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After the lift, stability and control problems were solved, a propulsive system was needed to make the aircraft fly. The first propulsion device - the propeller - is still in use today. Dr. Lippisch explains the design of the propeller and demonstrates the lifting propeller - the Helicopter Rotor.
Discusses and demonstrates the problem of drag created by friction and turbulence. Explains the need for a high ratio of lift to drag' to produce an aircraft with good performance characteristics. Illustrates with diagrams and models in the wind tunnel, also uses high speed photography of air movement over a wing in the wind tunnel. Features Dr. Alexander M. Lippisch, director of the Aeronautical Research Laboratory, Collins Radio Company.
Discusses induced drag which is directly connected with the principles of lift and demonstrates the vortex configuration caused by the wing tip. Illustrates with diagrams and models in the wind tunnel. (State University of Iowa) Kinescope.
Explains the principles of lift. Uses the smoke tunnel to demonstrate the methods developed to produce wings with high lift capacity. Discusses stalling and how it is prevented. (State University of Iowa) Kinescope.
Defines a vortex and explains its structure. Shows several types of vortex including the ring, tip and thermal vortex. Uses the smoke box, water tank, and motion pictures of tornadoes to illustrate how a vortex behaves. (State University of Iowa) Kinescope.
Dr. Dietrich Reitzes, associate professor of social psychology at the University of Indiana and a member of the US Selective Service in Felon Studies, joins Sheriff Lohman for a study of the relationship between youth’s neighborhood and his acts of misbehavior. Captain Boone presents another case study. The Sheriff and Dr. Reitzes discuss the problem of areas which seem to breed delinquency. Illustrations of houses in the shadow of commerce and industry, buildings in neighborhoods that are physically deteriorating and dangerous, neighborhoods where the population is in transition, where economic dependency is on relief agencies, where neighborhood disorganization is taking place, where the population of adult criminals is high and where gangs are common –these are all illustrated.
Man seems to have surpassed nature as he can fly faster and higher than the natural flying creatures. But further study of the flying habits of birds and insects is still necessary. Dr. Lippisch presents a discussion on the wing motion of birds and insects and how the texture and shape of the wings differ with the various birds and insects. Not only airborne animals apply the laws of fluid motion; the program also presents the propulsive systems of fish and shows the action of the fishtail-propeller in the Smoke Tunnel.
Discusses new aerodynamic problems caused by high speed flight. Explains the different flow regions corresponding to the subsonic, transonic, and supersonic velocities. Demonstrates the generation of shock waves in supersonic flow. Shows filmed sequences of supersonic flow configurations. Points out and demonstrates the basic concept of the newest development in wingless aircraft, the Aerodyne. (State University of Iowa) Kinescope.
Huston Smith interviews Dr. Bertram Beck and Dr. Margaret Mead at the American Museum of Natural History, on the subject of our country’s alarming rise in violence and deviant behavior. Are other countries witnessing comparable increases in crime? What are the causes of the rise in America, and what can be done about the situation? Special attention is given to the new problem of suburban delinquency.
Dr. Joel Hildebrand discusses the laws of men and nature. Provides examples of conservation of mass and energy. Explains the gas laws and how gases behave. Defines "principles" and "rules" and how they differ from "laws." (KQED) Film.