Title

Micrometeorite Measurements from the Midas II Satellite (1960)

Date

1961

Index Abstract

Coming Soon

Photo Quality

Not Needed

Report Number

AFCRL 1053

Creator

Soberman, R. K.

Lucca, L. Della

Corporate Author

Air Force Cambridge Research Laboratories

Laboratory

Photochemistry Laboratory

Extent

15

Identifier

AD0268556

Distribution Classification

1

DoD Project

7667

DoD Task

76046

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Date Modified

Scanned by request 9/22/2008 submitted by United States Air Force (Government Agency - Domestic)

Abstract

Five micrometeorite sensing devices were carried on board the Midas II (1960 ?1) satellite which was launced into an approximately 500-km circular equatorial orbit on 24 May 1960. The five devices consisted of three acoustic detectors and two wire-grid detectors. Data were obtained for four partial orbits. These data were recorded in real time. There were no breaks in the wire grids which could record impacts of particles larger than 10 microns. Sixty-seven impacts were recorded on the acoustic detectors which had a momentum threshold of 3x10^-4 gm cm sec^-1 and a total area of 0.0686 square meters. Thes results indicate a flux pf 0.25 m^-2sec^-1 of particles 5 microns in diameter or larger if one assumes a mean velocity of 15 km sec^-1 and a density of 3 gm cm^-3 for the particles. The discrepancy between acoustic and wire-grid data will be discussed. These results will be compared with those obtained from other stellite measurements.

Report Availability

Full text available

Date Issued

1961-11

Provenance

IIT

Type

report

Format

1 online resource