Learn about the history of supersonic rocket airplane F15. Also learn about the unmanned spacecraft to the moon.
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In 1968 the F1- 11 is able to provide NASA with details of the variable sweep wing characteristics of super sonic transport. The study speeds an exes of 3500 miles per hour the hyper sonic X-15 rocket airplane is used. The usual jet black X-15 takes on a new appearance as its painted with the special ablative coating to its stand the searing heat beyond mark 7. On October the 3rd major William Knights sets a new speed record with the newly painted rocket plane. 4534 miles per hour as usual the X-15 is carried a lap by the giant B-52. When the desired altitude is reached and X-15 drops away and maneuvers on its own. Major Michael J. Adams dies in a crash while testing the X-15 the tragedy is the first since the program began in 1959. A so called Hl-10 lifting body is successfully tested this year. Lifting body craft are being studied as a possible means of flying future space craft back to Earth after a mission, rather than parachuting into the ocean. The study design will allow an astronaut to maneuver his space craft back through the Earth atmosphere and then land like a conventional airplane. In 1968 jet air craft noise is a worldwide problem. While studies are going on to improve existing engines 1:40 are on the way; to produce a completely new engine design to be quire. Also a especially instrumental jet is being operated in a way to decrease the ground exposure to noise. This involves flying the plane in to the speed approach and letting the distance reduce the noise on the ground. Eventually all the known noise reduction techniques will be combined in an epic to produce a truly quite engine. By 1968 the moon not merely as mysterious as it use to be has been photograph landed on dogging to an chemical sample. Sevea 7 is the last in the series of an man space craft to land there. 5 out of the 7 sevea’s launch landed successfully on the moon and operated on the surface. The sevea photograph showed that to land the man on the surface of the moon without sinking into any great depth is a reasonable under taking. The photo shows that to be few of large rocks in certain areas. But the numerous small craters would have to be contended with. The actual surface material is found to be very similar to a vessel found here on Earth. NASA’s jet proportion of bar 3 is also applying its scientific know how to must. Flying by initially landing and testing In the future. The experimental model of a wheel shaped planetary landing craft is one of the several landers being considered. And an effort to learn more about the possibility of life on Mars. The lab again sense of team to the Antarctic carefully collected soil samples are subjected to regular analysis. The sun seizing interblent affecting everything on Earth. By studying it we can learn more about our own environment. Into planetary pioneer space craft of doing just that. To a launch in 1968 on 1 point in their voyage millions of miles into space they passed directly behind the sun. The day to return is being used to improve whether forecasting and adding a measure of protection to moon bound astronauts by forecasting solo activities. Also helping us learn more about the Earth’s environment is the orbiting geo-physical observatory order 5. By studying such things as our magnetic field and radiation belt solar flash and solar wind. We gain new inside into the complex sun- Earth relationship. Radio astronomy explorer one of five explorer craft space craft is launched. While ground based radio telescopes observed the short radio wave links. The RIS will make its measurements beyond the edge of the radio window. The heaviest and most sophisticated satellite to be launched in 1968 is the orbiting astronomical observatory. It has 11 telescopes that view the stars with the clarity never possible before 1968.Mapping the skies and providing a better understanding of the origin the solar system in the universe. Shortly after launch, nimbus B an experimental weather satellite plunges into

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