Analysis of penumbral eclipse data

Two days of data from the ATS-6 1976 eclipse season were analyzed to determine the effects of varying photoelectron flux on spacecraft potential. Particular emphasis was placed on the variation in potential as the satellite entered the earth's penumbra. Measurements from the AE-C satellite of the solar UV radiation were used to construct a model of atmospheric attenuation. This model was found to be consistent with direct measurements of the variations in photoelectron flux as Injun 5 passed into eclipse. Applying the model to the ATS-6 data gave the time dependency of the solar illumination/photoelectron flux as the satellite was eclipsed. This relationship, when combined with the ATS-6 measurements of satellite potential, revealed a nearly linear relation between the solar illumination/photoelectron flux and the logarithm of the satellite potential

Just Because You\u27re Offended Doesn\u27t Mean You\u27re In The Right: A Perspective on Language, Comedy, and Ethics

Some humor is offensive, but does this convey a moral constraint on what comedians can include in their jokes? Using stand up bits and reflections on comedy from George Carlin, Louis C.K., and Doug Stanhope, various philosophies of humor, and the linguistic philosophy of H.P. Grice, I explore the given question and attempt to settle the disputes about when it is prudent to be offended, in what ways comedians should be allowed to offend, and whether or not words can hurt just as much as sticks and stones

Auroral-polar cap environment and its impact on spacecraft plasma interactions

The high density of the plasma at shuttle altitude is likely to increase greatly the possibility of arcing and shorting of exposed high voltage surfaces. For military missions over the polar caps and through the auoroal zones, the added hazards of high energy auroral particle fluxes or solar flares will further increase the hazard to shuttle, its crew, and its mission. A review of the role that the auroral and polar cap environment play in causing these interactions was conducted. A simple, though comprehensive attempt at modelling the shuttle environment at 400 km will be described that can be used to evaluate the importance of the interactions. The results of this evaluation are then used to define areas where adequate environmental measurements will be necessary if a true spacecraft interactions technology is to be developed for the shuttle

Man to Man: We Can Stop Sexual Violence

I was lucky enough to grow up with a loving mother who taught me early on to respect every woman and, more so, to never overstep the boundaries between people unless I am invited to do so with full cognizance of the actions of both parties. To be less philosophical, she was always very clear with me that touching no-no parts with any person (in my case, a lady) without express consent is wrong every time and that I would never forgive myself if I forgot that maxim in a flight of “passion.” At no time in my life have I ever thought that it was okay to “go the distance” with a woman who had not opened herself up to me in that way. This all makes sense, right? Everybody with me? See, I never thought I had to clarify that understanding; that is, until I got to college. [excerpt

An overview of charging environments

A brief synopsis of the natural environments that play a role in spacecraft charging is presented. Environments that cause both surface and internal charging are discussed along with the mechanisms involved. The geosynchronous and low altitude regions of the Earth's magnetosphere/ionosphere are considered and simple descriptions of each environment presented. As material properties are critical to the charging process, definition of material properties important to charging, which can be affected by the environment, are also described. Several space experiments are proposed that would help fill the gaps in the knowledge of the performance of materials in a charging environment

Zonal Winds Between 25 and 120 Km Retrieved from Solar Occultation Spectra

Atmospheric winds at heights between 25 and 120 km have been retrieved with precisions of 5/ms from the Doppler shifts of atmospheric absorption lines measured from a satellite-borne instrument. Lines of the upsilon 3 CO2 and upsilon 2 H2O rotation-vibration bands caused by gases in the instrument allowed the instrumental frequency scale to be absolutely calibrated so that accurate relative speeds could be obtained. By comparing the positions of both sets of instrumental lines the calibration of the frequency scale was determined to be stable to a precision of less than 2 x 10(-5) cm during the course of each occultation. It was found that the instrumental resolution of 0.015 cm after apodization, the signal to noise ratio of about 100 and stable calibration allowed relative speeds to be determined to a precision of 5 ms or better by using small numbers of absorption lines between 1600 and 3200 cm. Absolute absorption line positions were simultaneously recovered to precisions of 5 x 10(-5) cm or better. The wind speed profiles determined from four sunset occultations and one sunrise occultation show remarkable similarities in the magnitudes and directions of the zonal wind velocities as functions of height. These wind profiles appear to be manifestations of atmospheric tides