Project Whirlwind: Recent submissions

Now showing items 801-820 of 1737

    • Section Leader Meeting Group 62, June 14, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-06-17)
      Plans to establish engineering control of inspection and test of prototype system have been initiated. MRI design by IBM is delayed pending a Lincoln decision regarding method of relaying information from P site to Direction ...

    • Summary of IBM - MIT Collaboration on Design of AN/FSQ-7 (XD-1) Combat Information Central, May 1 thru May 31, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-06-24)
      Joint engineering activity has resulted in engineering concurrence and Lincoln approval of additional portions of the system. Completion of the review of the display system has resulted in agreement on certain changes to ...

    • Trip Report to Bell Telephone Laboratories, Murray Hill, N.J., January 6, 1954 

      Goodenough, John B. (Lincoln Laboratory - Division 6, 1954-01-14)
      The ferrite single-crystal-synthesis program of the Bell Telephone Laboratories was investigated. Information on some experimental techniques for measurement about to be undertaken in this laboratory was also obtained. ...

    • Minutes of Group 61 - Group 64 Meeting, 8 September 1954 

      Benington, H. D. (Lincoln Laboratory - Division 6, 1954-09-21)
      At a meeting held between representatives of Groups 61 and 64, use of WWI's magnetic tape and camera facilities by programmers and computer operators was discussed. Group 61 agreed to correct several deficiencies in its ...

    • Group 62 Section Leaders Meeting, June 21, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-06-22)
      A conference reached agreement on the display specifications. They are presently being written up for formal concurrence action. SDV demodulator circuits are being reviewed. Initial memory planes for XD-1 System, made at ...

    • Effects of Tape Thickness and Temperature on Flux Reversal of 4-79 Molybdenum-Permalloy 

      Menyuk, Norman (Lincoln Laboratory - Division 6, 1954-05-03)
      Measurements of the flux reversal time t have been made for 1/8-mil, 1/4-mil, 1/2-mil, and 1-mil 4-79 Molybdenum-Permalloy tape cores as a function of the applied field. These measurements were taken at seven different ...

    • Group 62 Section Leaders Meeting 24 May, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-05-27)
      Meetings with Air Force ADC have led to a plan for implementing the Air Division Combat Operations Center with a simplex FSQ-7 and a supplementary large board (projected) display. A procedure to formalize the processing ...

    • Group 62 Section Leaders Meeting--August 23, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-08-26)
      Concurrence with IBM is scheduled for display system and MRI specifications. MTC has been reassembled and will be fully operational by September 1. Components of the 13 most frequently used circuits are to be released for ...

    • Group 62 Section Leaders Meeting -- April 26, 1954 

      Gray, Philip J. (Lincoln Laboratory - Division 6, 2009-06-12)
      Memorandum on the Group 62 Section Leaders Meeting of April 26, 1954.

    • Sensing Winding Geometry and Information Patterns 

      Raffel, J. I. (Lincoln Laboratory - Division 6, 1954-07-22)
      Two properties of the sensing winding used in the Whirlwind I and MTC core memories are common to a large class of winding configurations. These are: 1) maximum partial cancellation of core "noise" 2) no inductive coupling ...

    • Core Memory Using External Bit Selection 

      Raffel, J. (Lincoln Laboratory - Division 6, 1954-03-18)
      A memory system in which the memory functions (remanence) and the selection function (nonlinearity) are performed in separate cores may have the following advantages over the present (coincident-current) system: 1) Much ...

    • High Speed Core Driver 

      Bradspies, S. (Lincoln Laboratory - Division 6, 1954-10-21)
      A high-speed core driver has been developed. The circuit consists of two pulse amplifiers, a slave flip-flop, a buffer amplifier (which has very rapid rise and fall times), and a current amplifier (Fig. 1). The rise and ...

    • Summary of MIT-IBM Collaboration on Design of AN/FSQ-7 (XD-1) Combat Information Central, January 1 thru January 31, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-02-09)
      Engineering development work has continued on all aspects of the system with emphasis on display and drum circuit switching. IBM requests Lincoln to undertake output digital data transmission equipment development. Design ...

    • Laboratory Personnel 

      Lincoln Laboratory Administrative Staff (Lincoln Laboratory - Division 6, 1954-10-01)
      Memorandum listing Laboratory Personnel of Division 6 - Lincoln Laboratory.

    • X-Ray Equipment for Magnetic Research 

      Tuomi, D.; Vinal, F. E. (Lincoln Laboratory - Division 6, 1954-07-29)
      After an examination of the manner in which x-ray techniques may be applied to a magnetic materials research program, the applications most meaningful to our particular interests have been selected. It is apparent that our ...

    • Group 62 Section Leaders Meeting, October 25, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-10-27)
      Reorganization is placing magnetic work in Group 63. Questions regarding XD-1 operation are leading to consideration of change of delivery date. MRI specifications to be completed in approximately 2 weeks. Procedure for ...

    • A Theory of Perovskite-Type Manganites (La,M(II))MnO₃ 

      Goodenough, John B. (Lincoln Laboratory - Division 6, 1954-11-30)
      Semicovalence and its effects on indirect magnetic-exchange interaction are reviewed and applied to the manganites. These considerations lead to qualitative predictions which are in complete accord with the following ...

    • Changes in Prototype or Production Machines 

      Dodd, S. H.; Everett, R. R.; Taylor, N. H. (Lincoln Laboratory - Division 6, 1954-07-28)
      The XD-1 and XD-2 Systems have reached a point where changes cannot be made unless mandatory to insure operation. The production design is approaching a similar stage and any suggestions for changes should be made soon.

    • Summary of MIT-IBM Collaboration on Design of AN/FSQ-7 (XD-1) Combat Information Central, April 1 thru April 30, 1954 

      Kromer, A. P. (Lincoln Laboratory - Division 6, 1954-05-08)
      Cape Cod System demonstrations were given to four groups of IBM (Project High) personnel. Diode switching of read-write circuits in drum system has been selected for the prototypes and initial duplex centrals. The central ...

    • Bondeze Magnetic Wire for Memory-Plane Construction 

      Bowen, Andrew; Guditz, E. A. (Lincoln Laboratory - Division 6, 1954-08-27)
      The possible eventual breakdown of the Quadruple Formex insulation in memory planes due to the abrasive action of vibrating memory cores could be prevented by wiring the planes with Bondeze #3 Magnetic wire. The resulting ...