1C651 Vol.4

1. (601) Which 24 satellite constellation provides navigation and timing information to military and civilian users worldwide?

Military Strategic and Tactical Relay (Milstar).

Global Positioning System (GPS).

Wideband global satellite communication (SATCOM) system (WGS).

Defense Meteorological Satellite Program (DMSP).

2. (609) Which orbit is used to place a satellite that is no longer working?

Transfer.

Near earth.

Disposal.

Rendezvous.

3. (601) Which system was National Aeronautics and Space Administration's (NASA) attempt atballoon communications?

Echo.

Score.

Milstar.

Telstar.

4. (609) Which type of reentry is used to minimize the risk of injury to civilian populations?

Retrieval.

Controlled.

Unscheduled.

Uncontrolled.

5. (607) Which antenna tracking method uses a joystick to control the antenna?

Autotrack.

Slave mode.

Forced track.

Manual track.

6. (609) Which action corrects a satellite period, inclination, and argument of perigee?

Station keeping maneuver.

On-orbit reconstitution.

End of life operations.

Disposal.

7. (615) What system gives China worldwide coverage independent of foreign control?

Iridium.

Beidou.

Meridian.

Global Navigation Satellite System (GLONASS).

8. (604) Which rocket motor is simple to build, cheaper to produce, and provides additional thrust at liftoff?

Ion engine.

Gas-propellant.

Solid-propellant.

Liquid-propellant.

9. (607) Which antenna tracking method uses ephemeris loaded into a computer to generate antenna pointing angles?

Manual track.

Forced track.

Slave mode.

Autotrack.

10. (611) Which area of the earth has a stronger gravitational pull on a satellite?

Hill.

Lake.

Ravine.

Mountain.

11. (613) Which medium-lift rocket launched the first dog into space?

Zenit.

Dnepr.

Soyuz.

Proton.

12. (601) Which system was the first multi-national funded communications satellite positioned over the Atlantic Ocean?

Echo.

Score.

Milstar.

Telstar.

13. (603) In what common method of solar cell construction are the solar cell edges overlapped?

Flat mounting.

Body mounting.

Paddle mounting.

Shingle mounting.

14. (606) Which subsystem keeps a satellite within certain temperature limits?

Propulsion.

Electrical power.

Thermal control.

Telemetry, tracking, and control.

15. (608) Which Defense Meteorological Satellite Program's (DMSP) space environment sensor measures geomagnetic fluctuations associated with geophysical phenomena?

Pitch.

Crosslink.

Magnetometer.

Temperature profiler.

16. (610) How often is ranging conducted on each satellite?

At least once a day.

Scheduled once a week.

Only when the satellite is maneuvered.

Only when tasked with a command support.

17. (603) Which is a power storage component in the electrical power subsystem?

Solar arrays.

Rechargeable batteries.

Solar array drive assembly.

Radioisotope thermoelectric generators.

18. (604) Which is not an ideal characteristic of liquid-propellants?

Low freezing point (wide range of operation).

Low heat of combustion per unit of propellant mixture.

Low toxicity and corrosiveness (easy handling and storage).

Large availability of raw materials and ease of manufacture.

19. (604) What is a rough measure that calculates how fast a rocket can travel by how fast propellant is ejected out of the back of the rocket engine?

Specific density.

Specific impulse.

Hygroscopicity.

Ignition uniformity.

20. (609) Which object is considered obscura for a sensor's line-of-sight (LOS)?

Cow in a pasture.

Metal fencing around radar.

Antenna nearby emitting radio frequency (RF) energy.

A mountain range with an elevation of 9,500 feet.

21. (612) Which system can detect what is underneath solid objects?

Visible.

Infrared.

Signals intelligence (SIGINT).

Synthetic aperture radar (SAR).

22. (615) Which Russian national satellite system has two levels of services, the primary service being solely for their military?

Iridium.

Meridian.

Meteosat.

Global Navigation Satellite System (GLONASS).

23. (602) Which main part of a satellite houses those systems that perform the primary mission?

Satellite bus.

Communications/payload.

