Lucy E Cohan

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Integrated modeling for determining launch survival and limitations of actuated lightweight mirrors. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits(More)
Reliability of crop production data has implications for yield gap analysis, production time trends, trading and policy decisions. In this paper, we compared databases of major grain crops estimated by a pair of independent organisations in Nebraska, USA (USDA-NASS, National Agricultural Statistics Service of USDA vs NRD, Natural Resources Districts of(More)
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract. Lightweight, active, silicon carbide mirrors have the potential to(More)
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract. Lightweight, active, silicon carbide mirrors can increase the(More)
The next generation of space telescopes will need to meet increasingly challenging science goals. For these new systems to meet resolution goals, the collecting area of the primary mirror will need to be increased. However, current space telescope designs are reaching their limits in terms of size and mass. Therefore, new systems will need to include(More)
Table 2. Evaluation of lunar lander concepts for carrying out a crew and cargo mission to a lunar polar outpost (4 crew and 6 mt of cargo); ranking order (worst to best: red, yellow, light green, Acknowledgements The Apollo Gray Team would like to thank Payload Systems Incorporated (PSI) in Cambridge for their generous support in printing a 3-D model of our(More)
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