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27 wrz 2023 · The NASA Instrument Cost Model (NICM) is a suite of tools used to estimate the development cost of future NASA spaceflight instruments. This includes both remote sensing and in-situ types of instruments.
1 cze 2017 · I'm trying to figure out what is a fair and reasonable price for first stage rocket engines such as the BE-3, BE-4, Merlin 1D, RD-180, Aestus, F-1, LE-7A, NK-33A, RD-107A. RD-171M, RD-191,...
NICM is the NASA Instrument Cost Model: Instrument Cost and Schedule (B/C/D) Estimating Tool Suite based off of previously flown space flight instruments across all of NASA. Includes objective-input-based parametric cost and schedule models, cost and schedule analogy tools and JCL capabilities.
1 lip 2021 · The J-2 rocket engine featured a bell-shaped thrust chamber, an injector, two direct-drive turbopumps, a gas generator, valves, engine-mounted electrical and pneumatic controls, and instrumentation. The initial fuel and oxidizer turbopump start impulse was delivered by an engine-mounted start tank pressurized with GH2.
1. The J-2X Mission and Requirements. The J-2X Upper Stage Engine (USE) exemplifies those goals and made significant progress in 2009 and 2010 in moving from a paper design to hardware for component and major assembly testing. It is based on the proven J-2 engine used on the Saturn IB and Saturn V launch vehicle upper stages.
Voyager photographed two-thirds of Neptune’s largest moon Triton, revealing the coldest known planetary body in the solar system and a nitrogen ice “volcano” on its surface. Spectacular images of its southern hemisphere showed a strange, pitted, cantaloupe-type terrain.
tion 2 specifies the global-average temperature on Triton given bolometric bond albedo, bolometric emissivity, global-average heatflow and the total thermal lumi-nosity of Neptune. The bolometric bond albedo of Triton was derived from Voyager images (1,12,15) and from the measurements of the Voyager 2 Photopolarimeter experi-ment (16).
