Figure of Merit Characteristics Compared to Engineering Parameters

REPORT DOCUMENTATION PAGEForm ApprovedOMB No. 0704-0188The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintainingthe data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducingthis burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operation and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302.Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently validOMB control number.PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS.1. REPORT DATE (DD-MM-YYYY) 2. REPORT TYPE 3. DATES COVERED (From - To)01–09–2010Technical Memorandum4. TITLE AND SUBTITLE 5a. CONTRACT NUMBERFigure of Merit Characteristics Comparedto Engineering Parameters5b. GRANT NUMBER5c. PROGRAM ELEMENT NUMBER6. AUTHOR(S) 5d. PROJECT NUMBERC.M. Schrader,* and D.L. Rickman5e. TASK NUMBER5f. WORK UNIT NUMBER7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATIONREPORT NUMBERGeorge C. Marshall Space Flight CenterMarshall Space Flight Center, AL 358129. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING/MONITOR’S ACRONYM(S)National Aeronautics and Space AdministrationWashington, DC 20546–000112. DISTRIBUTION/AVAILABILITY STATEMENTUnclassified-UnlimitedSubject Category 91Availability: NASA CASI (443–757–5802)13. SUPPLEMENTARY NOTESPrepared by the Earth Sciences Office*BAE Systems, Huntsville, AlabamaM–1292NASA11. SPONSORING/MONITORING REPORT NUMBERNASA/TM—2010–21644314. ABSTRACTA workshop held in 2005 defined a large number of parameters of interest for users of lunar simulants. The needfor formal requirements and standards in the manufacture and use of simulants necessitates certain features ofmeasurements. They must be definable, measureable, useful, and primary rather than derived. There are alsocertain features that must be avoided. Analysis of the total parameter list led to the realization that almost all ofthe parameters could be tightly constrained, though not predicted, if only four properties were measured: Particlecomposition, particle size distribution, particle shape distribution, and bulk density. These four are collectivelyreferred to as figures of merit (FoMs). An evaluation of how each of the parameters identified in 2005 is controlledby the four FoMs is given.15. SUBJECT TERMS16. SECURITY CLASSIFICATION OF:a. REPORT b. ABSTRACT c. THIS PAGE16lunar simulant, figure of merit, engineering, particle composition, particle shape, particle size, bulkdensityU U U17. LIMITATION OF ABSTRACT 18. NUMBER OFPAGESUU 2419a. NAME OF RESPONSIBLE PERSONSTI Help Desk at email: help@sti.nasa.gov19b. TELEPHONE NUMBER (Include area code)STI Help Desk at: 443–757–5802Standard Form 298 (Rev. 8-98)Prescribed by ANSI Std. Z39-18