Chapter 4 UREs Flashcards
- (019) The Atlas V common core booster’s aft transition structure provides
A. protection for the engine during flight.
B. mounting for the booster’s adapter skirt.
*C. mounting for up to five solid rocket boosters.
D. environmental protection for the vehicle’s batteries.
- (019) The Atlas V common core booster has two propellant tanks containing
*A. rocket propellant (RP)-1 and liquid oxygen.
B. liquid hydrogen and liquid hydrazine.
C. liquid oxygen and liquid hydrazine.
D. RP-1 and liquid hydrogen.
- (019) When the Atlas V centaur upper stage’s propellant tanks are empty they must be
A. removed and pressure tested.
B. bonded in foam to minimize ice formation.
*C. pressurized to maintain structural integrity.
D. wrapped in an insulation blanket to keep moisture out.
- (020) What is a satellite’s structure designed to provide?
A. Framework for uniform distribution of satellite subsystem components.
B. Flexible but durable platform for payload instruments and subsystems.
*C. Strong, stable platform for payload instruments and subsystems.
D. Secure anchor for attachment of the payload fairing.
- (020) Thermal insulation is designed to
A. reflect heat energy away from a satellite.
*B. reduce the rate of heat loss from a satellite.
C. reduce the amount of material changing phases.
D. conduct heat away from a component to be controlled.
- (020) What is used on a satellite to transport heat energy from internal equipment to a remote radiator surface?
*A. Chemical fluids such as ammonia.
B. Chemical fluids such as hydrazine.
C. Conductive surfaces such as silver.
D. Conductive surfaces such as copper.
- (020) The electric heaters on a satellite operate when
A. heat sinks cannot compensate for heat loss.
*B. radio commands are received from a satellite control facility.
C. a preset time is reached.
D. maximum temperatures are reached.
- (020) Why are liquid propellant systems used a majority of satellites?
A. Once ignited, they burn at a nearly constant rate.
*B. Satellite controllers can fire them multiple times.
C. Liquid propellants are cheaper than solid propellants.
D. They compensate for fuel loss during stabilizing spins.
- (020) Controlling a satellite’s attitude is required to ensure
A. propulsion systems function properly.
*B. instruments are pointing in the right direction.
C. it remains in geosynchronous orbit around earth.
D. its solar panels are already facing away from the sun.
- (020) Satellite attitude and spin adjustments are provided by using
A. as on-board inertial upper stage booster.
B. squid activated gas generators.
C. linear solar array panels.
*D. on-board thrusters.
