Show Show Explains Of Jet Propulsion Jet propulsion which has enabled enabled enabled en en- some airplanes planes to travel faster than the speed of oC sound is over o 2200 years ears old AND WHAT'S more jet propulsion propulsion propulsion pro pro- is not so different to understand after having seen Previews of oC Progress the famed famed fam lam ed cd General Motors science stage show which was presented at South Davis and Bountiful Junior Jun ion High last week The principle of oC jet propulsion was just one of the scientific demonstrations i c call a I 11 1 y presented and explained in understandable understandable un un- terms during the minute 45 ute show DESIGNED to stimulate interest interest interest inter inter- est in research and engineering two two fields in wl which ch there is isa isa isa a growing need for or trained personnel per per- Previews Previews seeks lo 10 inspire inspire in in- spire students to science care care- ers Mr 11 Winters one of two traveling traveling traveling trav trav- eling lecturers explained the origin of oC jet propulsion b by demonstrating demonstrating demonstrating dem dem- a replica of oC the acoU pile invented about B B. B C. C by bythe bythe bythe the Greek pJ philosopher Hero The or Ball BaIl of or the Winds uses steam as an energy source and is generally regarded as the worlds world's first known jet engine en en- gine TIrE THE AUDIENCE was quickly returned to the twentieth century century cen cen- tury by the non miniature roar of a tiny pulse jet engine which has been the delight of oC young and old from coast to coast The jet age was brought up-to-date up with a demonstration of one of oC the most recent applications of jet propulsion the propulsion the gas turbine engine wl which ch used in the Firebird Firebird Firebird Fire Fire- bird in ill experimental gas turbine turbine turbine tur tur- bine car I 1 Eight other demonstrations of new developments in science and engineer were included in inthe inthe inthe the moving fast stage show This is one of seven teams presenting presenting pre pre- Previews of Progress to nearly two million persons each year car in all sections of the United States |