He likes to push "What IFs" as if they are factual.
Very misleading.
He is fairly effective at getting the public interested in science tho.
I find Neil deGrasse Tyson is the better grandstander because he doesn't push the "What IFs" as strongly. He uses actual science to interest the public.
His style is similar to Dr Carl Sagan.
Science is amazing on its own if you know what to look at.
It doesn't need a lot of "What IFs" to make it so.
www.sciencealert.com is a website.
New Scientist is a website.
It is there to generate income from people clicking or buying its advertisements.
MIT, NASA, the ESA and other sites like that are based on real scientists doing real science.
Always consider the source.
I won't even get into those 'custom' youtube videos.
From Google Scholar results:
Mars entry fault-tolerant control via neural network and structure adaptive model inversion
https://www.sciencedirect.com/science/article/pii/S0273117718307129]
Planetary Protection and the astrobiological exploration of Mars: Proactive steps in moving forward
http://www.sciencedirect.com/science/article/pii/S0273117719300195
Earth-Mars cyclers for a sustainable human exploration of Mars
http://www.sciencedirect.com/science/article/pii/S009457651731826X
Highlights
• Earth-Mars transfer scenario reducing launch cost by 50% wrt to NASA DRA 5.0.
• Reutilization of transfer habitats for 14 return travels to Mars.
• Distributed deployment of Mars exploration systems for a sustainable development.
• Nuclear free solution.
• Transfer time compatible with other reference scenario.
Abstract
Since the early history of Space Exploration, Mars conquest has been the most important target. After Apollo mission's Moon landing, several concepts and projects, concerning a mission on the Red Planet, were developed. One of the most important contributes was given by Buzz Aldrin, who theorized the use of particular kind of orbits, called cycler orbits, as baseline for an enduring Mars colonization.
A cycler orbit is a kind of orbit which repeats every integer multiple of synodic period and which encounters two bodies with a precise schedule. In the case, the bodies considered are Earth and Mars. It is possible to inject a space station in the cycler orbit which allows a continuous transfer of a crew from Low Earth Orbit to Mars Low Orbit and vice-versa. Small taxi vehicles are used to rendezvous the cycler station from the two bodies, significantly reducing the amount of propellant.
In this paper a mission architecture based on this new concept was analysed, in order to develop an alternative mission profile compared to the actual architectures proposed for human missions. The work starts with an analysis of several classes of cycler. Through a trade-off analysis an unique class of cycler was identified as baseline for a further mission analysis. The mission analysis consists of an evaluation of orbital perturbation, the computation of ΔV required for injection and rendezvous manoeuvres and an identification of close approach windows of the cycler with the two planets, allowing an evaluation of mission duration.
Eventually, the presented mission concept was compared with more classical concepts, focusing on a key figure to enable Mars colonization, sustainability.
Finally the proposed architecture should be seen as a preliminary assessment of an alternative solution to the currently proposed enabling architectures for the Martian exploration.
• Earth-Mars transfer scenario reducing launch cost by 50% wrt to NASA DRA 5.0.
• Reutilization of transfer habitats for 14 return travels to Mars.
• Distributed deployment of Mars exploration systems for a sustainable development.
• Nuclear free solution.
• Transfer time compatible with other reference scenario.
Abstract
Since the early history of Space Exploration, Mars conquest has been the most important target. After Apollo mission's Moon landing, several concepts and projects, concerning a mission on the Red Planet, were developed. One of the most important contributes was given by Buzz Aldrin, who theorized the use of particular kind of orbits, called cycler orbits, as baseline for an enduring Mars colonization.
A cycler orbit is a kind of orbit which repeats every integer multiple of synodic period and which encounters two bodies with a precise schedule. In the case, the bodies considered are Earth and Mars. It is possible to inject a space station in the cycler orbit which allows a continuous transfer of a crew from Low Earth Orbit to Mars Low Orbit and vice-versa. Small taxi vehicles are used to rendezvous the cycler station from the two bodies, significantly reducing the amount of propellant.
