. Mars Exploration News .

To the Highlands of Mars
by Morris Jones
Sydney, Australia (SPX) May 20, 2012

Learn about the history Mars exploration in this new book from Morris Jones - perfect for school libraries. Order online today.

Landing on Mars is never easy, as a record of failed missions has demonstrated. The gravity is fairly strong, but the atmosphere is thin. This pulls spacecraft in rapidly as they approach, but offers little natural means of slowing them down. Then there's the touchdown on rocky terrain, which can cause further problems.

Thus, mission planners try to settle their spacecraft down in fairly safe locations. The terrain needs to be flat, and it also helps if the landing site is at a fairly low altitude. This means there's more wispy carbon dioxide air to use for deceleration by parachute.

Getting to the high terrain on Mars is more difficult. It's no wonder that such areas are generally avoided by landers.

We're in the middle of a massive reshuffle of Mars exploration on a global scale. Programs in the USA and Europe face budgetary cutbacks. Some of the grand mission plans that were on the agenda could be infeasible, at least in the near future. It's time to consider some new options that could allow for interesting results at modest costs.

Let's consider sending some small probes to the highlands of Mars. These probes would not have the capability of a large rover, or even a Mars Pathfinder-style spacecraft. They will be modest in their performance, but the scientific returns could be more than we expect.

Just landing anything in some of the more geologically interesting regions of Mars would be an immediate payoff. We can see a lot from orbit, especially when we have a high-resolution camera on NASA's Mars Reconnaissance Orbiter. But nothing beats "ground truth".

Touching down a small instrument package to photograph the soil and rocks at close range, and see things from angles beyond the reach of an orbiting camera, would be useful. It would help to place our large pool of orbital data in better context. It would confirm some of our assumptions, and possibly challenge others.

A small instrument package could also yield some basic spectroscopic data, along with air pressure measurements.

How would we get there? Let's not place too much faith in parachutes. Instead, we should consider stronger deceleration during atmospheric entry. Engineers are making steady progress in the field of expandable heatshields. These can nestle a small lander like a shuttlecock, providing a large area for atmospheric drag with a relatively small mass.

A small rocket thruster could be fired immediately before impact, very close to the ground.

Shock absorbers would provide the final protection during impact. They may use compressible structures or gels. Some may even bounce. Airbags would probably not be useful for a small lander at a high velocity.

The lander itself would still need to be very rugged. But this can be done. Electronics and batteries can be highly robust. Delicate instruments and micro-rovers are probably off the manifest.

The lander could have a performance life of only a few hours, uplinking its data to an orbiter. The data set would not be large and could be transmitted in only a few passes.

Small landers could be launched in tandem with orbiters, and would separate as the spacecraft approached Mars. This could be one way of launching a "pathfinder" mission to demonstrate the landing technology.

Later, more landers could be launched in a group on a dedicated mission.

Plans have been drawn for penetrator missions that incorporate some of these principles. The best- known plan at the moment is the Finnish-Russian-Spanish MetNet mission plan.

Small spacecraft can still deliver useful results. Let's remember this in tough economic times.

Dr Morris Jones is an Australian space analyst and writer. Email morrisjonesNOSPAMhotmail.com. Replace NOSPAM with @ to send email.

Related Links
Space Frontier Publishing
Mars News and Information at MarsDaily.com
Lunar Dreams and more

Get Our Free Newsletters Via Email
Buy Advertising Editorial Enquiries


. Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Russia could join U.S. in Mars mission
United Nations, N.Y. (UPI) May 9, 2012
Russia would be willing to be a partner with the United States on a manned mission to Mars, a Russian space official said at the United Nations. At U.N. headquarters to mark the International Day of Human Space Flight, Sergey Saveliev, deputy head of Russian space agency Roscosmos, said only international cooperation could make such a mission possible. "I have to say that current ... read more

NASA Offers Guidelines To Protect Historic Sites On The Moon

Neil Armstrong gives rare interview - to accountant

Perigee "Super Moon" On May 5-6

India's second moon mission Chandrayaan-2 to wait

When Will Shenzhou 9 Be Launched

China's space women wait for blast-off

Shenzhou 9 to be ready for mid-June launch?

China confirms plans to build own orbital station

SpaceX Launches Falcon 9 Dragon on Historic Mission

SpaceX Dragon Transports Student Experiments to Space Station

Space Station - Here We Come!

ISS Research and Development Conference June 26-28 Denver

Beyond Pluto And Exploring the Kuiper Belt

Uranus auroras glimpsed from Earth

Herschel images extrasolar analogue of the Kuiper Belt

Cassini Spots Tiny Moon, Begins to Tilt Orbit

Cassini, Saturn Moon Photographer

Cassini to Probe Enceladus Gravity, Take Pictures

NASA Research Estimates How Long Titan's Chemical Factory Has Been in Business

Nea Kameni volcano movement captured by Envisat

Unparalleled Views of Earth's Coast With HREP-HICO

Moscow court upholds ban against satellite image distributor

New Carbon-Counting Instrument Leaves the Nest

NASA hails 'new era' in exploration

Boeing Completes Software PDR Of New Crew Ship

CU astronaut-alumnus Scott Carpenter looks back at 50th anniversary of Aurora 7 mission

Glitch mars opening of world's tallest tower

Newfound exoplanet may turn to dust

Cosmic dust rings no guarantee of planets

In search of new 'Earths' beyond our Solar System

Free-floating planets in the Milky Way outnumber stars by factors of thousands

Memory Foam Mattress Review

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


The content herein, unless otherwise known to be public domain, are Copyright 1995-2012 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement