Chapter 4 Self Test Flashcards
(018) 2. What possible system damage can occur to the missile in a ground shock environment?
Structure failure and flyout impact with launcher due to displacement or tilt.
(018) 1. Explain the air-blast induced ground motion.
The air blast induces motion as it passes over the surface, forcing the ground down and away from the explosion.
(018) 3. What is “peak overpressure”?
The maximum value of the air blast at the blast wave front.
(018) 4. What is the basic cause of damage in an acoustic environment?
Fluctuating air pressure
(018) 5. Upon what is EMP hardness strongly dependent?
The geometry of the facility, the arrangement of the equipment inside, and the measures taken within the facility to eliminate or diminish these currents.
(018) 6. Why is the extent of EMP greatly augmented in a high-altitude burst (HAB)?
The radiation source region is enlarged to a zone about 1,000 miles in diameter. This is because gamma rays can travel many miles at high altitudes before colliding with air molecules.
(018) 7. From figure 4-8, what part of nuclear radiation is usually absorbed in the surface of the target material, releasing their energy as heat?
X-rays
(018) 8. What prevents the entry of hot gases into the underground facilities?
The protection of the facility,soil, and the seals and blast valves.
(018) 9. What factors determine the formation and size of a crater and the resulting debris?
The size of the weapon, the altitude at which it was detonated, and the condition and type of soil.
(019) 1. What ground shock control method prevents items from contacting each other?
Adequate clearance
(019) 2. How does the missile suspension and alignment system protect the missile from ground shock?
It cushions the missile from vertical and horizontal movement so during a ground shock environment, the missile does not contact the launch tube sides.
(019) 3. How are the launcher closure rails designed to keep them from bending and preventing the door from rolling off?
The steel portion of both tracks is cut through about 4 inches, approximately seven feet out from the LER.
(019) 4. What is installed in the MAF to keep harmful overpressures from entering the facility?
Blast valves are installed in the MAFs to close the ventilation ducts when overpressure is sensed.
(019) 5. Why are electronic racks the only equipment considered potentially vulnerable to radiation?
Because of the semiconductors within the electronic units.
(019) 6. What hardness features protect the electronic racks from the effects of nuclear radiation?
Internal circuit protection, transient response improvements, reset of circuit elements, and memory devices, and nuclear radiation reduction.
(019) 7. What is the design requirement for hardening against thermal effects?
Sufficient excess material be provided to allow for a certain amount of material loss to occur during multiple nuclear attacks.
(019) 8. How is the launcher closure and abutment designed to prevent metal from melting and resolidifying?
By more fiberglass insulation and also by avoiding metal-to-metal contact between parts where motion is required after an attack.
(019) 9. How is the amount of debris falling into the launch tube reduced to an acceptable limit?
A debris collection system is installed on the closure face
(020) 1. What components limit vertical and horizontal movement of the suspended floor in the the Wing 3 and 5 LSB?
The LSB floors at Wings 3 and 5 are suspended from the ceiling by 10 spring-type shock absorbers which limits vertical movement. To prevent horizontal movement, the LSB suspended floor has 20 rubber pad type shock mounts.
