: Erik Seedhouse
: Martian Outpost The Challenges of Establishing a Human Settlement on Mars
: Praxis
: 9780387981918
: 1
: CHF 35.70
:
: Luft- und Raumfahrttechnik
: English
: 304
: Wasserzeichen/DRM
: PC/MAC/eReader/Tablet
: PDF

Mars Outpost provides a detailed insight into the various technologies, mission architectures, medical requirements, and training needed to send humans to Mars. It focuses on mission objectives and benefits, and the risks and complexities that are compounded when linked to an overall planet exploration program involving several expeditions and setting up a permanent presence on the surface.

The first section provides the background to sending a human mission to Mars. Analogies are made with early polar exploration and the expeditions of Shackleton, Amundsen, and Mawson. The interplanetary plans of the European Space Agency, NASA, and Russia are examined, including the possibility of one or more nations joining forces to send humans to Mars. Current mission architectures, such as NASA's Constellation, ESA's Aurora, and Ross Tierney's DIRECT, are described and evaluated.

The next section looks at how humans will get to the Red Planet, beginning with the preparation of the crew. The author examines the various analogues to understand the problems Mars-bound astronauts will face. Additional chapters describe the transportation hardware necessary to launch 4-6 astronauts on an interplanetary trajectory to Mars, including the cutting edge engineering and design of life support systems required to protect crews for more than a year from the lethal radiation encountered in deep space. NASA's current plan is to use standard chemical propulsion technology, but eventually Mars crews will take advantage of advanced propulsion concepts, such as the Variable Specific Impulse Magnetoplasma Rocket, ion drives and nuclear propulsion.

The interplanetary options for reaching Mars, as well as the major propulsive maneuvers required and the trajectories and energy requirements for manned and unmanned payloads, are reviewed . Another chapter addresses the daunting medical problems and available countermeasures for humans embarking on a mission to Mars: the insidious effects of radiation on the human body and the deleterious consequences of bone and muscle deconditioning. Crew selection will be considered, bearing in mind the strong possibility that they may not be able to return to Earth. Still another chapter describes the guidance, navigation, and control system architecture, as well as the lander design requirements and crew tasks and responsibilities required to touch down on the Red Planet.

Section 3 looks at the surface mission architectures. Seedhouse describes such problems as radiation, extreme temperatures, and construction challenges that will be encountered by colonists. He examines proposed concepts for transporting cargo and astronauts long distances across the Martian surface using magnetic levitation systems, permanent rail systems, and flying vehicles. In the penultimate chapter of the book, the author explains an adaptable and mobile exploration architecture that will enable long-term human exploration of Mars, perhaps making it the next space-based tourist location.

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Table of contents 5
Preface12
Acknowledgments14
About the author16
Figures17
Tables28
Abbreviations and acronyms30
1 Why go?37
BENEFITS OF TRAVELING TO MARS41
Science41
Human expansion43
International cooperation44
Technological advancement44
Human performance44
Inspiration45
THE ROLE OF NASA45
THE INEVITABILITY OF HUMANS ON MARS46
REFERENCES47
2 Interplanetary plans48
EUROPEAN SPACE AGENCY48
Aurora missions49
ExoMars52
Mars Sample Return Mission53
European politics53
RUSSIA AND CHINA54
UNITED STATES57
The new vision57
American politics58
GLOBAL EXPLORATION STRATEGY59
3 Mission architectures61
INTERPLANETARY TRAJECTORIES61
Basic orbital mechanics61
Trajectory variables62
Trajectory options62
Hohnann transfer trajectory62
Oppsition trajectory62
Conjunction trajectory64
Conjunction trajectory options64
Braking into orbit64
Aero assist trajectory64
In summary65
DAS MARSPROJEKT65
Mission architecture65
MARS DIRECT67
Mars Direct architecture67
Medical aspects69
Artificial gravity69
Why artificial gravity may not work69
Surface architecture69
Radiation and mission risk70
The pros and cons of Mars Direct70
REFERENCE MISSION OF THE MARSDRIVE CONSORTIUM71
Mission architecture71
Mission hardware73
Mission analysis73
PROJECT TROY75
Mission architecture76
Mission parameters78
Lift mass and launch requirements78
Cost and timescale79
Mission requirements80
Living space80
Life support80
Medical issues81
Surface architecture81
EUROPEAN SPACE AGENCY82
Mission architecture82
GLOBAL AEROSPACE CORPORATION84
Mars transit base84
Cycling orbits85
Transit stations87
Testing the plan88
Cycler anlyzed88
NASA DESIGN REFERENCE MISSION88
SPACEWORKS ENGINEERING INS. (SEI)90
Mission architecture92
Mission parameters94
Architecture flight hardware94
Crew launch vehicle94
Cargo launch vehicle94
Trans-Mars injections stage96
In-space propulsion stage97
In-space transfer habitats97
Mars Excursion Vehicle elements99
Entry, descent, landing and Mars ascent101
Architecture surface hardware101
Mars surface Habitat101
Pressurized rover102
Architecture masses103
Mars exploration campaign103
Mission risk103
DIRECT 2.0104
Jupiter launch system105
Jupiter-120 and Jupiter-232 overview105
The Jupiter launch vehicles105
Payload106
Intergration and utilization of Shuttle-derved technology107
Solid rocket boosters107
External tank107
Integration and utilization of existing technology107
Mission architecture107
IN SUMMARY110
REFERENCES111
4 Abort modes and the challenges of entry, descent and landing112
ABORT OPTIONS112
Free return trajectory113
CHALLENGES OF ENTRY, DESCENT AND LANDING114
Generic entry, descent and landing sequence116
Exoatmospheric flight116
Entry into Mars' atmosphere116
Entry maneyver116
Parachute descent116
Powered descent117
Touchedown117
Why landing on Mars won't be easy117
Atmospheric anomalies117
Surface hazards118
Non-redundant systems118
Landing accunracy118
RESOLVING THE EDL PROBLEM120
Approach and entry to Mar' atmosphere120
Aerocapture120
Aerocapture challenges121
Evolved accelration guidance logic for entry (EAGLE)121
Aeroshells122
Inflatable aeroshells123
Hypercone124
Ballutes125
Stronger and larger parachutes126
Supersonic retropropulsive systems126