Brayton isotope power system. Phase I (Ground demonstration system) configuration control document (CCD) (open access)

Brayton isotope power system. Phase I (Ground demonstration system) configuration control document (CCD)

The Brayton Isotope Power System (BIPS) Ground Demonstration System (GDS) configuration is defined. The GDS is configured to be similar to a conceptual flight system design referred to herein as the BIPS Flight System (FS). The Brayton Isotope Power System is being developed by the ERDA as a 500 to 2000 W/sub e/, 7 year life 3.5 W/sub e/ per pound space power system. The system was a closed Brayton dynamic system to convert energy from an isotope heat source at a net efficiency exceeding 25%. This CCD is for the first phase of the ERDA program to have a qualified system ready for launch by June 30, 1981. Phase I is a 36 month effort to provide a conceptual design of the flight system and design, fabricate and test a ground demonstration system. The baseline system is predicated on using two of the multihundred-watt isotope heat sources being developed for the ERDA by GE. The Ground Demonstration System will simulate, as closely as possible, the Brayton Isotope Power Flight System and will utilize components and technology being developed by NASA for the Mini-Brayton rotating unit (AIRPHX), recuperator (AIRLA) and heat source assembly (GE). The Ground Demonstration System includes a …
Date: September 25, 1975
Creator: unknown
System: The UNT Digital Library
The Food Stamp Program: A compilation of statistical data on the characteristics of the recipient population, the eligible population, and "error rates" in program administration. (open access)

The Food Stamp Program: A compilation of statistical data on the characteristics of the recipient population, the eligible population, and "error rates" in program administration.

This report describes the Food Stamp Program which is a compilation of statistical data on the characteristics of the recipient population, the eligible population, and "error rates" in program administration.
Date: September 25, 1975
Creator: Richardson, Joe
System: The UNT Digital Library
Diamond-turning HP-21 beryllium to achieve an optical surface (open access)

Diamond-turning HP-21 beryllium to achieve an optical surface

Investigation of diamond turning on beryllium was made in anticipation of obtaining an optical finish. Although results of past experiences were poor, it was decided to continue diamond turning on beryllium beyond initial failures. By changing speed and using coolant, partial success was achieved. Tool wear was the major problem. Tests were made to establish and plot wear as a function of cutting speed and time. Slower speeds did cause lower wear rates, but at no time did wear reach an acceptable level. The machine, tools, and procedure used were chosen based on the results of preliminary attempts and on previous experience. It was unnecessary to use an air-bearing spindle because tool failure governed the best finish that could be expected. All tools of diamond composition, whether single crystal or polycrystalline, wore at unacceptable rates. Based on present technology, it must be concluded that beryllium cannot be feasibly diamond turned to achieve an optical finish. (22 fig.) (auth)
Date: September 25, 1975
Creator: Allen, D.K.; Hauschildt, H.W. & Bryan, J.B.
System: The UNT Digital Library
MPS Data Acquisition System (open access)

MPS Data Acquisition System

A description is given of the data acquisition system used with the multiparticle spectrometer facility at Brookhaven. Detailed information is provided on that part of the system which connects the detectors to the data handler; namely, the detector electronics, device controller, and device port optical isolator. (GHT)
Date: September 25, 1975
Creator: Eiseman, S. E. & Miller, W. J.
System: The UNT Digital Library