发明授权
US3620486A Autostable circular tethered wing balloon 失效
自动圆形四边形气球

Autostable circular tethered wing balloon
摘要:
This invention relates to an axisymmetrical-shaped, tethered wing balloon which is substantially autostable in the wind field and, particularly, to a wing balloon which, without performing any rotational motion, is able to keep relatively to the wind direction, a permanent consistent attitude irrespective of changes in wind velocity.
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