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By R. S. Ryan

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Extra resources for A History Of Aerospace Problem,Their Solutions,Their Lessons

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SII Saturn V stage. 31 Figure 24. SIVB Saturn V stage. 32 Figure 25. Skylab Saturn V configuration comparison. 33 stayed in orbit for several years. If the shuttle had made its original operations goal (launch), Skylab would have been reboosted and used as a forerunner to the planned larger space station. However, this did not happen and Skylab reentered the atmosphere, landing in Australia. 2. Evolution/Creativity/Innovation. , trans-lunar versus Earth-orbit rendezvous and docking. As history bears out, this heated debate ended with general acceptance of the trans-lunar injection.

The second stage SIVB had a new single liquid hydrogen/lox engine replacing the cluster of RL-10’s in order to get more performance and higher reliability. The Saturn IB was used as the technology and operations demonstrator for the Saturn V Apollo. In fact, they both used the same SIVB stage and essentially the same guidance and control system. The Saturn IB became the launch vehicle for the manned launches to the Skylab space station. There were two versions of the Saturn V: (1) the vehicle that launched all Apollo Moon missions and (2) the version that launched the Skylab space station.

The attempt to measure these small gust effects met with frustration. The smooth skin balloons were unstable (type of flutter or vortex shedding). In a controlled, no disturbance environment, a rising sphere would oscillate (fig. 14). A classical problem most would say. Dr. Jim Scoggins found the solution by observing the golf ball, then instead of small dimples, he added many conical spikes to the sphere’s skin. The problem was solved. The sphere was stable (fig. 15). The resulting data base used throughout NASA is evidence.

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