| 摘要 |
1536860 Aircraft ALL AMERICAN INDUSTRIES Inc 23 Dec 1975 [23 Dec 1974] 52712/75 Addition to 1460822 Heading B7W An aircraft comprising a rotatable wing device and a balloon structure structurally linked to the rotatable wing device for rotation therewith as claimed in parent Specification has a propulsion engine mounted on each wing and heat exchange means associated with the engines for transferring heat to the gas within the balloon structure. |
