HENRY MARIE COANDA 1886-1972- AKA Henri Marie Coanda

Henry Coanda From the collection of Mihai Radu

 

Coanda's First Plane, 1910 From the collection of Mihai Radu

 

ONLINE RESOURCES - 1      If you will search the net using Google on "Henry Coanda", you will find about 705 links! A good place to start is reached by clicking on: Henry Coanda      If you want further details of his life and career, you will find many of the links lead to websites in English.

 

Henri Marie Coanda      I was alerted to this very nice biography of Henri Coanda by Aurelian Simionescu, to whom I am very grateful. As usual, the biographies which are available on the ALLSTAR network website are very helpful, well worth a visit. This one is especially comprehensive. You can access the site by clicking on the title above.

 

ONLINE RESOURCES - 2      The two links below were suggested to me by Aurelian Simionescu. (5-25-05) He included the following comments: "Both links are on the Coanda Effect which he discovered during his first flight in 1910 i.e. the hot gasses ejected by the jet engine flew close to the fuselage and surrounded the pilot, rather than being deflected by the fins he attached ahead of the cockpit.

The Coanda Effect ~ US Patents "US Patent # 2,052,869 Device for Deflecting a Stream of Elastic Fluid Projected into an Elastic Fluid Henri Coanda Sept. 1, 1936 It is an observed fact that when a stream or sheet of fluid issues through a suitable orifice, into another fluid, it will carry along with it a portion of the surrounding fluid, if its velocity is sufficient. In particular, if a sheet of gas at high velocity issues into an atmosphere of another gas of any kind, this will produce, at the point of discharge of the said sheet of gas, a suction effect, thus drawing forward the adjacent gas."       Above you see the heading and first paragraph which I have extracted from the website. You will find that it offers Coanda's complete description of his patent, accompanied by numerous explanatory diagrams. You can access the site by clicking on the title above.

The Coanda Saucer or the "Repulsin type A" test By Jean-Louis Naudin created on October 9th, 1999 - JLN Labs - Last update October 10th, 1999 "The Coanda Effect has been discovered in1930 by the Romanian aerodynamicist Henri-Marie Coanda (1885-1972). He has observed that a steam of air (or an other fluid) emerging from a nozzle tends to follow a nearby curved surface, if the curvature of the surface (or angle the surface makes with the stream) is not too sharp"       This website offers a description and analysis of an experimental apparatus which demonstrates the Coanda Effect. It even includes a video of the apparatus in action. You can access the site by clicking on the title above.

 

ONLINE RESOURCES - 3      The two links below were suggested to me by Aurelian Simionescu. (11-22-05)

1910 Coanda jet airplane       Aurelian included the following comment regarding this webpage:      "This page offers a photograph taken inside the Romanian National Military Museum in Bucharest, showing a full-size replica of the 1910 Coanda jet airplane."       You can access the site by clicking on the title above.

 

ONLINE RESOURCES - 4      Here are four more important links which were suggested to me by Aurelian Simionescu. (1-28-06) & (2-6-06)

Aviation Archive: Aviation Heritage       This link leads to a page which features the story of Henry Coanda and offers beautiful photographs of three of his planes. Each one is linked to a more exhaustive description of the plane, along with an enlarged view of the photo. You can access the page by clicking on the title above.       Once on the site, if time permits, you should visit the homepage by clicking on the link labeled. "FILTON THE AIRCRAFT." You will find yourself at the beginning of a fifteen page story of the history of the British and Colonial Aeroplane Company.

 

Sir Stanley White and his Bristol Aeroplanes, 1910 - 1918      This is a great resource about Bristol Aeroplanes where Henri Coanda and Bristol Coanda aeroplanes are featured close to the bottom of the page.       You can access the site by clicking on the title above.

 

DiscoverHover CURRICULUM GUIDE #8 BERNOULLI’S PRINCIPLE AND THE COANDA EFFECT      This article from the World Hovercraft Organization offers a very informative and detailed explanation of the Coanda Effect, "A moving stream of fluid in contact with a curved surface will tend to follow the curvature of the surface rather than continue traveling in a straight line." It includes many diagrams and photographs which supplement the explanation.       You can access the site by clicking on the title above.

 

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