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Media:US2465525A.pdf U.S. Patent 2,465,525 issued to Robert Hutchings Goddard on Mar 29 1949 March 29, 1949 . Filed Dec 15 1943
Category:Publications
... to accommodate the considerable quantities of hydrogen fuel needed for the ascent. The loading intensity which this fuselage has to withstand is relatively low due to the modest in-flight inertial accelerations coupled with the very low density of liquid hydrogen. Also the requirement to ...
... ;less waste to clean up from the meal. Astronauts enjoy a wide variety of pre-prepared meals, and in the beginning it's likely we'll just be making more of them for shipment to the Moon. Once we get established on the ...
... to the fiftieth harmonic degree, for the static field, and up to the eighteenth for the first time derivative ref 11 . In 2014 the DTU publishes the CHAOS-5 model for the Earth’s magnetic field. The great importance of the ...
... charge of rocket research at Peenemünde .
Sänger’s antipodal bomber was to have been pushed horizontally along an almost 2 mile track (sort of like Fireball XL5 or the rocket on When World’s Collide , for ...
... exploration of our solar system. During a two decade period, from the 1950s to the 1970s, the US government's Rover and NERVA program developed the system and ultimately succeded in demonstrating the propulsion capabilities required for deep ... have to be resurrected to perform the deep space missions now being planned. This is the only comprehensive source for detailed data required to implement the thermal nuclear propulsion system that has been developed and proven to the point ...
... orbital elements. The optimal control solution of the fast-evolution problem combined with a direct method for the secular trajectory avoids the numerical instability arising in very long propagations, decreases the computational time, reduces the sensitivity to the initial guess and provides a feasible transfer at every optimization step. Optimization of transfers from GTO to ...
... to materialize (reasons for which will be outlined), there are nonetheless revolutionary developments which have attempted to address at least some of these earlier unperceived deficiencies. The current state of the art comprises a number of separate strands of ... a minimum, need to be extensive imposed by the requirement for complex reconfigurability and repair. The second question concerns the tools that we have at our disposal to implement the required intelligent functions of the starship. These are based ...
... to the Moon and other planets is still many years in the future, we'll think about missions above the Earth. We'd need to bring all the chemicals or plants or animals that are the subjects of ...
... Krikalev. The more people who fly in space and the longer they stay there, the more we learn about what spaceflight does to the human body and how we can survive in space for extended periods ... we'll have to make big improvements in order to sustain people in space for a lifetime. Finally, there is the problem of radiation. Radiation can cause damage to DNA, which can lead to cancer. On Earth ...
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