Brown, David R.

Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2602. Metals and ferrites with rectangular hysteresis loops are used in magnetic amplifiers, switching networks, and data-storage systems. In these applications, the large-signal pulse response is most important. To reduce the effect of eddy currents, metals have been rolled to ultra-thin gage and high-resistivity ferrites have been used. By these techniques, eddy currents have been reduced to the point where relaxation effects limit the response time...

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MIT DIC 6889. Project Whirlwind Engineering Note E-464. A quantitative index of hysteresis-loop squareness i s defined. It can be determined directly from the hysteresis loop or by pulse test.

Scope and Contents MIT DIC 6889. Project Whirlwind Memo M-2873. MIT proposes approval of release of IBM engineering specifications No. 3043000, engineering change No. 11183, for the ferrite memory core to facilitate procurement negotiations with General Ceramics Corp. and the development and construction of test equipment. New specifications embodying a simplified test procedure, but not changing the memory-core characteristics, are expected on approximately September 1, 1954. Test-equipment planning should be...

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MIT DIC 6345. Project Whirlwind Memo M-499. Memorandum on a discussion by project Whirlwind I research teams on 7AK7 production at the Sylvania Radio-Tube Plant at Emporium, Pa., June 1t, 1948.

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Division 6 Memo M-3738. A one-year extension of Subcontract No. 49 with the Philco Corporation was recommmended to (1) continue research aimed at establishing the reliability of the surface-barrier transistor and improving its performance in digital-computer circuits, (2) establish specifications for a computer surface-barrier transistor, (3) develop transistors for driving magnetic-core memories, and (4) develop digital-computer basic circuits.

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Project Whirlwind Controlled Distribution Memo 6D-105. Memory units and matrix switches using new square-loop ferrite material increase speed and reliability of digital computers. Storage units with arbitrary-access and read-out time of five microseconds or less makes stored-information rapidly available without scanning time required by other systems. Reprinted from Electronics.

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Division 6 Memo M-3652. Minutes of a Group 63 approval committee meeting discussing emitter-input gates, symbols, and the next meeting. Present: D. R. Brown, W. A. Clark, E. U. Cohler, N. L. Daggett, J. W. Forgie, T. H. Meisling, K. H. Olsen.

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Division 6 Limited Memo 6L-194. Minutes of weekly group leader meeting discussing Radar Coordinat:on Committee, Joint Services Advisory Committee, April 7 meeting on SAGE programming, space, April 6 Coordination Committee meeting, Colonel LaMontagna's Friday visits, ferrite memory cores, radar calibration, and personnel handbook. Present: J. W. Forrester, D. R. Brown, S. H. Dodd, R. R. Everett, C. W. Farr, A. P. Kromer, J. C. Proctor, N. H. Taylor, and C. R. Wieser.

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Project Whirlwind Limited Memo L-91. Minutes of weekly group leader meeting discussing draft situation, status of WWII decisions, staff salary reviews, and visit on May 4 by Watson. Present: Jay W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, J. C. Proctor, N. H. Taylor, C. R. Wieser, P. Youtz.

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Project Whirlwind Limited Memo L-37. Minutes of weekly group leader meeting discussing "time schedule for Whirlwind II computer.". Attending were: J. W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, N. H. Taylor, C. R. Wieser. P. Youtz.

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Division 6 Limited Memo 6L-195. Minutes of weekly group leader meeting discussing Joint Services Advisory Committee, April 12 ADES meeting, personnel handbook, space, responsibilities for the SAGE system, Philco, General Ceramics, MTC, release of information to Rand, and Section C of 6520th AC&W Squadron. Present: R. R. Everett, D. R. Brown, S. H. Dodd, C. W. Farr, A. P. Kromer, J. C. Proctor, N. H. Taylor, and C. R. Wieser.

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Project Whirlwind Limited Memo L-92. Minutes of weekly group leader meeting discussing revision of biweekly report, report on draft status of staff members, and staff salary review. Present: Jay W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, J. C. Proctor, R. R. Rathbone, N. H. Taylor, C. R. Wieser, P. Youtz.

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Project Whirlwind Limited Memo L-38. Minutes of weekly group leader meeting discussing Whittemore space, block diagram meetings, Barta space, Lincoln finance, magnetic drums, and recruiting. Attending: J. W. Forrester, B. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, N. H. Taylor, C. R. Wieser, P. Youtz, J. C. Proctor.

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Division 6 Limited Memo 6L-196. Minutes of weekly group leader meeting discussing space, salary review, IBM engineering support program, second source for AN/FSQ-7 tubes. Present: J. W. Forrester, D. R. Brown, S. H. Dodd, R. R. Everett, C. W. Farr, A. P. Kromer, J. C. Proctor, N. H. Taylor, C. R. Wieser, and P. Youtz.

Scope and Contents Project Whirlwind Limited Memo L-147. Minutes of weekly group leader meeting discussing Sprague's report on air defense, meeting at Colorado Springs during week of April 12, building F, April 15 meeting on army 414 program, planning for the duplex central, IBM time schedules, staff salary review, advanced development program, meeting in Colorado Springs on budget, charactron and typotron development, General Ceramics, move to Lexington, visit by Boeing on April 16, and ADES contract....

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Project Whirlwind Limited Memo L-39. Minutes of weekly group leader meeting discussing test equipment, administrative forms and memoranda, and indoctrination program. Attending: J. W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, N. H. Taylor, P. Youtz.

