Why is the F35B Lift Fan so tall? How many (layers of) fans are there? Are they fixed or variable pitch? How is thrust controlled? - Quora
![The lift fan door flattens the upper surface of the F-35 just behind the cockpit, giving this model a distinctive hump | 戦闘機, 航空母艦 The lift fan door flattens the upper surface of the F-35 just behind the cockpit, giving this model a distinctive hump | 戦闘機, 航空母艦](https://i.pinimg.com/736x/b9/3e/82/b93e82a20e716c52d8d40e249a14a61a.jpg)
The lift fan door flattens the upper surface of the F-35 just behind the cockpit, giving this model a distinctive hump | 戦闘機, 航空母艦
![The lift fan door flattens the upper surface of the F-35 just behind the cockpit, giving this model a distinctive hump. The hump is especially no��… | ศิลปะคาแรคเตอร์ The lift fan door flattens the upper surface of the F-35 just behind the cockpit, giving this model a distinctive hump. The hump is especially no��… | ศิลปะคาแรคเตอร์](https://i.pinimg.com/originals/ae/71/8d/ae718d4a218219716542f6484936525f.jpg)
The lift fan door flattens the upper surface of the F-35 just behind the cockpit, giving this model a distinctive hump. The hump is especially no��… | ศิลปะคาแรคเตอร์
![military - What is the difference in VTOL technology between British Aerospace Harrier II and F-35B? - Aviation Stack Exchange military - What is the difference in VTOL technology between British Aerospace Harrier II and F-35B? - Aviation Stack Exchange](https://i.stack.imgur.com/sLg9E.jpg)