METHOD FOR CHANGING FLOATABILITY OF AIRSHIP WITH PROPULSION HYDROCARBON-FUELLED ENGINES AND PROPELLERS AS PROPULSIVE DEVICE Russian patent published in 1994 - IPC

FIELD: lighter-than-air aircraft. SUBSTANCE: method includes arrangement in airship hull of ballast separated from exhaust gases of propulsion engine. Exhaust gases freed of solid and liquid fractions, and water produced in this operation is cleaned and discharged overboard. Gaseous carbon dioxide produced is stored on bottom of airship hull hollow whose upper part is communicated with atmosphere. To reduce airship floatability, part of gaseous carbon dioxide is liquefied. EFFECT: improved service properties. 1 dwg