OEM Flashcards
1
Q
- __________ is the movement of a satellite due to changing mission requirements.
A
STATION CHANGING
2
Q
- _________ are small maneuvers that may be needed at regular intervals to keep a satellite in its desired position.
A
STATION KEEPING
3
Q
- A ________ orbit is used by maneuvering a satellite to an unused orbit where it will not affect other satellites at end of life.
A
DISPOSAL
4
Q
- Maneuvering a satellite to re-enter the atmosphere and burn up is called ___________.
A
DE-ORBIT
5
Q
- ___________ maneuvers will speed up or slow down the satellite, altering the semi-major axis and eccentricity of the orbit.
A
IN-TRACK
6
Q
- A radial maneuver will change the _________ and ___________ of an orbit.
A
ECCENTRICIT,ARGUMENT OF PERIGEE
7
Q
- ____________ maneuvers alter the inclination and RAAN of an orbit.
A
CROSS-TRACK
8
Q
- Hohmann transfers require ____ in-track maneuver(s) to move from one circular orbit to another circular orbit
A
2
9
Q
- A maneuver that can change a satellites inclination or RAAN without changing the semi-major axis, eccentricity, or argument of perigee is known as ________________.
A
SIMPLE PLANE CHANGE
10
Q
- ____________ occurs during the second burn of a Hohmann transfer, usually at the apogee of the transfer orbit.
A
_COMBINED PLANE CHANGE
11
Q
- In order to complete a rendezvous, two variables must be known: ____________.
A
burn & timing
12
Q
- __________ is the difference in mean motion, used to describe how quickly two satellites are moving relative to each other.
A
DRIFT RATE
13
Q
- _________ rendezvous would be used for two satellites in the same orbit, but with different true anomalies.
A
CO-ORBITAL
14
Q
- A co-orbital chaser satellite is behind a RSO along their velocity vector must fire a ________ in-track burn in order to catch up to the RSO.
A
NEGATIVE
15
Q
- A phasing orbit can be used to alter the ______________ between two satellites.
A
ANGULAR DISTANCE
16
Q
- A co-orbital chaser satellite that is ahead of a RSO along their velocity vector must fire a ___________ in-track burn in order for the RSO to catch up.
A
POSITIVE
17
Q
- To conduct a co-planar rendezvous, two satellites must have the same __________, and a different semi-major axis.
A
INCLINATION_ and ___RAAN
18
Q
- The most fuel-efficient method to get from one orbit to the other during a co-planer rendezvous would be a ______________.
A
HOHMANN TRANSFER
19
Q
- ___________ rendezvous are required when the RSO or final orbital slot is on a different plane.
A
PLANE MATCHING
20
Q
- When conducting a Plane-Matching Rendezvous, _________ fuel is used when the spacecraft is going slower, usually at apogee of a transfer orbit
A
LESS
21
Q
A
