Patent FR-1907-385120
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Surcouf writes that dirigible balloons have critical speed which exceeds their coefficient de sécurité, a speed less than the maximum speed allowed by their motors. (Possibly this has to do with the structural integrity of the balloon; distortions of shape caused by high speed?) The fusiform shape helps with lateral stability; in addition Surcouf describes a tail which performs the same function as the fletching of an arrow.
Specifically this tail comprises four conical ballonets, parallel to the longitudinal axis of the vessel, with gas communicating with the main balloon.
The use of ballonets avoids the problem of creating weak points in the structure of the primary balloon.
Inventor location:France (Seine)
Sources
- http://espacenet.com/searchResults?query=fr385120a]
- {{esp|FR|385120A espacenet]
Year filed | 1907 |
---|---|
Year granted | 1908 |
Office | FR |
Patent number | 385120 |
Inventors | Édouard Surcouf, Édouard Surcouf |
Inventor country | FR |
Applicant person | |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | Yes |
Original title | Empennage stabilisateur pour ballons dirigeables |
English title | Stabilizing tail for dirigibles |
Tech fields | LTA, stability, balloon, ballonet |
Filing date | December 17, 1907 |
Full specification filed date | |
Application number | 385120D |
Grant date | February 28, 1908 |
Granted? | Yes |
Publication date | May 2, 1908 |
Supplementary to patent | |
Related to aircraft? | Yes |
Serial number | |
Patent agent | Marillier et Robelet |
Assigned to | |
National tech categories | FR 6.4 |
IPCs | IPC B64B1/58 |
CPCs | CPC B64B1/58 |
Family year | 1907 |
First filing? | No |
Cites these patents | |
Citations from after 1930 | |
Application ID | 19204796 |
INPADOC family ID | 5194926 |
Number of text pages | 2 |
Number of diagram pages | 1 |
Number of figures | 2 |
Number of claims |