Approximating Shielding Effects on Galactic Cosmic Radiation Effective Dose Rate Calculations During Extreme Altitude and Sub-Orbital Flights Using CARI-7/7A

Details

• Creators:
  Copeland, Kyle
• Corporate Creators:
  United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
• Corporate Contributors:
  United States. Office of Aerospace Medicine
• Subject/TRT Terms:
  Altitude Attitude (Flight Dynamics) Cosmic Rays CARI-7 Crewmember Dosimetry Extreme-altitude Flight Galactic Cosmic Radiation In-flight Radiation Exposure Radiation Hazards Sub-orbital Flight
• Publication/ Report Number:
  DOT/FAA/AM-17/8
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Office of Aerospace Medicine
• Abstract:
  The dominant source of ionizing radiation in the aerospace environment is galactic cosmic radiation (GCR). Traditionally, calculations of exposure rates for vehicle occupants in aircraft have not included vehicle structure; while in spacecraft, vehicle structure is considered without atmosphere. This report describes modifications applicable to CARI-7 and CARI-7A to allow inclusion of the effects of vehicle structure on calculations of effective dose rate from GCR throughout a suborbital mission in a lightly shielded vehicle (<20 g/cm2). Required coefficients and an example of the technique are provided for aluminum shielding. While results are considerably different than if shielding were entirely neglected, they vary by less than 8% from the simple approximation of 1:1 substitution of additional atmospheric depth for aluminum.
• Format:
  PDF
• Collection(s):
  FAA Civil Aerospace Medical Institute US Transportation Collection
• Main Document Checksum:
  urn:sha-512:837fcb3cc16f439c2a0179065a6bf7b1f92b429dd69dee1810e3ec2f11a06e9664ec76124802d029820491e0d9e2d793ea9e62089af7706ea447965b8b4d45fe
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/37291/dot_37291_DS1.pdf
• File Type:
  [PDF - 4.25 MB ]