Is there a theoretical smallest physical size for a rocket that could achieve orbit?
- jehenLv 710 months ago
Yes, depending on the fuel, the engine and the payload. But I imagine at some point in the shrinking process a projectile that reaches orbit would be far more effective than a miniature rocket.
- EricLv 410 months ago
There is no such thing as orbit. Explain how a vacuum can exist right alongside a self-contained system.
- AthenaLv 710 months ago
- thomas fLv 710 months ago
Minimum orbital velocity is ~17,500 miles per hour. A minimal satellite such as Sputnik with a mass of ~25kg will need a kinetic energy of ½mV², so you could calculate the minimum amount of rocket fuel plus oxidizer in order to impart this kinetic energy to said satellite. I don't remember my Physics schooling enough to perform this calculation, but it is easy enough for one who is knowledgable in this area.
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- billrussell42Lv 710 months ago
no. Hydrogen atoms manage to disperse outside the atmosphere all the time.
- 10 months ago
If there is, it would be smaller than the Pegasus launch vehicle.
However, no small sounding rocket has ever achieved orbit.