CONCLUDING REMARKS
A theoretical proof of the concept complemented with the pragmatic
methodological approach has been established herein for converting space
debris lucratively into fuels and also for building soil from silicon
powder for fostering the pharmaceutical flora in the space lab of
ISS for the drug discoveries. During the recycling process at the
artificial gravity condition, the evolved gases could be stored in the
canisters for devising thrusters for various aerospace propulsion
applications. Note that, using these thrusters, the ISS could be shifted
to the subsequent orbit after mitigating all space debris from the
nearest surroundings. Briefly, the recycling energy conversion system
proposed herein could be utilized for the possible orbital trajectory
changes of space labs. Through our analytical estimation we concluded
that 1 kg of aluminum debris could produce ~ 0.96-0.98
kg of aluminum powder for producing valuable fuel for chemical
propulsion. Additionally, we could conclude that the silicon powder
created could be used for producing feigned soil for fosteringpharmaceutical flora in the ISS to discover scarce-drugs for
high-endurance health care management. It leads to say that one can aim
for cultivating medicinal plants in the space lab for discovering
suitable drugs for enhancing the heat capacity ratio of blood for
reducing the risk of asymptomatic stroke and acute heart
failure in the gravity and microgravity conditions presumably due to
the variations in blood viscosity and turbulence level in the
circulatory systems of human being and animals. These are succinctly
reported in toto by V.R.Sanal Kumar et al. [3, 26-28]. It is
known that cardiovascular risk is higher in astronauts / cosmonaut but
the fundamental cause of such risk is still unknown to medical science
[3, 43, 44]. Michael D. Del et al. [43] highlighted that Apollo
lunar astronauts exhibit higher cardiovascular disease mortality. It is
important to note that the world-wide space agencies and nations are
contemplating for the extended manned missions to Mars and theMoon . In such manned missions, health risks could be escalated as
travel goes beyond the Earth’s protective magnetosphere into the more
intense deep space radiation environment. Therefore, suitable drug
discovery is inevitable for increasing the thermal tolerance level [3,
28] for reducing the cardiovascular risk of the inhabitants (human
being / animal) of the space vehicle or space lab.
Clare Wilson
[44] reported (2019) that being in microgravity can have strange
effects on the body, including people’s blood flow backwards.
K. Marshall-Goebe [45] reported that exposure to a weightless
environment during space flight results in a chronic headward blood and
tissue fluid shift compared with the upright posture on Earth, with
unknown consequences to cerebral venous out flow. All these findings
lead to say that high endurance health care management is required for
reducing the risk of cardiovascular disease mortality of astronauts /
cosmonaut for conducting experiments in the space labs. Further
discussion on the medical application of our study is beyond the scope
of this short communication.
Briefly, our theoretical concept study will create a win-win situation
through real time experiments in the orbiting space lab by recycling the
space debris lucratively, for creating end products for the benefits to
humanity. We concluded that the proof of the theoretical concept
presented herein could be implemented in real-time in any space lab for
the debris mitigation and recycling in accordance with the procedural
requirements set for meeting the safety and mission assurance
[46-50]. Note that additional materials (fuel/oxidizer) and/or
additives must be available on board for making solid propellants for
getting desirable specific impulse, as the case may be. Additionally,
sufficient water must be produced using on-board fuel-cell for
vegetation. These are identified as minor limitations in making the
desirable end product without any prerequisite. Nevertheless, barring
all limitations, we concluded that the space debris-recycling and the
energy conversion system described methodologically herein are viable
options for producing the end products in the ISS for various biological
and aerospace applications in the future for the benefits to humanity.