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25 Cards in this Set
- Front
- Back
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The classical orbital element which indicates the angle the orbital plane makes with the equatorial plane is called the...
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Inclination
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The time at which the classical orbital elements are measured for specific satellite is called...
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Epoch
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The two types of rockets are?
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Liquid and solid
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A spacecraft was launched from Kennedy Space Center which is at a latitude of 28.5 N. What can be said about the spacecraft's orbit?
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Its inclination is greater than or equal to 28.5.
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The point at which a spacecraft is closest to the earth in an elliptical orbit is called?
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Perigee
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The classical orbital element that defines the shape of an orbit is called?
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Eccentricity
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Keppler's First Law states...
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All orbits are elliptical
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The origin of the J2000 coordinate system used to locate satellites is the center of the Earth. T/F?
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True
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The ground track for a geostationary satellite is a?
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Point
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National technical means space systems operate in which orbital regimes?
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LEO, HEO, and GEO
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Reaction wheels, torque rods and thrusters are all part of a spacecraft's...
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Attitude control systems
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An adversary's imaging satellite has just passed overhead with your location in its field of regard. Can it take your picture?
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True and maybe...
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The three segments of satellite operations are the space segment, the user segment, and the...
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Control segment
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An object operating in a gravity field but free from all other forces is...
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In free fall
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A satellite with a highly elliptic orbit (HEO) moves at the highest speed when...
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It's at perigee
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An imagery analyst is very happy with photos from a satellite is sun-synchronous orbit because...
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The angle to the sun remains constant for all images keeping shadows the same from one pass to the next.
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A spacecraft in an inclined prograde orbit has a ground track which...
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Does not overlap but has a gap.
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A geosynchronous orbit...
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has a period of 24 hours.
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The classical orbital element called the semi-major axis indicates the...
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Size of the orbit.
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The formal definition of where space begins is...
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There is no formal definition.
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The important characteristics of an orbit are...
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Regular and repeating.
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An explosive release of mass from the sun is called...
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Coronal mass ejection.
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Batteries are needed on a satellite to...
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Start up operations and power the satellite when it's out of sunlight.
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The most important thing for having a successful space mission is...
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Talented and cooperative people
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A necessary constraint of every orbit around the Earth is that...
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It's orbital plane passes through the center of the Earth.
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