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TX14 — Thermal Management and Control

Created: 2026-04-06 (session 40)

Summary

TX14 covers heat acquisition, transport, rejection, and thermal protection across all NASA mission types. It is the KB's first documented 5-way boundary area — it touches TX01 (propellants/cryogenics), TX08 (sensors), TX09 (EDL/heat shields), TX12 (materials), and TX03 (power), producing the highest active-portfolio mismatch rate of any TX area examined (~41%). The cross-cutting nature means TX14 investment is structurally undervisible in TechPort: many thermal projects live in other TX areas and don't show up here.

Portfolio size: 981 total projects (snapshot 2026-04-04), 34 Active, 946 Completed.
Program split: 75.8% SBIR/STTR (744), 5% STRG (49), with TDM contributing a disproportionate share of the active high-TRL work.
TRL null rate: 45.2% — highest of any TX area examined. Thermal management projects are the least likely to have TRL populated in TechPort.

TX14 Taxonomy Structure

TX14 has three sub-areas with functionally distinct portfolios:

Sub-area Function Programs TRL typical
TX14.1 Cryogenic systems: cryocoolers, ZBO, CFM, insulation TDM, SBIR, STRG 3–6
TX14.2 Heat rejection: radiators, LHPs, variable emissivity, electrochromics SBIR, TDM, FO 3–7
TX14.3 Thermal protection systems: ablatives, TPS, heat shields, NDE SBIR, IRAD 4–9

The ML predictions confirm this structure: TX14.1.3 = cryocoolers, TX14.2.2 = heat rejection (moderate temp), TX14.2.3 = high-temp heat rejection/radiators, TX14.3.x = TPS materials.

TRL Distribution

Source: techport_portfolio_aggregate, filter={primaryTx: TX14}, snapshot 2026-04-04

TRL Count % of set
4 172 31.9% of populated
3 138 25.6%
5 71 13.2%
6 64 11.9%
7 21 3.9%
8 7 1.3%
9 1 0.2%
null 443 45.2% of total

Cliff at TRL 6→7: 64:21 = 3.1:1. Consistent with TX03 (Power, 4.2:1) and TX08 (Sensors, similar). The high-TRL completions that exist are mostly SBIR and are primarily modeling tools, materials, and flight instruments — not system-level flight demonstrations.

Counter-query: find_projects(technology_area="TX14", trl_min=7, status=null) → 29 projects. Distribution confirms few genuine high-TRL completions relative to portfolio size.

Active Portfolio (34 projects, April 2026)

Cluster 1: Cryogenic Fluid Management (CFM) — TDM flagship

The largest and most mature cluster. MSFC and GRC lead. Goal: enable long-duration LH2 storage and transfer for deep-space propulsion (Artemis upper stages, Mars missions, lunar propellant depots).

ID Title TRL Period Lead
116762 Cryogenic Demonstration Mission (CDM) 4→7 2021–Apr 30, 2026 Lockheed Martin + ABL Space
116758 LEAPFROG — LH2 transfer embedded in Centaur V 4→7 2021–Sep 2026 ULA
116757 LOXSAT 1 — LOX demo on Rocket Lab Photon 4→7 2021–Apr 2027 Eta Space
158365 Two Stage Cooling / Zero Boil Off 3→5 2020–2030 MSFC
158583 Decreasing Uncertainty of Cryogenic Transfer 3→5 2024–2029 GRC
158415 CFMPP Modeling Portfolio (CFD/nodal) — 2021–2030 MSFC
158537 RFMG NextGen (SDR-based mass gauging) 4→5 2023–2028 TDM

Full CFM cluster analysis: see topics/cfm-cluster.md — portfolio structure, 3 still-Active sub-projects, RFMG success (Blue Ghost), LEAPFROG on Centaur V, LOXSAT 1 on Rocket Lab Photon, CDM closeout April 30.

CDM [116762]: 17 critical LH2 CFM technologies in one integrated system — the portfolio's flight demonstration capstone. Partners: Lockheed Martin, ABL Space Systems, GRC, K T Engineering, MSFC. Ends April 30, 2026 — imminent closeout. TRL stuck at 4 vs. target 7. 3,014 views.

