The Most Common Mistake In Rockets

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Con Hathy

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Published on August 18, 2018 12:57:48 AM ● Video Link: https://www.youtube.com/watch?v=HYD5F9CLX8g

Duration: 8:44

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THE GRAVITY JETPACK:
Wow, this has blown up in the past day for no reason. I made this 2 years ago when Gravity only had about 6 videos and I hadn't heard of them yet. They're definitely the closest thing to flying like Iron man and I'm a big fan. I don't want to cut the Hacksmith part of this video because it's been well discussed in these comments, but I would like to update my points.

1. I don't like how harsh I was, I should comment on the Hacksmith's design without being rude. Unfortunately, it's too late to make changes to this video.
2. The gravity suit is a great example of how people are rigid enough to fly with thrust on their limbs. (2/3 of the thrust is on the pilot's arms in this suit)
3. The gravity jet pack is much more practical than my idea of boots.
- (I was concerned a jetpack would have to be bulky and have arms that extend away from you, but this is a very sleek design. Very Iron man)

Today I explain one of the oldest mistakes in rocketry: The Pendulum Rocket Fallacy.

James Bruton and Ivan Miranda's Rocket Collaboration:
https://www.youtube.com/watch?v=JB6BlXCU7WQ&t=148s

The Hacksmith Videos:
https://www.youtube.com/watch?v=2j_qdFrBVtk
https://www.youtube.com/watch?v=v4XB18RzTho&t=7s

Flyboard Air:
https://www.youtube.com/watch?v=-kB-BGMXxZc&t=128s
(This one was out before the hacksmith video, but didn't appear in my video)
https://www.youtube.com/watch?v=Dy-1uZrJpAM

Flyboard Water:
https://www.youtube.com/watch?v=m4Bm3cs9TFo

Skiing Video (Because why not?)
https://www.youtube.com/watch?v=f165rVIU1BY&t=8s

(0:00) - Introduction
(0:53) - What is the Pendulum Rocket Fallacy?
(2:07) - Why doesn't it work?
(4:13) - Real-world examples
(4:59) - The Hacksmith Videos
(6:59) - I didn't know about the Gravity suit yet
(7:55) - Outro