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Project Whirlwind Limited Memo L-148. Minutes of weekly group leader meeting discussing progress report by military liaison office, extraordinary expense budget, IBM participation in installation of FSQ-7 (XD-1), and staff salary review. Present: J. W. Forrester, D. R. Brown, S. H. Dodd, R. R. Everett, W. K. Linvill, J. C. Proctor, N. H. Taylor, and C. R. Wieser.

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Project Whirlwind Limited Memo L-93. Minutes of weekly group leader meeting discussing change in time for next meeting, staff salary review, visitors and building alterations, professional societies, patents, procurement of magnetic materials, and motion pictures. Present: Jay W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, J. C. Proctor, C. R. Wieser, and P. Youtz.

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Project Whirlwind Limited Memo L-40. Minutes of weekly group leader meeting discussing new staff and Project Lincoln progress report. Attending: D. R. Brown, C. W. Adams, S. H. Dodd, C. R. Weiser, N. H. Taylor, P. Youtz, H. Fahnestock and J. Ulman.

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Project Whirlwind Limited Memo L-161. Minutes of weekly group leader meeting discussing ferrite memory cores, engineering for production AN/FSQ-7's, maintenance and spare parts for production AN/FSQ-7'S, Army 414 system, revision of TM-20, Joint Project Office, and IBM. Present: J. W. Forrester, D. R. Brown, S. H. Dodd, R. R. Everett, A. P. Kromer, and C. R. Wieser.

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Project Whirlwind Limited Memo L-112. Minutes of weekly group leader meeting discussing charactron for FSQ-7 display and magnetic-core memory for WWI. Present: C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, N. H. Taylor, C. R. Wieser, and P. Youtz.

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Project Whirlwind Limited Memo L-55. Minutes of weekly group leader meeting discussing shops, visit by Paul Cusick, Remmington Rand, visitors, Dr. Lou Gold, Control Instrument Company, ferrlte research, Philco contract, and Scientific and Engineering Applications Group. Attending: Jay W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, N. H. Taylor.

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Project Whirlwind Limited Memo L-114. Minutes of weekly group leader meeting discussing personnel estimate for fiscal 1954, research assistants, and magnetic-core memory for WWI. Present: J. W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, R. A. Nelson, N. H. Taylor, C. R. Wieser, and P. Youtz.

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Project Whirlwind Limited Memo L-56. Minutes of weekly group leader meeting discussing assigned technicians, Philco contract, Dr. Lou Gold, test equipment, machine shop, plug-in units, crystal rectifiers, and Scientific and Engineering Applications Group. Attending: J. W. Forrester, C. W. Adams, D. R. Brown, S. H. Dodd, R. R. Everett, H. Fahnestock, N. H. Taylor.

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Project Whirlwind Limited Memo L-162. Minutes of weekly group leader meeting discussing space, IBM, concurrence, ADES, liaison, new schedule for TM-20 revision, and typotron. Present: J. W. Forrester, D. R. Brown, S. H. Dodd, R. R. Everett, A. P. Kramer, J. C. Proctor, N. H. Taylor, and C. R. Wieser.

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Project Whirlwind Limited Memo L-116. Minutes of weekly group leader meeting discussing air conditioning for WWI, microfilm copies of WWI drawings, purchasing at IBM, personnel estimate for fiscal 1954, FSQ-7 installation in Lexington, space in Lexington, and travel authorization. Present: R. R. Everett, D. R. Brown. S. H. Dodd, R. A. Nelson, J. C. Proctor, N. H. Taylor, P. Youtz.

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Project Whirlwind Limited Memo L-58. Minutes of weekly group leader meeting discussing intercom system for WWI, WWl installation, October meeting of Direction Systems Research Committee, October Meeting of the IRK Computers Committee, indoctrination program, and visit to Remmington Hand. Attending: Jay W. Forrester, D. R. Brown, S. H. Dodd, R. R. Everett, C. R. Wieser, and P. Youtz.

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Project Whirlwind Limited Memo L-164. Minutes of weekly group leader meeting discussing funds for maintenance of AN/FSQ-7(XD-1) and (XD-2), funds for direction centers, IRE West Coast Convention, Building 10 research program, courses for special students, security, selective service, and Division 6 components stockroom. Present: R. R. Everett, D. R. Brown, S. H. Dodd, A. P. Kromer, W. K. Linvill, J. C. Proctor, and C. R. Wleser.

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Project Whirlwind Limited Memo L-118. Minutes of weekly group leader meeting discussing reorganization of Group 65, FSQ-7 display, space for Group 62, personnel, tube shop, and Cape Cod display system. Present: D. R. Brown, S. H. Dodd, J. C. Proctor, N. H. Taylor, C. R. Wieser, P. Youtz.

Scope and Contents Division 6 Limited Memo 6L-175. Minutes of weekly group leader meeting discussing meetings, maintenance contract for FSQ-7, Division 6 space, research assistants, magnetic-materials research, release of memory-core process, time schedules, Hughes' visit, digital data receivers and transmitters, ADES assistance, Christmas holiday, status of building design, acceptance tests for AN/FSQ-7 (XD-1), and projection system. Present: J. W. Forrester, D. R. Brown, S. H. Dodd, R. R. Everett, A. P....