A Sublimation Descent Probe for Porous Ice on Enceladus: Vapour Pressure, Mass Removal and Descent Budget

This paper presents a complete sizing study of the system in its title, built from named physical relations applied to a stated set of environmental inputs, with all results labelled SIMULATED, NOT MEASURED. The probe is a civilian science instrument for descending through the porous plume-fallout deposits of Enceladus to reach compact ice and the fractures beneath, in support of peaceful sampling and measurement. Headline computed outcomes are saturation vapour pressure of 46 pascals, descent rate of 2.4 metres per day and vapour production of 6.24 kilograms per hour. Because every figure traces to the deposited script, a reader who disputes an input can re-run the whole argument with a different one and see exactly which conclusions move.