T II E U N I V E R S I T Y O F M I C HI G A N COLLEGE OF ENGINEERING Department of Electrical Engineering Space Physics Research Laboratory Quarterly Status Report Not KQ-20 for the period December 1, 1964 to March 31# 1965 MEASUREMENT OF THE MOON'S ATMOSPHERIC PRESSURE Prepared by: Uriel Vogel Under contract with: NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CONTRACT NO. NASw-133 GODDARD SPACE FLIGHT CENTER GREENBELT, MARYLAND Administered through: OFFICE OF RESEARCH ADMINISTRATION ANN ARBOR April 1965

INTRODUCTION This is the 20th status report describing the research effort under contract NASw-133 and it covers the period December 1, 1964 to March 31, 1965. This contract calls for the continued theoretical study of the lunar atmosphere and an investigation of the state-of-the-art composition measuring devices for the eventual use in the measurement of the composition of the moon's atmosphere. RESEARCH EFFORT DURING THE PERIOD The work on the anisotropy of the lunar atmosphere is essentially complete. A paper on the subject was read at the AGU meeting of December, 1964 in Seattle, Washington and is now being readied for publication. A proposal was submitted for the support of the construction of a prototype pressure gauge with a directed orifice. The use of such a gauge on the moon would enable us to obtain a mass-analysis of the lunar atmosphere due to the anisotropy or the dependence of the molecular fluxes on location (see proposal ORA-65-807-PB1). FUTURE WORK This depends on the acceptance of the above mentioned proposal

FUNDS REMAINING As of 31 March, 1965, $0 remains of the currently allotted funds, MONTHLY COST BREAKDOWN.....Wages..... EqulpMonth Stu ent N onstudent Overhead Materials ment Travel December $ 421 $ 1,739 $ 800 $ 21 0 $347 January 81 977 655 588 0 -6 February 1^091 502 5 0 0 March 17 8 64 0 241 TOTALS $ 502 $ 3,824 $1,965 $678 0 $582 GRAND TOTAL $7,551 -'2