Incredibly rare 1963 Lockheed/NASA engineering test data examining fluid stratification in the Saturn V's Liquid Hydrogen (LH2) tank.  Stratified fluids are common in situations of differential heating, and if poorly managed, can lead to cavitation and engine failures.  This research was undertaken early in the development of the Saturn V to examine whether stratification would be an issue (it turns out it wasn't!).

Also included is a PDF of the final 1964 Lockheed report, showing how the manuscript data in the graphs and notes contained in the binder were incorporated into a final evaluation document.

Comes from the estate of NASA/Rocketdyne propulsion engineer Tom Winstead (Apollo tank/MPS)—the engineer who conducted these tests and co-authored the final report.

A very rare manuscript research document from the development of the Saturn V, straight from the estate of the propulsion engineer who conducted the research!

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