In this paper a mission architecture based on this new concept was analysed, in order to develop an alternative mission profile compared to the actual architectures proposed for human missions. The work starts with an analysis of several classes of cycler. Through a trade-off analysis an unique class of cycler was identified as baseline for a further mission analysis. The mission analysis consists of an evaluation of orbital perturbation, the computation of ΔV required for injection and rendezvous manoeuvres and an identification of close approach windows of the cycler with the two planets, allowing an evaluation of mission duration.
Eventually, the presented mission concept was compared with more classical concepts, focusing on a key figure to enable Mars colonization, sustainability.
Finally the proposed architecture should be seen as a preliminary assessment of an alternative solution to the currently proposed enabling architectures for the Martian exploration.
References
[1]
T.T. McConaghy, J.M. Longusky, D.V. Byrnes
Analysis of a Broad Class of Earth-Mars Cycler Trajectories
AIAA (2002), p. 4420
Google Scholar
[2]
Ryan P. Russell, Cesar A. Ocampo
Systematic method for constructing earth-mars cyclers using free-return trajectories
J. Guid. Contr. Dynam., 27 (3) (2004), pp. 321-335
CrossRef View Record in Scopus Google Scholar
[3]
D.V. Byrnes, J.M. Longuski, B. Aldrin
Cycler orbit between Earth and Mars
J. Guid. Contr. Dynam., 30 (3) (May-June 1993)
Google Scholar
[4]
R.H. Battin
An Introduction to the Mathematics and Methods of Astrodynamics
AIAA education series, New York (1987)
Google Scholar
[5]
H. Schaub, J.L. Junkins
Analytical Mechanics of Aerospace Systems
AIAA education series, Reston, VA (2003)
Google Scholar
[6]
R.R. Bate, D.D. Mueller, J.E. White
Foundamental of Astrodynamics
Dover publications (1971)
Google Scholar
[7]
Drake, B.G., ed., “Human Exploration of Mars: Design Reference Architecture 5.0 Addendum”, NASA/SP–2009–566-ADD.
Google Scholar
[8]
G. Rauwolf, A. Friedlander, K. Nock
A Mars cycler architecture utilizing low-thrust propulsion
AAS/AIAA Astrodynamics Specialist Conference and Exhibit, No. AIAA 2002-5046 in 2002, AAS/AIAA (2002)
Google Scholar
[9]
A.L. Friedlander, J.C. Nieho, D.V. Byrnes, J.M. Longuski
Circulating Transportation Orbits between Earth and Mars
Tech. Repp. 86–2009
AIAA (August 1986)
Google Scholar
[10]
K.J. Chen, B.A. Rogers, M. Okutsu, D.F. Landau, J.F. Longuski
Low-thrust Aldrin cycler with reduced encounter velocities
J. Spacecraft Rockets, 49 (5) (2012)
955{961
Google Scholar
[11]
D.F. Landuau, J.M. Longuski
Guidance strategy for hyperbolic rendezvous
AIAA/AAS Astrodynamics Specialist Conference and Exhibit, No. AIAA 2006-6299 (August 2006)
Google Scholar
[12]
Global Aerospace Corporation
Phase I Final Report
Cyclical Visits to Mars via Astronaut Hotels, vol. 30 (November 2000)
[13]
Global Aerospace Corporation
Phase II Final Report
Cyclical Visits to Mars via Astronaut Hotels, vol. 9 (April 2003)
[14]
R.D. Braun, R.W. Powell
Earth aerobraking strategies for manned return from Mars
J. Spacecraft Rockets, 29 (3) (May-June 1992), pp. 297-304
CrossRef View Record in Scopus Google Scholar
[15]
T. Chican, et al.
Mars Base Camp Updates and New Concepts
(September 2017)
IAC-17,A5,2,7,x40817
Google Scholar
Note that none of the references listed are New Scientist, Discovery.com or any other mainstream website about space.
Edited by
Tom4Uhere
on Mon 02/11/19 06:59 PM