Long range hybrid electric airplane

摘要: An advanced internal combustion-electric hybrid airplane, having at least double the flight range and duration than a conventional equivalent while using same amount of any desirable fuel. This is achieved by 2-3× smaller ultra-lightweight engine for cruising, electric motor powered lithium batteries during take-off climbing. The becomes generator cruising descent, recharging said batteries. airplane has also temporary silent stealth capability added safety back-up power. Due to its high efficiency, operational cost substantially reduced. Additional features include highly advanced, minimum drag weight airframe.