Science Quiz / Space Systems 3

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Can you name the Space Systems 3?

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QuestionAnswerNotes
Which of the following is not a Electrothermal propulsion system? Arcjet, ion engine, resistojet
Name another factor perturbing Keplerian orbits around the Earth
State the definition of emissivity, ε
What, approximately, is the total equivalent velocity change required to reach Earth Orbit, including all losses?Remember units, use ^ for powers.
How do we measure the orbital position of a satellite?
Name a factor perturbing Keplerian orbits around the Earth
How many geostationary satellites do you need to give full Earth coverage?
State a typical SI range for Solid rocket motorsRemember units, use ^ for powers.
Which of the below is the typical launch g load experienced by a satellite? a) 4.5 g b) 2.5 g c) 1.5 g
Which of the following is technically the hardest planet to send a spacecraft to? Mercury, Mars, Jupiter, Venus
A satellite in circular earth orbit has a speed of 7.9 kms-1. What -v is required to change its inclination by 30º?Remember units, use ^ for powers.
QuestionAnswerNotes
What does the Acronym TTC stand for?
Which particle is the most common constituent of Cosmic Radiation?
Name the two orbital parameters that define ‘geostationary‘orbit (not geosynchronous)
Give another reason why an equatorial launch site is preferable.
Name the 2 most commonly used reference planes in astrodynamics
What type of orbit would you choose for a communications satellite to cover Alaska? a) a sun-synchronous orbit b) a geostationary orbit c) a molniya orbit
What is the tabulation of power losses and gains in a communications system called?
For which of the following mission tasks are electric propulsion systems suitable? Launch, hohmann transfer impulses, station keeping
Give a reason why an equatorial launch site is preferable.
Which two factors determine the velocity change produced by a rocket operating with no external forces acting?
Give an example of the type of problems associated with operating a satellite caused by the high vacuum environment

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