PC 3 Study Guide Flashcards

1
Q

What is the movement of a satellite due to changing mission requirements?

A

Station Changing

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2
Q

What are small maneuvers that may be needed at regular intervals to keep a satellite in its desired position?

A

Station Keeping

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3
Q

What orbit is used by maneuvering a satellite to an unused orbit where it will not affect other satellites at end of life?

A

Disposal Orbit

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4
Q

Maneuvering a satellite to re-enter the atmosphere and burn up is called what?

A

De-Orbit

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5
Q

What maneuvers will speed up or slow down the satellite, altering the semi-major axis and eccentricity of the orbit?

A

In-Track

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6
Q

A radial maneuver will change what COEs of an orbit?

A
  • Argument of Perigee
  • Eccentricity
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7
Q

What maneuvers alter the inclination and RAAN of an orbit?

A

Cross-Track

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8
Q

Hohmann transfers require how many in-track maneuver(s) to move from one circular orbit to another circular orbit?

A

2

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9
Q

A maneuver that can change a satellite’s inclination or RAAN without changing the semi-major axis, eccentricity, or argument of perigee is known as what?

A

Simple Plane Change

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10
Q

What occurs during the second burn of a Hohmann transfer, usually at the apogee of the transfer orbit?

A

Combined Plane Change

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11
Q

In order to complete a rendezvous, what two variables must be known?

A
  • Burn
  • Timing
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12
Q

What is the difference in mean motion, used to describe how quickly two satellites are moving relative to each other?

A

Drift Rate

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13
Q

What rendezvous would be used for two satellites in the same orbit, but with different true anomalies?

A

Co-Orbital

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14
Q

A co-orbital chaser satellite is behind a RSO along their velocity vector must fire what kind of in-track burn in order to catch up to the RSO?

A

Negative

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15
Q

A phasing orbit can be used to alter what between two satellites?

A

Angular Distance

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16
Q

A co-orbital chaser satellite is ahead a RSO along their velocity vector must fire what kind of in-track burn in order to catch up to the RSO?

A

Positive

17
Q

To conduct a co-planar rendezvous, two satellites must have the same what?

A

Inclination and RAAN

Note: And a different semi major axis

18
Q

The most fuel-efficient method to get from one orbit to the other during a co-planar rendezvous would be what?

A

Hohmann Transfer

19
Q

What rendezvous is required when the RSO or final orbital slot is on a different plane?

A

Plane-Matching

20
Q

2 Part Question

When conducting a Plane-Matching Rendezvous, what fuel is used when the spacecraft is going slower, usually at where of a transfer orbit?

A
  • Less
  • Apogee