- #1

wolfspirit

- 33

- 1

is there a formula to work out

how much thrust you need to get a certain weight of rocket up in the air, also for the rockets altitude?

Thanks

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- Thread starter wolfspirit
- Start date

- #1

wolfspirit

- 33

- 1

is there a formula to work out

how much thrust you need to get a certain weight of rocket up in the air, also for the rockets altitude?

Thanks

- #2

russ_watters

Mentor

- 21,940

- 8,975

- #3

wolfspirit

- 33

- 1

Can you please just confirm what the letters mean. (f=ma, s=at and d=st) Am I right in thinking they are f=force, m=mass, a = altitude, s=speed, t=time d=distance?

Thanks again!

- #4

Molydood

- 118

- 0

'a' is acceleration not altitude :-)

- #5

LURCH

Science Advisor

- 2,557

- 118

I think (and I hope someone will correct me if I'm wrong here) you can get a fairly good approximation if you figure in only half the weight of the fuel. Since the rocket starts off lifting all pof the fuel and ends up with none, half would be the mean average of the fuel mass.

Also, if you go on NASA's website (NASA.Gov), you can find some pretty cool tutorials.

- #6

wolfspirit

- 33

- 1

Thanks for that yes I can see how complicated it can get. I'll check out NASA'S website.

- #7

- 33,454

- 10,912

https://www.physicsforums.com/showthread.php?t=199087

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