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ARMY SPACE CADRE COURSE EXAM 1 QUESTIONS AND ANSWERS
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ARMY SPACE CADRE COURSE EXAM 1 QUESTIONS AND ANSWERS
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Name: Score:131 Multiple choice questions
Term 1 of 131
What are the greatest effects on LEO spacecraft during a period of increased solar activity?
Geomagnetic storms
Atmospheric drag
Air force
Radiation
Term 2 of 131
What boosting method delivers more payload to orbit for a given sized launch vehicle? Why?
Charged particles continuously emitted from the sun.
UHF communications (SATCOM and GPS)
United Launch Alliance (ULA) - 2006
Space X - 2015
-Staging
-It allows us to offload unneeded mass.
Term 3 of 131
Ion thruster are primarily used for __________ and ___________.
GEO satellite station keeping and interplanetary missions
Suborbital flights and cargo transport
Planetary landings and atmospheric studies
Low earth orbit launches and space debris removal
,Term 4 of 131
In-plane manuevers only change the ________
Orbits size (semi-major axis)
The speed of the satellite in its orbit.
The satellite's altitude above the earth.
The angle of the satellite's orbit relative to the equator.
Term 5 of 131
LEO sub-categories
How long the satellite takes to go around the Earth one time is proportional to the orbit
size.
-high latitude communication (MILSAT)
-missile warning
Inclination: varies
Eccentricity: near zero
Altitude: 22,300 miles
Period: 24 hours circular
Polar orbit: near polar, 82-98 degrees
Sun-Synchronous: 300-500 miles, 96-98 degrees
Term 6 of 131
(T/F) The radio frequency portion of the EM spectrum is uncrowded and has room for growth.
Surveillance radar
False - It's packed!
It uses the minimum amount of fuel.
deceleration
heat
,Term 7 of 131
What is the length of a typical solar cycle?
11 years
8 years
12 years
10 years
Term 8 of 131
What is FM 3-14?
-Establishes guidance for employing space capabilities to support Unified Land
Operations (ULO).
-Describes Army space forces, their roles, and responsibilities.
How long the satellite takes to go around the Earth one time is proportional to the orbit
size.
-GPS
-Intel collection
-HF communication,
-SATCOM (UHF/SHF) in space and on ground
-Radar systems
1) Position, navigation, and timing (PNT)
2) SATCOM
3) Intelligence, Surveillance, & Reconnaissance (ISR)
4) Missile Warning
5) Environmental monitoring
, Term 9 of 131
In 1946, how did project Diana prove we could send signals through the Earth's Ionosphere
thus providing the theory that we could communicate with Satellites and track missiles above?
Ballistic missile program
-Radiowaves could penetrate the ionosphere.
-Radio communication w/satellites
-Radar tracking of satellites and ballistic missiles.
-satellite launches and manned missions
-advantages: high thrust, can throttle
-disadvantages: explosive, needs an oxidizer w/ fuel and be kept cold.
-SOCOM: Special Operational Command
-STRATCOM: Strategic Command
-TRANSCOM: Transportation Command
-CYBERCOM: Cyber Command
Term 10 of 131
Describe The Van Allen belts.
-Charged particles emitted from the sun trapped by Earth's magnetic field.
-Expand and contract based on suns activity.
-Potentially harmful to satellite s due to radiation in HEO orbit.
-atmospheric drag
-computer logic errors
-radiation damage
-spacecraft charging
-scintillation
-charged particles
-electromagnetic radiation
Charged particles continuously emitted from the sun.
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