• Question Cagtegory: Space dynamics
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• ## Determine the differential equation for small oscillations about a circular orbit when the attractive force is -K/r².

Determine the differential equation for small oscillations about a circular orbit when the attractive force is -K/r².

Worldtech Asked on 8th November 2023 in
• 80 views
• ## 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′.

The satellite orbit is characterized by e = 0.508 and a/R = 3.34, and its launch point was r0/R = …

Worldtech Asked on 8th November 2023 in
• 67 views
• ## 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.

A communication satellite orbiting around earth has an eccentricity of $$0.0014$$. Find  the time period of the satellite, altitude at …

Worldtech Asked on 1st March 2021 in
• 706 views

Calculate the orbital and escape velocity from earth, mass of earth is $$5.9722 \times {10^{24}}\,kg$$ and radius is $$6.378 \times … Kumar59 Asked on 1st March 2021 in • 654 views • 1 answers • 0 votes • ## 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? Two satellites of masses \(m$$ and $$2\;m$$ are on the same circular orbit around earth. If the velocity of the …

Kisan Kumar Asked on 19th October 2019 in
• 849 views
• ## 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.

An elliptic orbit has its perigee at 400 km above the earth’s surface and apogee at 3400 km above the …

Kisan Kumar Asked on 14th October 2019 in
• 803 views
• ## 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?

The propellant in a single stage sounding rocket occupies 60 % of its initial mass. If all of it is …

Kisan Kumar Asked on 8th October 2019 in
• 787 views
• ## PollNormalization of the specific impulse of the rocket.

A rocket is to be launched from the bottom of a very deep crater on mars for earth return.The specific …

Kisan Kumar Asked on 3rd October 2019 in
• 545 views