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Worldtech
Two spaceships leave Earth in opposite directions, each with a speed of 0.58c with respect to Earth.
- space
- transfer orbit
on 3rd January 2025 in Space dynamics.
- 557
- 1
- 0
Worldtech
When exploring a small planet with a radius of 770 km and a mass of 8.48 x 10^30 kg a small spacecraft with a mass of 8170 kg is placed in an elliptical orbit around it.
- space
- transfer orbit
on 23rd December 2024 in Space dynamics.
- 458
- 1
- 0
Worldtech
Determine the differential equation for small oscillations about a circular orbit when the attractive force is -K/r².
- space
- transfer orbit
on 8th November 2023 in Space dynamics.
- 1K
- 1
- 0
Worldtech
The satellite orbit is characterized by e = 0.508 and a/R = 3.34, and its launch point was r0/R = 2.0, Θ = 62°23′.
- space
- transfer orbit
on 8th November 2023 in Space dynamics.
- 818
- 1
- 0
Worldtech
A communication satellite orbiting around earth has an eccentricity of \(0.0014\). Find the time period of the satellite, altitude at apogee and velocity at perigee, if the satellite has an altitude of \(400\,km\) at perigee from the surface of the earth.
- earth
- satellite
- space
on 1st March 2021 in Space dynamics.
- 1K
- 1
- 0
Kumar59
Calculate the orbital and escape velocity from earth, mass of earth is \(5.9722 \times {10^{24}}\,kg\) and radius is \(6.378 \times {10^6}\,m\).
- earth
- space
on 1st March 2021 in Space dynamics.
- 1K
- 1
- 0
Kisan Kumar
Two satellites of masses m and 2m are on the same circular orbit around earth. If the velocity of the lighter satellite is v0, what is the velocity of the heavier satellite?
on 19th October 2019 in Space dynamics.
- 2K
- 1
- 0
Kisan Kumar
An elliptic orbit has its perigee at 400 km above the earth’s surface and apogee at 3400 km above the earth’s surface. For this orbit, what is the eccentricity and semi-major axis respectively.
- GATE
on 14th October 2019 in Space dynamics.
- 1K
- 1
- 0
Kisan Kumar
The propellant in a single stage sounding rocket occupies 60 % of its initial mass. If all of it is expanded instantaneously at an equivalent exhaust velocity of 3000 m/s, what would be the altitude attained by the payload when launched vertically?
- GATE
on 8th October 2019 in Space dynamics.
- 1K
- 1
- 0
Kisan Kumar
Poll Normalization of the specific impulse of the rocket.
- transfer orbit
on 3rd October 2019 in Space dynamics.
- 970
- 0
- 0

Poll Normalization of the specific impulse of the rocket.