(a) Briefly describe the propulsion of a rocket.
(b) Derive the expression for the velocity of a rocket at any
time, after being fired.
(c) What is meant by burnt out
speed of a rocket ?
(d) Also obtain an expression for the
thrust on a rocket.
Answers
a)Rocket Propulsion. Thrust is the force which moves any aircraft through the air. ... The combustion produces hot exhaust which is passed through a nozzle to accelerate the flow and produce thrust. For a rocket, the accelerated gas, or working fluid, is the hot exhaust produced during combustion.
b)sorry dont know
c)burnout velocity. (aerospace engineering) The velocity of a rocket at the time when depletion of the fuel or oxidant occurs. Also known as all-burnt velocity; burnt velocity.
d)Weight is mass (in kg) x 9.8, which gives 0.050 x 9.8 = 0.49 N. The resultant force is the thrust – weight = 5 – 0.49 = 4.51 N (unrounded). Acceleration = resultant force divided by mass = 4.51 ÷ 0.050 = 90 metres per second squared (90 m/s2). This means that, every second, the speed of the rocket increases by 90 m/s
Answer:
refer to the attached image
