex.), Vol. 4, No. 191, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Denison, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Denton Record-Chronicle (Denton, Tex.), Vol. 37, No. 146, Ed. 1 Tuesday, February 1, 1938
Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
McDonald, L. A.
Object Type:
Newspaper
System:
The Portal to Texas History
Earl Carey Home
Photograph of the Earl Carey Home during an Ice Storm, Feb. 1938.
Date:
February 1938
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
The Edmond Enterprise (Edmond, Okla.), Vol. 37, No. 1, Ed. 1 Tuesday, February 1, 1938
Weekly newspaper from Edmond, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1938
Creator:
Banzett, D. W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Effect of Surface Irregularities on Wing Drag 1 - Rivets and Spot Welds
"Tests have been conducted in the NACA 8-foot high-speed wind tunnel to determine the effect of exposed rivet heads and spot welds on wing drag. Most of the tests were made with an airfoil of 5-foot chord. The air speed was varied from 80 to 500 miles per hour and the lift coefficient from 0 to 0.30" (p. 1).
Date:
February 1938
Creator:
Hood, Manley J.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Surface Irregularities on Wing Drag 2 - Lap Joints
Tests have been made in the NACA 8-foot high-speed wind tunnel of the drag caused by four types of lap joint. The tests were made on an airfoil of NACA 23012 section and 5-foot chord and covered in a range of speeds from 80 to 500 miles per hour and lift coefficients from 0 to 0.30. The increases in profile drag caused by representative arrangements of laps varied from 4 to 9%. When there were protruding rivet heads on the surface, the addition of laps increased the drag only slightly. Laps on the forward part of a wing increased the drag considerably more than those farther back.
Date:
February 1938
Creator:
Hood, Manley J.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Surface Irregularities on Wing Drag 3 - Roughness
"Tests have been made in the N.A.C.A. 8-foot high-speed wind tunnel of the drag caused by roughness on the surface of an airfoil of N.A.C.A. 23012 section and 5-foot chord. The tests were made at speeds from 80 to 500 miles per hour at lift coefficients from 0 to 0.30. For conditions corresponding to high-speed flight, the increase in the drag was 30 percent of the profile drag of the smooth airfoil for the roughness produced by spray painting and 63 percent for the roughness produced. by 0.0037-inch carborundum grains" (p. 1).
Date:
February 1938
Creator:
Hood, Manley J.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Surface Irregularities on Wing Drag 4 - Manufacturing Irregularities
"Tests were made in the NACA 8-foot high speed wind tunnel of a metal-covered, riveted, 'service' wing of average workmanship to determine the aerodynamic effects of the manufacturing irregularities incident to shop fabrication. The wing was of 5-foot chord and of NACA 23012 section and was tested in the low-lift range at speeds from 90 to 450 miles per hour corresponding to Reynolds numbers from 4,000,000 to 18,000,000. At a cruising condition the drag of the service wing was 46% higher than the drag of a smooth airfoil, whereas the drag of an accurately constructed airfoil having the same arrangement of 3/32-inch brazier-head rivets and lap joints showed a 29% increase" (p. 1).
Date:
February 1938
Creator:
Robinson, Russell G.
Object Type:
Report
System:
The UNT Digital Library