Structures and mechanisms.

Telemetry, tracking, and control.

24. (603) Which effect occurs when a solar cell converts sunlight into electricity?

Gyroscopic.

Photoelectric.

Thermoelectric.

Electromagnetic.

25. (606) What type of thermal control subsystem does not consume energy and possesses none or few moving parts?

Active.

Passive.

Radiators.

Cryogenic.

26. (609) What is the elevation of an object that is directly overhead the tracking station?

45°.

90°.

120°.

180°.

27. (613) Which launch agency uses the Soyuz and the Vega as their primary launch vehicles?

Arianespace.

Guiana Space Center.

China National Space Administration.

Japan Aerospace Exploration Agency.

28. (613) Which space agency only launches into a retrograde orbit due to overflight of Arab countries?

Guiana Space Center.

Israeli launch facility.

Indian Space Research Organization.

Japan Aerospace Exploration Agency.

29. (603) What type of battery is used as a continuous energy source and cannot be recharged?

Primary.

Secondary.

Tertiary.

Fuel cell.

30. (603) What component is the heart of a fuel cell by generating electricity in the form of direct current?

Heat recovery.

Fuel cell stack.

Fuel processor.

Current inverters and conditioners.

31. (604) Which is not an ideal characteristic of solid-propellants?

High density.

Hygroscopic.

Safe and easy to handle.

Smokeless and flashless.

32. (606) What thermal control subsystem components are activated by temperature sensing transducers?

Vanes and louvers.

Mirrors and louvers.

Vanes and sun shields.

Mirrors and sun shields.

33. (607) What tracking method is a precise digital ranging signal modulated onto the uplink carrier?

Passive.

Passive beacon.

Beacon transponder.

Pseudo-random noise.

34. (614) Which location is ideally suited to launch satellites into polar and retrograde orbits?

White Sands Missile Range.

Poker Flats Research Range.

Vandenberg Air Force Base.

Cape Canaveral Air Force Station.

35. (614) What is accomplished during the post-launch phase?

The mobile service tower is rolled away from the vehicle and secured.

Fire and safety personnel inspect the launch pad for fire and safety hazards.

A final check of the vehicle and vehicle power is switched to internal power.

A simulated flight verifies all functions from engine ignition to payload separation.

36. (601) Which satellite system is managed by Defense Information Systems Agency (DISA)?

Global Positioning System (GPS).

Wideband global satellite communication (SATCOM) system (WGS).

Defense Meteorological Satellite Program (DMSP).

Defense Satellite Communications System (DSCS).

37. (601) Which satellite system uses the government's allocated 500 Megahertz of X-band and 1 Gigahertz of Ka-band spectrum?

Military Strategic and Tactical Relay (Milstar).

Global Positioning System (GPS).

Wideband global satellite communication (SATCOM) system (WGS).

Defense Satellite Communications System (DSCS).

38. (601) The recurrence of global weather monitoring with the combination of day/night and dawn/dusk coverage is every

Two hours.

Four hours.

Six hours.

12 hours.

39. (602) Which is not part of the structures and mechanisms subsystem?

Booms used to deploy solar arrays.

Space launch vehicle’s payload fairing.

Components connecting various satellite sections together.

Equipment for separating the satellite from the launch vehicle.

40. (602) Which type of stress is the satellite's structure subject to during handling and stacking sequences?

Testing.

Transport.

Pre-launch.

Manufacture.

41. (604) What type of liquid propellant adds a catalyst to increase the speed of reaction?

Bipropellant.

Tripropellant.

Solid propellant.

Monopropellant.

42. (607) What is the process of pointing the ground antenna at a satellite that is emitting a signal?

Tracking.

Acquiring.

Maneuvering.

Commanding.

43. (609) TEARR data is used immediately after a launch to gather information to determine the

Early orbit determination.

Weekly scheduling data.

Line of sight solution.

Re-entry assessment.

44. (609) What is the result when data from two objects that might collide is inserted into a modeling program?

Satellite Catalog (SATCAT).

Early Orbit Determination.

