Balloon adapted to perform a self-governing and reversible flight between the ground of a planet with an atmosphere and a predetermined altitude.

摘要

The lighter-than-air craft comprises a carrying balloon (1) and a solar hot air balloon (5) equipped with a lower permanent opening (7), and with an open opposite extremity delimited by an annular border (10) of a cross-section which is greater than that of the carrying balloon (1). Means of retention (11, 12) permit the coupling of the hot air balloon (5) and the carrying balloon (1) in such a way that the latter extends partially inside this hot air balloon, while conferring a degree of freedom in the radial direction on the annular border (10). Moreover, a belt (16d) is arranged around the annular border (10) and means of regulation (16c) are adapted to cause the clamping force of this belt to vary between a maximum force at which the annular border (10) is pressed in a leaktight fashion on the carrying balloon (1), and a minimum force conferring a degree of freedom in the radial direction to this annular border (10). <IMAGE>