CS1 headline specification.

Public headline figures below. The detailed data sheet — sizing curves, interface geometry, fluid parameters, mount options — is shared with qualified teams through the request form.

TABLE 01 — CS1 · 150 KW CLASS PRELIMINARY · SUBJECT TO CHANGE

HEAT REJECTION

150 kW module — flight-proven class

ANCHOR LOAD

NVIDIA GB300 NVL72-class rack — ~140 kW, 117 cold-plate interfaces

RADIATOR

Metal tube-and-fin, two-sided — ~345 K, edge-on to sun

RADIATOR AREA

~110 m² deployable

WORKING FLUID

PGW — propylene-glycol-water, closed warm loop

LOOP FLOW

~2 kg/s at ~20 K rise

PUMP

N+1 redundant, hot-swappable BLDC — ~1–1.5 kW electric

COLD PLATE

Metal microchannel — baseline; direct-die / liquid-metal option in development

MOUNTING

A: direct GPU mount · B: solar-wing back mount

HERITAGE / TRL

Proven pumped-loop architecture — TRL 7 family

Figures describe the CS1 baseline configuration and reflect a flight-proven architecture class. Detailed performance data, interface geometry, and pricing discussions are handled through the qualified-buyer process below.

/ 01 DETAILED DATA SHEET

Request the CS1 data sheet.

Tell us who you are and what you're rejecting. The detailed sheet unlocks immediately, and an engineer follows up within two business days.

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Full CS1 data sheet — sizing, loop parameters, interfaces, mount variants A/B

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Optional ICD path for serious integrations, under NDA

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Engineering response within 2 business days

Technical depth beyond the public page is shared with qualified parties only, subject to export-control review. We don't share your details.

SPEC REQUEST — FORM 01 ~60 SECONDS

NAME *

WORK EMAIL *

COMPANY *

ROLE

BUYER TYPE *

HEAT LOAD (KW)

TARGET MISSION DATE

MESSAGE

Also open an ICD request — we'll start the interface-control conversation under NDA.

✓ ACCESS GRANTED {{ leadRef }}

The data sheet is unlocked{{ leadFirstName }}.

A copy is also on its way to {{ leadEmail }}, and an engineer will follow up within two business days. Your ICD request is logged — we'll send the NDA first.

Open the CS1 data sheet → Ready for intent? Submit LOI / PO →

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