A rocket of 5000 tonnes has lifted off at sea level. Assuming that there are no drag and gravitational losses, and all the generated thrust applies to the rocket only, calculate the mass of propellant used to reach 2000 ms". During the operation to reach the stated speed, no part of the rocket is jettisoned and continuous propulsion is provided by one rocket engine having specific impulse of 500 s.

A rocket of 5000 tonnes has lifted off at sea level. Assuming that there are no drag and gravitational losses, and all the generated thrust applies to the rocket only, calculate the mass of propellant used to reach 2000 ms". During the operation to reach the stated speed, no part of the rocket is jettisoned and continuous propulsion is provided by one rocket engine having specific impulse of 500 s.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Topic: Impulse and Momentum Sand drops at a rate of 2000 kg/min from the bottom of a hopper onto a belt conveyer moving horizontally at 250 m/min. Determine the force needed to drive the conveyer, neglecting friction.
Assuming the there are no heat effect and no frictional effects, find the speed of a 3220 lb body in fpm after it falls 778 ft from rest. Start with the steady flow equation, deleting terms which are irrelevant.
A model rocket has engine with an average thrust of 2.82 N. The rocket mass is 71.5 g, which includes fuel mass 27.3 g. The duration of fuel burning is 2.52 s. What is the final speed vf of this rocket if it were to be fired from International Space Station with initial speed vi=7660 m/s? Assume the fuel burns at a constant rate.
Assume that 87 kg of fuel are burned by a rocket per second. If the exhaust gases have a speed of 2.8 x 103 m/s, what is the thrust in N on the rocket?
A nozzle inclined at an angle of 68° with the horizontal issues an 82-mm-diameter water jet at a rate of 14 m/s. What is the area (in sq. m.) of the jet at the highest point of the projectile? Neglect air resistance.
Suppose that the solid-propellant rocket isbuilt into a missile of diameter 70 cm and length 4 m. Thesystem weighs 1800 N, which includes 700 N of propellant.Neglect air drag. If the missile is fi red vertically fromrest at sea level, estimate ( a ) its velocity and height at fuelburnout and ( b ) the maximum height it will attain.
Q6) A water jet hits horizontally a 50-kg block with a velocity of (20 m/s), see the figure. The friction coefficient between the block and the ground is (0.9). What is the minimum diameter (d) of the water jet required for the block to slide to the left?
A box of mass 80 kg is moving at a speed of 10 m/s on a ropeway. If the box is 40 m above the ground level, estimate the potential energy and kinetic energy of the box.
A helicopter of mass 8.25 tonnes is flying at a rate of 175 Kmph, at a height of 3 x 105 cm above the ground level. Calculate the total energy possessed by the helicopter.
Three parallel plates are placed horizontally and are separated by two fluids at 18°C, with Plate A placed at the bottom and at rest, while Plate C is placed on top and moves at 3 m/s. Cyclohexane lies between Plate A and Plate B, spaced 3 cm apart, while water lies between Plates B and C spaced 3 cm apart. a. What is the relation of the rate of transfer of momentum between Plates A and B, with that between Plates B and C? b. Calculate the velocity of Plate B at steady state. c. Suppose that the plates are spaced equally 5-cm apart, what will be the velocity of Plate B and the shear stress exerted on Plate A to maintain Plate 3 at 3 m/s?
An ideal water jet with volume flow rate of 0.05 m^ 3 / s strikes a flat plate placed normal to its path and exerts a force 1000 N Considering the density of water as 1000 kg / (m ^ 3) , find the diameter (in mm) of the water jet.
To avoid the bulky tower and impeller and generator inthe HAWT of the chapter-opener photo, we could insteadbuild a number of Darrieus turbines of height 4 m anddiameter 3 m. (a) How many of these would we need tomatch the HAWT’s 100 kW output for 15 m/s wind speedand maximum power? (b) How fast would they rotate?Assume the area swept out by a Darrieus turbine is twothirdsthe height times the diameter.