Investigation of tape flexures for space borne deployable structures

Space exploration arises the demand for launching large size structures to satisfy the need of high bandwidth telecommunication, earth observation and deep space interplanetary missions. Launching of these monolithic structures of sizes 3 m or more are not feasible due to limited launch fairing space of state-of-the-art launch vehicles. Therefore, the development of innovative deployment mechanisms is need of the hour. Deployment process of space borne deployable systems is the process of transition from mechanism to structure which is one of the unreliable stage due to existence of many conventional rotary joints which causes loss of energy due to backlash, friction and misalignment. An investigation study is presented in this paper for churning out a solution of flexible hinges using tape springs in state-of-the-art space deployable configurations which eliminates the factors causing loss of energy. Analytical and experimental methods are evaluated for investigating the bending behaviour of tape flexures. Tape flexures demonstrate to be a suitable candidate for compliant deployable configuration. The proposed configuration with combination of two tape flexures mounted in such a way that concave curve of each tape faces each other are structurally analysed for desired rotation angle. A comparison study is carried out for various material options of single and double layered tape flexures proposed for a flexure hinge. Practical feasibility of the proposed configuration is also demonstrated successfully on space borne deployable structures.

Design suggestions on modified self-sustainable space toilet

The present research investigates the design of compact and lightweight waste collection system (WCS) for interplanetary missions such as Mars, and the Moon as well as the space with the required features of NASA’s lunar loo challenge (released date: 25th June, 2020). Existing space toilets’ WCS store waste in small plastic bags and these bags are thrown in the space which increases the space junk. If these WCS are used on planets, they could pollute the planets. The newly designed—unisex and self-sustainable space toilet meets its objective of intimacy and warmth for the astronauts as it is equipped with all essential features such as (a) the basin for vomit collection, (b) the rotating waste storage based on the mechanism of artificial gravity, and (c) the noiseless bellow pump for air flow flushing system (AFFS). The WCS is designed for the storage of urine, faeces, vomit, diarrhoea, and menses. In the first half of the research article, the focus is kept on improving self-sustainability of the present WCS. In the second half of the present investigation analyses are done for multiphase flows of the CFD analysis in ANSYS fluent to simulate the flow of air through the nozzle provided with (a) the seat, (b) the urine funnel, and (c) the basin for air flow flushing system (AFFS). The design of the present self-sustainable space toilet proposed herewith is justified suitable for different gravitational conditions such as (a) Mars (3.721 m/s2), (b) the Moon (1.62 m/s2), and (c) the zero—or microgravity i.e., the space gravity. The proposed solar-operated WCS could be integrated to function with (a) water recovery and management (WRM) system, (b) the inbuilt composting unit, and (c) the bioregenerative life support system (BLSS). Furthermore, the assessment of the required electrical energy derived from the solar energy (harnessed using efficient solar photovoltaic (PV) modules) is conceptualized for the effective functioning of the present self-sustainable WCS. Article highlights The present investigation explores into the design of lightweight and compact WCS for interplanetary missions such as Mars and the Moon, as well as space missions with the functionality listed by NASA's lunar toilet competition (released date: 25th June, 2020). The actual space toilets, which are used on the International Space Station (ISS), are not designed to withstand varying gravity circumstances. The new advanced—unisex and self-sustaining space toilet achieves its goal of intimacy and warmth for astronauts by including all necessary features such as (a) a vomit collection basin, (b) rotating waste storage based on artificial gravity mechanism, and (c) a noiseless bellow pump for air flow flushing system (AFFS).

S.E.ARCH: Science Fiction and Extraterrestrial Architecture

<p>Until this point in time, space architecture has relied heavily on engineering - resulting in little room for artistic practice. The resulting habitats are ill-equipped to sustain the quality of life required for long-term or interplanetary missions. However, rapid technological growth is beginning to enable the realisation of outer space for commercial enterprise, scientific gain, and personal exploration. Together, a budding space industry and the profession of space architecture are set to lead each other, hand-in-hand, into a new age of space exploration - and to destinations never before reached. For almost as long as human culture has remembered we have been fascinated by the stars. A potent result of this fascination is science fiction and stories concerning space travel. A strong and tangible assemblage has formed between science fiction, social narrative, and outer space. Science fiction can make concepts of the future understandable. It can make communities focused on the future. This thesis proposes that the discipline of architecture, with the help of popular science fiction, can re-imagine space architecture. It seeks to create empathy with the future inhabitants of outer space by envisaging the space industry of the future, and through the creation of a passenger ship it develops a hope for a future that unfolds differently to what we are planning for now. This research seeks to investigate these connections in order to create safer and more fulfilling homes for spacefarers of the future. It does so by arguing against the typology we maintain. Through iterative designs which coincide with research on the use of science fiction and habitability in space, it concludes with a new ship typology.</p>

S.E.ARCH: Science Fiction and Extraterrestrial Architecture

<p>Until this point in time, space architecture has relied heavily on engineering - resulting in little room for artistic practice. The resulting habitats are ill-equipped to sustain the quality of life required for long-term or interplanetary missions. However, rapid technological growth is beginning to enable the realisation of outer space for commercial enterprise, scientific gain, and personal exploration. Together, a budding space industry and the profession of space architecture are set to lead each other, hand-in-hand, into a new age of space exploration - and to destinations never before reached. For almost as long as human culture has remembered we have been fascinated by the stars. A potent result of this fascination is science fiction and stories concerning space travel. A strong and tangible assemblage has formed between science fiction, social narrative, and outer space. Science fiction can make concepts of the future understandable. It can make communities focused on the future. This thesis proposes that the discipline of architecture, with the help of popular science fiction, can re-imagine space architecture. It seeks to create empathy with the future inhabitants of outer space by envisaging the space industry of the future, and through the creation of a passenger ship it develops a hope for a future that unfolds differently to what we are planning for now. This research seeks to investigate these connections in order to create safer and more fulfilling homes for spacefarers of the future. It does so by arguing against the typology we maintain. Through iterative designs which coincide with research on the use of science fiction and habitability in space, it concludes with a new ship typology.</p>

External Communication of Autonomous Crews Under Simulation of Interplanetary Missions

Two experiments, with 17-day and 120-day isolation, were carried out within the frame of the Scientific International Research in Unique Terrestrial Station (SIRIUS) international project at the Institute of Biomedical Problems (Moscow, Russia). Manifestations of the “detachment” phenomenon in the crew – mission control center (MCC) communication previously identified in the Mars-500 project were confirmed in this study. As in the Mars-500 experiment, in the SIRIUS-19, the landing simulation in the halfway of isolation caused a temporary increase of crew communication with MCC. We also revealed several differences in the communication styles of male and female crew members. By the end of the experiment, there was a convergence of communication styles of all the SIRIUS crew members and also an increase in crew cohesion.

Use of a evolutionary algorithm to optimize interplanetary transfers

In this paper, it was studied the optimization of the cost of interplanetary missions with emphasis on reducing fuel consumption. To achieve this goal, a genetic algorithm was implemented to optimize the total impulse of orbital transfer. It was implemented a case of sending a space vehicle from Earth to a another planet using a gravity assist maneuver (swing by), in this paper it was chose sending a spacecraft from Earth to Mars with a close approach to the Venus. The method employed can be used for impulsive interplanetary missions in general, and so the solution found can become an initial solution for numerical methods of optimization of low thrust maneuvers