Exam (elaborations)
ASCBC PHASE 1 PART 1 QUESTIONS AND ANSWERS
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ASCBC PHASE 1 PART 1 QUESTIONS AND ANSWERS
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Name: Score:86 Multiple choice questions
Term 1 of 86
Military systems that can be degraded by space weather:
- atmospheric drag
- spacecraft charging
- computer logic errors
- scintillation
- radiation damage
- HF comms
- SATCOM (UHF, SHF)
- Radar systems
- GPS navigation
- Missile warning
- CYBERCOM
- STRATCOM
- TRANSCOM
- SOCOM
- heat/pressure energy; cold gas, liquid chemical, solid chemical, nuclear thermal
Term 2 of 86
What is the role of the USASMDC Commander, as the Army Service Component Commander
to USSTRATCOM?
- Microwave
Frequency
Space Commission Report
Force provider
,Term 3 of 86
Scintillation
- Solar: most common for earth-orbiting spacecraft
- Chemical systems: most common for crewed spacecraft
- Nuclear systems: radioisotope thermoelectric generators
Sun appears directly behind a GEO COMSAT
- Twice a year
- Effects military systems' downlink, GEO COMSATs, data loss, auto-tracking antennas
- Mitigation: disable auto-track, shift to alternate comms path
Orbit tilt; tilt of the orbital plane with respect to the equatorial plane
Inclination (i)
Equatorial: i = 0 or 180
Polar: i = 90
Prograde: 0 < i < 90
Retrograde: 90 < i < 180
energetically charges particles trapped in the earth's magnetosphere as a result of
geomagnetic storms propelling the charged particles back towards the earth
Term 4 of 86
Which plane maneuver is the easiest to accomplish?
In-plane! Parallel, in-plane maneuvers are more effecient
Peterson AFB, Colorado Springs, Bldg. 3
- Determines max latitude of ground trace
- Same degree North/South of equator
- Fulfills Congressional Mandate
- DoD directive
- Provides efficiencies for the Army
,Term 5 of 86
Solar Conjunction
Low Earth Orbit
Description: small (many) inexpensive satellites to provide wide coverage
- Altitude: 200-900 miles
- Period: 90-120 minutes
Subcategories:
* Polar orbit (cap-to-cap)
- True Polar orbit - 90 inclination
- Near polar orbit - 82-98 deg
* Sun-synchronous
- Near-polar inclination (96-98 deg)
- Wx / Imagery
- Same sun angle every day
- Provides abilitity to analyze shadows to measure elevation
- Consistent overflight to same location daily
Missions:
- Imagery
- Weather
- Manned
Orbit tilt; tilt of the orbital plane with respect to the equatorial plane
Inclination (i)
Equatorial: i = 0 or 180
Polar: i = 90
Prograde: 0 < i < 90
Retrograde: 90 < i < 180
Sun appears directly behind a GEO COMSAT
- Twice a year
- Effects military systems' downlink, GEO COMSATs, data loss, auto-tracking antennas
- Mitigation: disable auto-track, shift to alternate comms path
energetically charges particles trapped in the earth's magnetosphere as a result of
geomagnetic storms propelling the charged particles back towards the earth
, Term 6 of 86
Greatest effects on LEO spacecraft during period of increased solar activity
- 1958
- US Army
- Explorer 1
- House
- Protect
- Provide mounting surface
Monitor/adjust position & velocity
Atmospheric drag - de-orbit / slows down
Term 7 of 86
Launch inclination:
range of frequencies that make up a signal
20 degrees
Van Allen Belts
- Microwave
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