William J. Debnam - Hampton VA Archibald L. Fripp - Williamsburg VA Roger K. Crouch - Newport News VA
Assignee:
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC
International Classification:
G01K 100
US Classification:
374208
Abstract:
A reusable metal clamp 10 for retaining a fused quartz ampoule 25 during temperature cycling in the range of 20. degree. C. to 1000. degree. C. A compressible graphite foil 27 having a high radial coefficient of thermal expansion is interposed between the fused quartz ampoule 25 and metal clamp 10 to maintain a snug fit between these components at all temperature levels in the cycle.
Magnetometer With A Miniature Transducer And Automatic Scanning
James C. Administrator of the National Aeronautics and Space Fletcher William J. Debnam - Hampton VA Carl L. Fales - Newport News VA Roger A. Breckenridge - Newport News VA Arthur V. Pohm - Ames IA
International Classification:
G01R 3304
US Classification:
324249
Abstract:
The magnetometer transducer includes a group of plated magnetic wires arranged in parallel physically and connected in series electrically to serve as a drive circuit, and several turns of 0. 025 mm diameter wire wound around the group of plated magnetic wires to serve as a sense coil. Each of the magnetic wires has a diameter of 0. 05 mm with their centers being 0. 25 mm apart. Because of its shape and small size, it is capable of very good spatial resolution of magnetic fields as low as 0. 02 oe and it can make measurements of transverse magnetic fields as close as 0. 08 mm from a surface. The magnetometer utilizes two X-Y recorders in a unique transducer scanning technique. One of the recorders moves the transducer over the specimen being measured and the other recorder records the measurements.