Time of Closest Approach (TCA).

Calculated Time of Approach.

45. (610) How is a pseudorandom noise (PRN) pattern generated for use in the ranging calculation?

JSpOC generates it.

Orbital analyst creates it.

Space operator creates it.

Automated Remote Tracking Station’s (ARTS) tracking, range, and rate receiver (TRR) ground station equipment creates it.

46. (601) What satellite system uses a type of spread spectrum that repeats switching of frequencies during transmission?

Military Strategic and Tactical Relay (Milstar).

Global Positioning System (GPS).

Wideband global satellite communication (SATCOM) system (WGS).

Defense Satellite Communications System (DSCS).

47. (603) What is used to protect solar cells from radiation damage?

Sun shields.

Special mirrors.

Thermal blankets.

Layers of quartz or sapphire.

48. (608) What is the rotational movement of a body that occurs about the longitudinal axis through the body?

Yaw.

Roll.

Stall.

Pitch.

49. (612) Which National Reconnaissance Office (NRO) payload is used for "heat scaring"?

Visible.

Infrared.

Signals Intelligence.

Synthetic Aperture Radar.

50. (613) Which launch provider has launch sites in the Marshall Islands and Kwajalein Atoll, and is headquartered in El Segundo California?

SpaceX.

Boeing.

Lockheed Martin.

Orbital Science Corporation.

51. (615) This Japanese civil satellite system has a figure eight orbit so that there is always a satellite positioned over Japan.

Iridium.

Galileo.

TerraSAR-X.

Quasi-Zenith Satellite System.

52. (611) Which type of maintenance is in charge of monitoring backup equipment to make sure it is ready for failover?

Payload maintenance.

User systems maintenance.

Space systems maintenance.

Ground system maintenance.

53. (615) What system warns of potential trouble spots around the world and monitors the environment?

Iridium.

Galileo.

National Reconnaissance Office (NRO) satellites.

United States Tracking and Data Relay system.

54. (605) What machine is a self-contained navigation system capable of determining a vehicle's position in inertial space through the double integration of the output of accelerometers?

Gyroscope.

Axis generator.

Computer processors.

Inertial navigation unit.

55. (609) To minimize a satellite's cross-section to avoid a collision you change its

Altitude.

Azimuth.

Range rate.

Inclination.

56. (610) The ground station measures the distance of an object when the wave is reflected by multiplying the

Distance by speed of sound.

Distance by half the speed of sound.

Time by speed of light.

Time by half the speed of light.

57. (611) How does a control center contact the space system to perform command and control functions?

Laser tracking.

Program tracking.

Phased array tracking.

Remote radio frequency (RF) tracking.

58. (612) What happens to the resolution and swath width of a satellite in a larger orbit?

Swath gets wider; resolution is lower.

Swath gets wider; resolution is greater.

Swath gets smaller; resolution is greater.

Swath gets smaller; resolution is lower.

59. (614) Which launch site allows for successful prograde and geosynchronous equatorial orbits?

Western Range.

Cape Canaveral.

Wallops Flight Facility.

Kodiak Launch Complex.

60. (614) At the 1st Range Operations Squadron, which of the following is not a 1C6X1 generation duty?

Preparing a mission folder.

Making the Go/No-Go decision.

Updating the launch support plan.

Conducting a launch readiness review.

61. (609) Which element of TEARR data uses the Doppler shift?

Time.

Azimuth.

Range.

Range rate.

62. (610) Which squadron maintains the schedule for ranging supports of all Air Force Satellite Control Network Satellites?

19 Space Operations Squadron (SOPS).

21 SOPS.

22 SOPS.

23 SOPS.

63. (611) Which limit is set so that a satellite does not reach the maximum amount of drift in any direction?

Hard.

Soft.

Medium.

Intermediate.

64. (612) Which squadron operates the advanced extremely high frequency (AEHF) platform?

1 Space Operations Squadron (SOPS).

3 SOPS.

4 SOPS.

6 SOPS.

65. (604) What type of double-base-propellant has both an oxidizer and a fuel?

Composite.