LEAPFROG [116758]: ULA Centaur V embedded LH2 experiment — transfers propellant from Centaur V main tank to LEAP auxiliary tank in microgravity. Embedded in operational launch hardware, so any Vulcan Centaur flight is a test opportunity. Ends Sep 2026.

LOXSAT 1 [116757]: Eta Space, LOX demo as primary payload on Rocket Lab Photon. 10 CFM technologies, 9-month mission. Ends Apr 2027 — most time remaining. TX01.1.3 (not TX14) is primary classification.

RFMG flight success: The predecessor project [105674] (RFMG for Intuitive Machines Nova-C) flew on IM-1, which landed on the Moon February 26, 2025. RFMG "had successful measurements throughout the mission." TRL 5→7. This is TX14's clearest flight validation to date. NextGen RFMG [158537] builds on this heritage.

SpaceX Starship connection: [105666] (Completed, TDM 2019-2020) had NASA and SpaceX jointly assess the Starship cryogenic architecture and define technology gaps. TRL 2→2 (CONOPS study only). This is the documented NASA-SpaceX coordination point for LH2 CFM relevant to Starship.

TX mismatch note: Almost all CFM projects have ML predicting TX01.1.x (propellant storage/transfer) rather than TX14. The "cryogenic = thermal" classification is correct engineering but creates the boundary confusion — these projects are fundamentally about propellant management, with thermal control as the enabling mechanism.

Cluster 2: Cryocoolers — TDM sustained investment

Creare LLC is the dominant contractor (Reverse Turbo-Brayton cycle). Two target temperatures: 20K (for LH2 ZBO and instrument cooling at cryogenic temperatures) and 90K (for oxygen liquefaction, instrument detectors).

ID Title TRL Period Lead
158564 20W/20K RTB Cryocooler Development 3→6 2020–Sep 2026 GRC
158657 90K Cryocooler Control Electronics 3→6 2020–Nov 2026 GRC
158524 Alternative Cryocooler Development 4→6 2024–2032 GRC
184510 30W/90K Cryocooler System (SBIR Phase III) 4→6 2025–2028 NASA Center/Creare
184511 Cup Recuperator (Creare heat exchanger mfg) 4→6 2025–Sep 2026 Creare

Completed predecessor: [158620] 150W/90K RTB Cryocooler Development, TRL 3→6, completed Dec 2024 — the reference design that the Cup Recuperator and 30W/90K variants improve upon.

[158524] Alternative Cryocooler runs to 2032 — the longest active TDM project in the TX14 portfolio, designed to broaden the industry base beyond Creare by developing cycle and vendor alternatives.

TX mismatch note: [158657] 90K Control Electronics — ML predicts TX08.1.6 (Sensor Systems). A cryocooler control electronics unit classified under sensors is a boundary artifact: cryocoolers are needed to cool sensors, so the ML sees the sensor application rather than the thermal hardware function.

Cluster 3: Nuclear/NEP Heat Rejection

Nuclear electric propulsion requires rejecting multi-MW of waste heat with radiators that can survive the space radiation environment and maintain emissivity over long missions. Three active SBIR projects address this:

ID Title TRL Period Lead
158735 High-Emissivity CVD Rhenium Coatings for NEP Radiators 3→5 2024–2026 Ultramet
158725 High-Temp Oscillating Heat Pipes for NEP/nuclear 4→4 2024–2026 Industry
158686 Robust Two-Phase Cooling (LHPs) for MW-Scale Spacecraft 4→5 2024–2026 Industry

[158725] TRL stagnation: TRL target = same as current (4→4). Either TRL was not updated at project start, or the project has made no documented TRL progress. Worth monitoring at closeout Oct 2026.

Historical completion: [17803] Low Cost Radiator for Fission Power (SBIR, GRC, TRL 4→7, 2014-2016) — this is the only fission-power heat rejection project in TX14 that has definitively reached TRL 7. It is the baseline for the current nuclear radiator SBIR cluster.

See also: topics/propulsion-theme.md Section 6 for full NEP context; topics/fission-surface-power.md for FSP radiator dependency.

