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
![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)
military - What is the difference in VTOL technology between British Aerospace Harrier II and F-35B? - Aviation Stack Exchange
Lockheed Martin on Twitter: "F-35B Liftoff The F-35B uses an advanced lift fan to generate downward thrust, enabling it to hover and land vertically. https://t.co/cLtuBeHJNL" / Twitter
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