Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1921 |
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Сторінка 203
... surface of the water , a noticeable irregularity occurred when changing speed or when traveling in choppy water , due to the effect of the entire plane entering or leaving the water at once . On the present machine the lower end of one ...
... surface of the water , a noticeable irregularity occurred when changing speed or when traveling in choppy water , due to the effect of the entire plane entering or leaving the water at once . On the present machine the lower end of one ...
Сторінка 203
... surface of the plane absolutely horizontal , which proves the contention that the under surface is comparatively unimportant . At present the hydrofoil surfaces of the HD - 4 are supporting approximately 2,000 pounds to the square foot ...
... surface of the plane absolutely horizontal , which proves the contention that the under surface is comparatively unimportant . At present the hydrofoil surfaces of the HD - 4 are supporting approximately 2,000 pounds to the square foot ...
Сторінка 246
... surface of glass by letting a film of strong glue dry and contract on it is also stated to reveal a crystalline network . Both the etching and this method give markings , very like a network , no doubt , but the figuring of the surface ...
... surface of glass by letting a film of strong glue dry and contract on it is also stated to reveal a crystalline network . Both the etching and this method give markings , very like a network , no doubt , but the figuring of the surface ...
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Bureau of American Ethnology | 17 |
Report on the United States National Museum | 25 |
EXECUTIVE COMMITTEE AND REGENTS | 100 |
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