This is a replica of Robert Goddard, a pioneer of liquid fueled rockets, first prototype rocket. It fell for the classic rocket pendulum fallacy, and so I made the engine slightly off-center to replicate that.
GENERAL INFO
- Created On: Android
- Game Version: 0.9.616.1
- Price: $165k
- Number of Parts: 18
- Dimensions: 7 m x 5 m x 3 m
PERFORMANCE
- Total Delta V: 891m/s
- Total Thrust: 26kN
- Engines: 1
- Wet Mass: 606kg
- Dry Mass: 400kg
STAGES
| Stage | Engines | Delta V | Thrust | Burn | Mass |
|---|---|---|---|---|---|
| 1 | 1 | 891m/s | 26kN | 17s | 606kg |
4 Comments
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0 Samps0n2.2 years ago
Why placing it off center ? I don’t see how this has anything to do with the demonstration. Maxed @41 ‘ so to make it about as weak as a stronger stage one would be accurate. I thank you for caring about the classic history of rockets.
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450 SpaceXplained+2 4.0 years ago
@DragonTech Basically, it's the thought process that if you put the rocket motors at the top of the rocket, it will be more stable due to gravity pulling on the bottom of the rocket, making it behave like a pendulum. Gravity does, however, affect the whole vehicle the same, so it doesn't behave like that, so you may as well just save weight and put the engines at the bottom. While it is possible to do, as you can see in traditional abort towers like the ones on the Saturn V and SLS, it offers no advantages over a normal rocket configuration. Scott Manley goes into more detail on this subject in his video about the pendulum rocket fallacy, linked here: https://youtu.be/Tx4cjP-GRAY
Can you explain to me what the pendulum fallacy is? I assume it means that putting a thruster at the top does not stabilize it but can you explain why because I'm curious.