!!!!help Please!!!! (1 Viewer)

[JoeMK]

i need help with this question please.. just some guidance:

Mathematcly analyse, using diagrams, rocket burning in terms of momentum conservation and the rate of fuel consumption R, and derive the acceleration for a rocket during its launch stage.

^^ which equations to use

and the part of another question about launch vehicles, where its say: Calculate the range at which various stages are discarded and at which it finally goes to orbit... what is meant by "range" in terms of multi-stage rocketry?

 

[YBK]

i need help with this question please.. just some guidance:

Mathematcly analyse, using diagrams, rocket burning in terms of momentum conservation and the rate of fuel consumption R, and derive the acceleration for a rocket during its launch stage.

^^ which equations to use

and the part of another question about launch vehicles, where its say: Calculate the range at which various stages are discarded and at which it finally goes to orbit... what is meant by "range" in terms of multi-stage rocketry?

I dont know, maybe m=v^2/r ????

 

[helper]

I=FT=m_fv-m_iu

Range=altitude

 

[JoeMK]

I=FT=m_fv-m_iu

Range=altitude

so by range he means the altitude..i was confused cuz i thought range in the context of projectile motion, being the horizontal distance
thanks

and for the rocket one... i think i got it figured out

 

[passion89]

p = mv for rocket

 

[shinji]

what bout the thrust equation? i forgot it ..

was something like this:
Thrust = mass x acceleration - mass x gravity (9.8ms^-2

im not sure if that's correct though

 

[Jono_2007]

i need help with this question please.. just some guidance:

Mathematcly analyse, using diagrams, rocket burning in terms of momentum conservation and the rate of fuel consumption R, and derive the acceleration for a rocket during its launch stage.

^^ which equations to use

and the part of another question about launch vehicles, where its say: Calculate the range at which various stages are discarded and at which it finally goes to orbit... what is meant by "range" in terms of multi-stage rocketry?

For momentum, p=mv where p=momentum, v=velocity
m=mass,
- As momentum is the product of mass and velocity.
For aceleration derivation and momentum conservation (time rate of change of momentum).
F=ma
And a=∆v/∆t
=v-u/∆t
therefore F=m(v-u)/∆t
=mv-mu/∆t
=∆mv/∆t

Also r^3/T^2=GM/4π^2
therfore r^3=GMT^2/4π^2

But i don't understand what you want to calculate when your given no data to go with.