THERMOAIRSHIP Russian patent published in 1994 - IPC

FIELD: aerostation. SUBSTANCE: thermoairship has lenticular hull made form of rigid toroidal hollow rim 1 with lower and upper (3) flexible envelopes secured to it, main carrier gas bags 4 and engines 23 and control aids 19 mounted on hull. Envelopes are provided with additional bags 5 and 6 each of which is divided by flexible diaphragm 7 into upper cell 8 for carrier gas and lower cell 9 for liquid (water, fuel). Besides that, thermoairship is provided with flexible inflatable guard 10 secured to lower portion of toroidal rim 1. Inner volume of rim is divided by rigid horizontal partition 11 into two parts: upper part is used as cargo cell and lower part is used as liquid cell which may be divided in its turn into communicating sections. Besides that, upper envelope is two-skin envelope with clearance increasing towards center. EFFECT: safe water landing, protracted drift in waves and reduced resistance due to maintenance of elasticity of envelope. 9 cl, 6 dwg