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... some problems which are inherent to missions of this type and which may require control and propulsion technologies beyond the present technical feasibility. In particular, the inad- equacy of gravitational lens missions ...

Media:19790072549_1979072549.pdf Margin Allocation on Extended LM Lunar Missions (400KB PDF) Category:Publications

... after a few weeks in space. If these figures are simply extrapolated, a future human mission to Mars will be seriously jeopardised and crews may find they cross the threshold ... and aerobic fitness - ultimately with them being unable to return to Earth. When arriving on Mars, considerable biomechanical alterations will also occur. Optimum walking speeds will be approximately 30% lower and ...

... . While clearly any discussion of such systems would be speculative, it is possible to consider some key high level trade offs for artificial planets. It is concluded that an object with ... this an outline of the main characteristics of such a planet is presented, together with some thoughts about its construction, development and viability. It is concluded that if artificial planets were ...

'''Author - M.C Bernasconi et al '''Co-Author(s)''' - M. C. Bernasconi; R. Zenger; M. Versteeg '''JBIS Volume ''' - Contents of the Journal of the British Interplanetary Society for Volume 61 61 '''Page ''' - 186-194 '''Year''' - 2008 '''Keywords''' - Space habitats, space health, IHAB '''JBIS Reference Code ''' - 2008.61.186 '''Number of Pages''' - 9 Abstract The approaches ...

... mission to Mars, considerably better quantitative data on radiation dose rates beyond the magnetosphere are still required. In particular, better predictability of the occurrence and magnitude of energetic particles from the Sun ... artificial gravity can be provided in some way on transfer vehicles. Medical systems designed for these disparate gravitational fields may require unique hardware and ...

... Orbit and for gravitational effects of the Moon and the Sun for GEO orbits. The satellite may need to be sent to a new orbit in order to accomplish its mission. As we ... the best pay-load not only depends on the characteristics of the payload itself, but also on the payload’s effect on the spacecraft bus. In some cases, a smaller payload may need more ... of minutes, or even hours for planetary missions. Tele-robotics technology is therefore an indispensable ingredient in space exploration, and the introduction of some autonomy is a reasonable consequence of such protracted ...

... considerable distances involved. It is theoretically possible for a craft to use the Sun as a gravitational lens to increase receiver gain along the line joining the craft and the center of the Sun ... maintain a tight lock on the signal, including the use of a constellation of assisting satellites, and multiple antennas on the receiving craft. We suggest interstellar precursor missions that would ...

... able to land ourselves on the Moon some 35 years ago, just less than 9 years after President Kennedy's famous political rally on May 25thof 1961 till the successful mission of Apollo-11 ... any and all launches. Yes, we may be able to tolerate some level of acceptable risk and taking on a considerable dose of inherent technology risks in any space exploration and developmental activities ...

... Earth into the solar system because a single-planet species will not survive." ("Ground This Mission", The Washington Post; October 2, 2005; page B6.) And Nature (see above) notes that this ... , the physical circumstances on the Moon are markedly different from those faced in the West Indies, but in principle the difficulties that they present should be offset to some considerable extent today by ...

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