GB579681A - Means for studying air-flow - Google Patents

Means for studying air-flow

Info

Publication number
GB579681A
GB579681A GB1881043A GB1881043A GB579681A GB 579681 A GB579681 A GB 579681A GB 1881043 A GB1881043 A GB 1881043A GB 1881043 A GB1881043 A GB 1881043A GB 579681 A GB579681 A GB 579681A
Authority
GB
United Kingdom
Prior art keywords
action
coating
gases
test
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1881043A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILLIAM EDRINGTON GRAY
Original Assignee
WILLIAM EDRINGTON GRAY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WILLIAM EDRINGTON GRAY filed Critical WILLIAM EDRINGTON GRAY
Priority to GB1881043A priority Critical patent/GB579681A/en
Publication of GB579681A publication Critical patent/GB579681A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
    • G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow

Abstract

579,681. Testing aircraft. GRAY, W. E. Nov. 12, 1943, No. 18810. [Class 4] In order to study the airflow over an aeroplane part, such as a wing, it is coated with a thin layer of starch mixed with potassium iodide with or without a small quantity of glycerine, and the part is then subjected in a wind tunnel or during free flight to the action of chlorine or ozone released into the airstream some distance ahead, the resulting differences in the degree of colouration indicating the areas of transition from laminar to turbulent flow. Smoke may be mixed with, or discharged in close proximity to the chemical gas to render it visible. A photographic record may be made of the colouration for comparison with others. Alternatively, a coating may be used which shows the action of the chemical gases only after further treatment. In the wind tunnel shown, the chemical gases are introduced through a tube 5 at a point where the wind velocity is relatively low and at. a sufficient distance from the part 4 to be tested to enable the disturbance of the airflow caused by such introduction to die down before reaching the test specimen. For testing in free flight, the gases are discharged from an aeroplane flying some distance in front of the craft being tested or they may, be released from a shell-like contamer fired up to or dropped to the test level where it bursts. Sodium thiosulphate may be added to the starch coating to prevent gradual discolouration when flying before and after the test. According to the Provisional Specification, a thin coating of lead acetate may be applied to the wing and subjected to the action of sulphuretted hydrogen.
GB1881043A 1943-11-12 1943-11-12 Means for studying air-flow Expired GB579681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1881043A GB579681A (en) 1943-11-12 1943-11-12 Means for studying air-flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1881043A GB579681A (en) 1943-11-12 1943-11-12 Means for studying air-flow

Publications (1)

Publication Number Publication Date
GB579681A true GB579681A (en) 1946-08-13

Family

ID=10118791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1881043A Expired GB579681A (en) 1943-11-12 1943-11-12 Means for studying air-flow

Country Status (1)

Country Link
GB (1) GB579681A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200621A (en) * 1991-12-16 1993-04-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Off-surface infrared flow visualization
CN102053004A (en) * 2010-05-19 2011-05-11 北京航空航天大学 Method for front fuselage high incidence boundary layer transition in a rolling and oscillating process of model
CN116183157A (en) * 2023-04-25 2023-05-30 太原理工大学 Intelligent wind tunnel experimental device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200621A (en) * 1991-12-16 1993-04-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Off-surface infrared flow visualization
CN102053004A (en) * 2010-05-19 2011-05-11 北京航空航天大学 Method for front fuselage high incidence boundary layer transition in a rolling and oscillating process of model
CN102053004B (en) * 2010-05-19 2012-06-27 北京航空航天大学 Method for front fuselage high incidence boundary layer transition in a rolling and oscillating process of model
CN116183157A (en) * 2023-04-25 2023-05-30 太原理工大学 Intelligent wind tunnel experimental device

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