NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Description of the COMRADE experimentThe COMRADE experiment is designed to return minimally degraded particles to earth along with complete in situ information concerning mass, velocity, and trajectory of encountered particles. The objectives of the program are very diverse. A set of flight-tested active detectors will be combined in an array to identify some of the physical properties of an incident grain, e.g., velocity vector, momentum, and mass. The use of passive detectors gives access to the chemical and isotopical properties of the grains in the micrometer size range. We are concerned simultaneously with a destructive capture, using metallic collectors, and a nondestructive capture, using a new low-density target in which the impacting grains stop, practically intact. The primary objectives for this mission are (1) to identify the particle remnants of the micrometer-sized grains having impacted on purposely designed metallic collectors, for complete and detailed chemical, isotopic, and organic analysis, thereby determining grain composition as well as the existence of organic and inorganic molecules, to be related with the possible cometary origin of the grains showing an extraterrestrial signature; (2) to return captured intact particles to earth for complete and detailed chemical, isotopic, spectral, mineralogical, and organic analysis, thereby determining grain composition as well as the existence of organic and inorganic molecules; and (3) to capture micrometer/submicrometer dust grains in a manner that ensures minimal particle degradation and guarantees state-of-the-art confidence in measurement of the in situ particle parameters including trajectory, velocity vector, mass, and flux distributions.
Document ID
19950004534
Document Type
Conference Paper
Authors
Borg, Janet (Institut d'Astrophysique Paris, France)
Maag, Carl R. (Institut d'Astrophysique Paris, France)
Bibring, J.-P. (Institut d'Astrophysique Paris, France)
Tanner, William G. (Institut d'Astrophysique Paris, France)
Alexander, M. (Institut d'Astrophysique Paris, France)
Date Acquired
September 6, 2013
Publication Date
January 1, 1994
Publication Information
Publication: Lunar and Planetary Inst., Workshop on the Analysis of Interplanetary Dust Particles
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle19950004178Analytic PrimaryOzone in the Troposphere and Stratosphere, part 119950004531Analytic PrimaryWorkshop on the Analysis of Interplanetary Dust Particles