High frequency, high power capacitor development

A program to develop a special high energy density, high power transfer capacitor to operate at frequency of 40 kHz, 600 V rms at 125 A rms plus 600 V dc bias for space operation. The program included material evaluation and selection, a capacitor design was prepared, a thermal analysis performed on the design. Fifty capacitors were manufactured for testing at 10 kHz and 40 kHz for 50 hours at Industrial Electric Heating Co. of Columbus, Ohio. The vacuum endurance test used on environmental chamber and temperature plate furnished by Maxwell. The capacitors were energized with a special power conditioning apparatus developed by Industrial Electric Heating Co. Temperature conditions of the capacitors were monitored by IEHCo test equipment. Successful completion of the vacuum endurance test series confirmed achievement of the main goal of producing a capacitor or reliable operation at high frequency in an environment normally not hospitable to electrical and electronic components. The capacitor developed compared to a typical commercial capacitor at the 40 kHz level represents a decrease in size and weight by a factor of seven

Proceedings of workshops to define engineering requirements for a space vacuum research facility

The construction of a molecular wake shield for the shuttle orbiter is presented as well as a collision model with a program depicting emitted molecular density around the spacecraft giving estimates of backscattered flux and other collisional processes

Maclisp extensions

A common subset of selected facilities available in Maclisp and its derivatives (PDP-10 and Multics Maclisp, Lisp Machine Lisp (Zetalisp), and NIL) is decribed. The object is to add in writing code which can run compatibly in more than one of these environments

Real-Time Operating System/360

RTOS has a cost savings advantage for real-time applications, such as those with random inputs requiring a flexible data routing facility, display systems simplified by a device independent interface language, and complex applications needing added storage protection and data queuing

The Marian Philatelist, Whole No. 30

https://ecommons.udayton.edu/imri_marian_philatelist/1029/thumbnail.jp

Madonna Study Group, Whole No. 2

https://ecommons.udayton.edu/imri_marian_philatelist/1001/thumbnail.jp

Madonna Study Group, Whole No. 1

https://ecommons.udayton.edu/imri_marian_philatelist/1000/thumbnail.jp

The Marian Philatelist, Whole No. 35

https://ecommons.udayton.edu/imri_marian_philatelist/1034/thumbnail.jp

The Marian Philatelist, Whole No. 38

https://ecommons.udayton.edu/imri_marian_philatelist/1037/thumbnail.jp