Full metadata record
DC FieldValueLanguage
dc.contributorDepartment of Industrial and Systems Engineeringen_US
dc.creatorWeiss, Peter Simon-
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleSystem study and design of a multi-probe mission for planetary in-situ analysisen_US
dcterms.abstractPlanetology has gained an overall picture of most surfaces of solar system bodies through observation satellites and robotic landers. However a novel method for the exploration of extraterrestrial surfaces is needed to complete remote observations with a global network of in-situ measurements. Miniaturized surface penetrators are a promising concept to fill the gap between remote observations and in-situ measurements. This work investigates the feasibility of the deployment of a large number of geochemical measurement instruments, integrated into high-velocity penetrators. The objective was to develop a mission strategy and architecture for a multi-microprobe planetary exploration system. To determine the quantity of probes needed, a landing site decision support system was developed in ArcGIS. The system uses a method to calculate the uncertainty in geochemical datasets in order to identify locations with high measurement uncertainty. This methodology was applied on data of the lunar surface: The identification of ISRU elements in the lunar soil is one of the highest objectives in the future attempts to return to the Moon. Thirty-one locations on the Moon are identified that can be used to perform ground control checks of the abundance of these elements. The ultimate goal of such a mission would be to develop a model of the surface abundances of elements that span the overall lunar surface. Based on this quantity as base specification, a miniaturized high-velocity penetrator concept is developed. Different carrier structures were analyzed through empirical formula and hydrocode simulations in LS-DYNA. The goal of this investigation was to evaluate the ruggedness of the carrier shell, evaluate the penetration depth and its impact behavior. A soil model of the lunar soil had to be developed to perform the numerical analysis. The result of this work was a modified penetrator design which is better suited to geochemical surface analysis. Several works identify the sampling mechanism for soil analysis as weak element in the development of high-velocity penetrators. Different sampling strategies are reviewed and novel methods suggested. Based on a technological analysis a sampling system that works like a vibrating conveyor was designed further. The efficiency of the system is evaluated analytically. The work concludes with a design of a high-velocity penetrator for geochemical analysis that can be deployed in large numbers on the surface of extraterrestrial surfaces.en_US
dcterms.extentxix, 178 leaves : ill. ; 31 cm.en_US
dcterms.educationalLevelAll Doctorateen_US
dcterms.LCSHHong Kong Polytechnic University -- Dissertationsen_US
dcterms.LCSHPlanets -- Explorationen_US
dcterms.LCSHSpace probes -- Design and constructionen_US
dcterms.accessRightsopen accessen_US

Files in This Item:
File Description SizeFormat 
b23744807.pdfFor All Users13.5 MBAdobe PDFView/Open

Copyright Undertaking

As a bona fide Library user, I declare that:

  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.

By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

Show simple item record

Please use this identifier to cite or link to this item: https://theses.lib.polyu.edu.hk/handle/200/5746