MODEL STUDIES OF EFFECTS ON LUNAR SOIL OF CHEMICAL EXPLOSIONS

Detonating explosives in dense soil not only creates a crater but can loosen soil as well. This technical paper describes a study in which 51 model tests of cratering and soil loosening were conducted using blasts of pentaerythritol tetranitrate detonated at different depths of burial and different gravitational accelerations in a lunar soil simulant. By modeling conditions on the Moon's surface, investigators hoped to determine: 1) the relationship between crater dimensions and depth of burial of an explosive in lunar regolith, 2) the loosening effect on the soil due to the explosion, and 3) the result of that loosening on excavatability. Apparent crater volumes reached their maximum at an optimum depth of burial of eight charge diameters. Cone penetration resistance was measured and established that all charges resulted in substantial soil loosening. The measurements of excavatability of the soil revealed that the findings can be extrapolated as a first estimate of excavation effort required on the lunar surface.

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 1684-703
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00667493
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 18 1994 12:00AM