Design Blueprint: A Pre-Cooling System for a Venus Sample-Return Ascent Stage: Refrigeration Load and Time Sizing

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24199758): This study sizes a Pre-Cooling System for a Venus Sample-Return Ascent Stage for operation in the Venus surface environment and reports the result as SIMULATED, NOT MEASURED. The design is developed from stated physical relations and a shared environmental basis, and every performance figure is computed by the deposited script rather than asserted. Among the computed results are pre-cooling target temperature of 290.0 kelvin, sensible cooling load of 60.4 kilowatt-hours, heat leak during cooling of 420.0 watts, cooling duration of 60.0 hours. Mass and power budgets are assembled from components so that they can be audited, off-design behaviour and materials uncertainty are discussed openly, and the limits of the sizing are stated in full. The system is a civilian science and construction design intended for a robotically serviced surface station. The principal computed results are venus pressure bar of 92.0; venus temperature k of 735.0; venus density kg m3 of 65.0; venus gravity m s2 of 8.87. Further results include venus solar day h of 2808.0; venus night h of 1404.0; stage dry mass kg of 145.0; propellant mass kg of 210.0. The design is a computed study for peaceful surface operations on Venus — power supply, thermal control, construction and resource handling for a surface station — and it has no targeting or weapon application. Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.