Monthly Newsletter

August 2001

may be able to modify existing SMHF28XXX/HR parts by opening them, removing the TC4426 and replacing it with a new part. Then the hybrids would be resealed with an epoxy lid and undergo abbreviated requalification. This process would result in a four-week delivery time for usable, rad safe converters. SORCE could also procure new, fully qualified, hermetic parts from Interpoint, but this process will require 8 weeks minimum to deliver parts. The soft start circuit modification would still be employed with either of the two options. Final resolution of the situation is progressing.

SORCE Science
Gary Rottman, SORCE PI traveled to Hanoi, Vietnam and attended the IAGA Session on Solar Variability August 2001. Dr. Rottman gave a talk titled, "Measurement of Solar Irradiance During the Past Two Solar Cycles". The International Association of Geomagnetism and Aeronomy (IAGA) is one of the 7 Associations in the International Union of Geodesy and Geophysics (IUGG).

SORCE scientists and engineers plan to present papers and attend the following upcoming 2001 meetings:

  • "Gyroless" Discussion at GSFC September 20, 2001
    GSFC Program Management Council Consideration of the "Gyro" Issue September 24, 2001
  • Calcon 2001 September 2001 Logan, Utah
  • MIWG KSC October, 2001
  • NewRAD October 2001 Gaithersburg, Maryland

Please contact for information submission.

SIM Instrument Photo Update

Page 2