Homogenous.

Heterogeneous.

Non-hygroscopic.

66. (605) What type of attitude control occurs when the interaction between the satellite and the environment produce natural stabilizing torque?

Passive control.

Spin stabilization.

Solar wind stabilization.

Active closed-loop control.

67. (607) What tracking method uses the ground equipment to transmit equally time-spaced pulses to the satellite?

Passive.

Passive beacon.

Beacon transponder.

Pseudo-random noise.

68. (608) What is the data rate transmission on the Milstar payload?

1,200 bits per second.

2,400 bits per second.

4,800 bits per second.

9,200 bits per second.

69. (613) In what year did the first evolved expendable launch vehicle (EELV) successful launch occur?

2001.

2002.

2003.

2004.

70. (614) At the 2d Range Operations Squadron, which of the following is not a 1C6X1 execution duty?

Ensures all special use airspace is clear and controlled.

Ensures aircraft are available for post-mission operations.

Reports any violation of special use airspace by unauthorized aircraft.

Provides mobile sensors and aeronautical assets with countdown status updates.

71. (614) What terminal countdown sequence includes last minute mechanical and electrical installations and vehicle securing?

Final countdown.

Integrated testing.

Ignition and liftoff.

Final status check.

72. (610) What portion of the signal is sent back to the ground station during satellite tracking?

Carrier wave.

Psuedorandom noise (PRN).

Space control, space force enhancement.

Electromagnetic radiation (EMR) pulse.

73. (608) Which wideband global SATCOM (WGS) system provides for X- and Ka-Band repeaters as well as X- and Ka-Band beacons, and a baseband digital switch?

Payload.

Satellite bus.

Structures and mechanisms.

Telemetry, tracking, and control.

74. (614) Which space wing conducts sea-launched ballistic missile (SLBM) launches toward Ascension Island?

21 Space Wing.

30 Space Wing.

45 Space Wing.

50 Space Wing.

75. (615) Which single satellite system has a revisit period of 11 days?

Galileo.

Meridian.

TerraSAR-X.

Quasi-Zenith Satellite System.

76. (615) Which satellite system covers National Aeronautics and Space Administration's (NASA) most critical low earth orbiting missions?

Skybox.

DIRECTV.

TerraSAR-X.

Tracking and Data Relay Satellite (TDRS) system.

77. (608) This subsystem of the Milstar payload sensor provides the downlink used to receive satellite telemetry?

Payload Software.

Payload Integration.

Super high frequency (SHF).

Extremely high frequency (EHF).

78. (614) What 1C6X1 duty is unique to the Western Range?

Laser operations.

Launch operations.

Ballistic missile testing.

Aeronautical operations.

79. (611) Which maintenance support personnel take care of the files so that commanding can be performed?

Mission planners.

Orbital analysts.

Vehicle and system operators.

Vehicle and system engineers.

80. (614) Which squadron supports the fueling and mating of the satellite on the launch vehicle?

4th Space Launch Squadron.

5th Space Launch Squadron.

45th Launch Support Squadron.

1st Air and Space Test Squadron.

81. (608) Which component is not part of the payload system?

Fairing.

Satellite.

Platform.

Inertial navigation unit.

82. (612) Which squadron operates the Operationally Responsive Space–1 (ORS–1) payload?

1 Space Operations Squadron (SOPS).

1 Space Experimentation Squadron (SES).

3 SOPS.

3 SES.

83. (615) Which geostationary satellite system has four spacecraft all performing different missions?

Skybox.

Meridian.

Meteosat.

Fengyun.

84. (614) Which squadron supports the X–37B spaceplane landing operations?

4th Space Launch Squadron.

5th Space Launch Squadron.

45th Launch Support Squadron.

1st Air and Space Test Squadron.

85. (614) Which squadron conducts the evolved expendable launch vehicle (EELV) operations of the Altas V and Delta IV boosters on the west coast?

4th Space Launch Squadron.

5th Space Launch Squadron.

45th Launch Support Squadron.

1st Air and Space Test Squadron.

1c651 Vol.4