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    NASA: Memorandum "Ground Rules For Lunar Mission Radiation" Directly From The Armstrong Family Collection™, CAG Certified. A 10.5" x 8" three-hole punched page with one of the thirteen printed points carried over on the verso, not dated. An interesting memo on a very important, but rarely discussed, early concern regarding the Apollo lunar missions. "Apollo missions placed men for the first time outside the Earth's geomagnetic shield, subjecting them to potentially hazardous particulate radiation of an intensity and frequency not encountered in the Earth's environment... During a complete Apollo mission, astronauts were exposed to widely varying radiation sources. These included the Van Allen belts, cosmic rays, neutrons, and other subatomic particles created in high energy collisions of primary particles with spacecraft materials. Spacecraft transfer from low Earth orbit to translunar coast necessitated traverse of the regions of geomagnetically trapped electrons and protons known as the Van Allen belts. When beyond these belts, the spacecraft and crewmen were continuously subjected to high-energy cosmic rays and to varying probabilities of particle bursts from the sun. In addition, the individual responsibilities of the crewmen differed, and with these, their radiation exposure. Free-space extravehicular activity, lunar surface activity, and intravehicular Command and Lunar Module activity imposed varying radiation doses." (NASA.org) A full transcript of this memo can be found on our website. Fine. Sealed in a numbered archival sleeve, CAG 1002051-001. This lot will include a Statement of Provenance signed by Neil Armstrong's sons, Rick and Mark.

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    More Information: GROUND RULES FOR LUNAR MISSION RADIATION

    1. A countdown radiation analysis prediction of dose to the crew over
    the nominal lunar mission shall be made at T- hrs in the countdown
    This prediction will be based on data from current measurements and
    expected solar activity over the time span of the mission.

    2. A POD for each crew member will be the basis for any decision
    regarding the predicted doses. POD -LM Crew - Depth dose for 10% nausea.
    -CSM Pilot -Depth dose for 10% nausea

    3. Predicted solar activity should influence this decision only when:
    1. Current measurements leave a narrow margin between projected
    dose and POD.
    2. A solar flare is occurring.

    4. The POD should be applicable only during the countdown phase. The
    MOD will be applicable thereafter.

    5. One limit can be specified for the CM pilot over the entire mission,
    (½ the dose needed to produce 10 percent nausea).

    6. The limit for the IM crew may vary for different phases.

    7. Assume that a solar flare proton event can occur without consideration
    to probabilities

    8. Assume that exceeding the specified dose limit will result in the
    expected biological effect.

    9. The crews evaluation of their own physical condition as well as
    accumulated dose will be considered in the planning for the remaining
    mission objectives.

    10. A radiation environment evaluation will be required prior to final
    preparation for the IM confidence inspection.

    This evaluation will be based on the total radiation accumulated
    thus far in the mission plus the current measured dose rate extrapolated
    to cover the time span required for the IM confidence inspection.

    11. A radiation environment evaluation will be required prior to final
    preparation for the LM separation and desent phase.

    This evaluation will be based on the total radiation accumulated
    thus far in the mission plus the current measured dose rate extrapolated
    to cover the time span of IM ingress through lunar stay to docking and
    IM egress.

    This evaluation will be updated prior to EVA after lunar landing.

    12. Dose projections will be made for each crew member

    13. In each evaluation the radiation through the remainder of the
    mission will be considered within the total dose limit constraints.


    Auction Info

    Auction Dates
    November, 2019
    14th-16th Thursday-Saturday
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