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The mechanism of working of a nuclear device and the devices that ensure safety of nuclear weapons in the U.S.
Safe use of nuclear weapons by the United States Air Force. A nuclear bomb on a trailer. a C-119 aircraft takes off in background. An animation shows the nuclear material used in weapons. Fissionable material is surrounded by a layer of high explosives.. Detonators being fired simultaneously at the edges of the high explosives causes implosion that exerts pressure on the fissionable material, causing it to compress into a critical mass that results in nuclear explosion. In an event in which the high explosive, itself, is accidentally ignited, it will burn unevenly, and not provide the uniform circumferential pressure needed to cause the core of nuclear material to compress into a critical mass, even though it may be broken up and scattered.. Various safety features of a nuclear weapon. A battery which provides current, armed switch which controls the flow of current. Thermo fuses which ensure protection against fire. Various mechanical devices like safety pins and wires with seals also ensure safety of nuclear weapons and prevent untimely detonation.
U.S. Air Force personnel handling nuclear weapons.Technicians being examined for reliability
Safe use of nuclear weapons by the United States Air Force. A Sergeant (E4) technician works on a nuclear bomb as a Technical Sergeant (E6) supervisor looks on. A Quality Assurance Evaluator takes notes. The technician reacts angrily after dropping a T304C Continuity Tester and his supervisor corrects him. The technician is then questioned by a doctor to ensure his reliability for a nuclear program. Men around an aircraft as a trailer carries a nuclear bomb near the aircraft. The bomb being attached under the fuselage of the plane. Men work in groups using the two men concept to assure that no individual is ever in a position to arm, launch, or detonate a nuclear weapon.
Air Force personnel receive and decode messages; sound an alert; deploy bomber aircraft during drill in the United States.
Nuclear weapon safety strategies employed by the United States Air Force during the Cold War. Shows aircraft alert training drills related to launch of nuclear weapons. U.S. Air Force personnel work on the controls in a control room of an air base. Men answer phone calls. An alert order being received in a coded language. An alarm being sounded and airmen scramble and run from their rooms and billiards table to the aircraft at the base. Crew members enter waiting bomber aircraft and put on their flight gear and breathing apparatus. Controllers decode the message separately and then compare it. Aircraft commanders being instructed. A cocoa alert being sounded and aircraft taxi along a runway. Scene shifts to aerial view of a U.S. Air Force B-52 bomber aircraft in flight, which narrator indicates is among aircraft that are airborne at all times and prepared to proceed to a target. View of pilot and copilot in the cockpit of the B-52 bomber aircraft. Aerial view of B-52 aircraft banking to right side. View of different crew members such as bombardier and navigator in B-52 aircraft as they separately confirm interpretation of an incoming message. View of Republic F-105 Thunderchief aircraft parked readying for takeoff on runway. Another fighter aircraft preparing for takeoff (F-11 ?). A surface missile being readied for launch. A missile being launched from an underground missile silo, taking off and emitting a fiery flare.
U.S. Air Force missile Launch Crews in Minutemen missile silos. Safety provisions and procedures.
Air Force missile crews in a Minuteman missile silo. An African American crew member seated at a desk. Each launch team must perform the same procedures to prepare and launch any missile. Instructions are encoded and confirmed before any actions are initiated. Each crewman must independently insert a key before launch can take place. Moreover, other crews in other locations are alerted and can stop the other crews launch activity by turning on an inhibit system, in their own location. Controllers operate simultaneously. Tight security measures at the control site as a guard checks identity cards of the controllers. United States Air Force officers at a meeting. They conduct a safety study. A technician undergoes a human reliability program. Tight security measures being implemented. A United States Air Force plane in flight.
Women work in various fields and Jessie Bernard and Edna Rostow discuss about the life style of women in the United States.
The film 'American Women and the social change-women and their family' about working women in the United States in new roles that do not fit traditional homemaker and housewife stereotypes, or that were traditionally jobs held by men. Women walk across a street. A woman laughs. Women practice dance. A woman works as a dentist. Two women bird trainers. A woman plays a violin and another woman sings. A woman officer takes an oath. A woman teaches. A woman works on equipment. A woman in a meeting. Women work in a workshop. A woman paints. A woman looks into a microscope. A doctor checks a child. American sociologist Jessie Bernard of the National institute of Education talks to Edna G. Rostow, a mental hygiene consultant at the Yale University, about the change in the life style of women and the reason behind it.
Jessie Bernard and Edna Rostow about discuss old traditions responsible for changes in the life of women in the United States.
A film about problems faced by working women in the United States. American sociologist Jessie Bernard and Edna G. Rostow, a mental hygiene consultant at the Yale University, discuss about old traditions responsible for the changes in the life of women and the democratic values that an American family inculcates in children. They talk about freedom given to American women and the difference in the environment in which they grow up from that in the rest of the world.