Cluster 4: Lunar Night Survival Thermal

Two new GCD studies (both launched 2025) focused on thermal solutions for surviving the 14-day lunar night:

ID Title TRL Period Lead
184665 Advanced Thermal Control for Exploration 0 2025–Oct 2026 NASA Center
184608 STLN-TC-STUDY (Survive Lunar Night) 0 2025–Sep 2026 NASA Center

Both are feasibility studies (TRL 0), scoping the technical challenges for different mission types. TRL target = TRL 0 indicates these are analysis/roadmapping activities, not hardware development.

Completed SBIR successes that feed into this understanding: - [154816] Lunar vehicle thermal control for extreme lunar environments — TRL 5→8 (Completed 2024) - [154633] Electrochromic variable-emissivity skins for lunar rovers/structures — TRL 4→8 (Completed 2023) - [103096] MOWS — metal oxidation warming for lunar night (Masten Space Systems) — TRL 4→7 (Completed 2023) - [9580] High turndown electrochromic variable emissivity — TRL 6→8 (SBIR, Completed 2014, but heritage system)

The SBIR pipeline has delivered TRL 8 solutions for small payloads. The GCD studies are scoping whether these solutions scale to larger systems.

Cluster 5: Aircraft Electrification Thermal (ARMD crossover)

Two active SBIR projects address thermal management for megawatt-scale electric aircraft propulsion — a NASA ARMD priority:

ID Title TRL Period Lead
158769 Enhanced Motor Performance via Two-Phase Thermal Management 3→6 2024–2026 Industry
158745 Propellers with Integrated Thermal Management for Electrified Aircraft 3→5 2024–2026 Industry

These represent TX14's reach into ARMD territory. MW-scale electric motors for aircraft generate heat that limits power density — two-phase cooling within motor windings is the proposed solution. Note that these projects are TX14-classified despite being aeronautics applications; the thermal management function is the primary classifier.

Cluster 6: Novel Cooling Concepts (STRG academic bets)

Elastocaloric refrigeration — solid-state cooling via mechanocaloric (shape memory alloy) materials under cyclic stress/release. No moving parts, no refrigerants, potentially excellent gravimetric power density for space. Two TX14.X projects + one TX12 sibling (Iowa State [158653] in strg-active-portfolio.md):

  • 158568 Texas A&M — co-design of materials and systems, TX14.X, TRL 2→4, Jan 2024–Jan 2027, 1,385 views. ML predicts TX14.1.3 (within TX14 — no mismatch flag).
  • 158417 UIUC — continuous bending-mode elastocaloric composite, TX14.X, TRL 2→4, Jan 2024–Jan 2027, 1,369 views, txMismatch=Yes (ML→TX12.1.6). The ML sees the composite material and classifies it TX12; human sees the cooling function and classifies it TX14.

Both target TRL 4 (hardware demo), not just TRL 3 (modeling). Anomalously high view counts for STRG academic projects — solid-state refrigeration without CFCs draws broad public attention. Note: the third project ([158653] Iowa State, TX12.1.7) was classified by its PI as a materials project — the mirror of [158417]'s mismatch.

Ionic liquids — novel coolants with programmable thermophysical properties for extreme temperature ranges: - 156374 TRL 2→3, ionic liquids for spacecraft thermal control, ends Oct 2026 - 156379 TRL 2→3, PLASMa: precision ionic liquids, ends Oct 2026

Other advanced concepts: - 158642 Solid-state phase-change metamaterials for adaptive radiative control — TRL 2→3 - 158631 Pyrolytic graphite sheet laminates for space radiators — TRL 2→3 - 118313 Oscillating heat pipes for electronics cooling — TRL 2→3

All are 2024-2026/2027 STRG academic grants. At TRL 2-4, none are close to flight.

Taxonomy Boundary Problem

TX14 has the highest mismatch rate of any TX area examined: ~41% of active projects (14/34) have ML disagreements. The confusions map to five boundary pairs:

Boundary Direction Example
TX14.1 ↔ TX01.1 CFM projects → propellant storage CDM [116762], RFMG NextGen
TX14.2 ↔ TX01.4 Nuclear thermal mgmt → nuclear propulsion MARVL [158371] in propulsion-theme.md
TX14.3 ↔ TX09.4 TPS/ablatives → EDL EDL materials sometimes in TX14.3
TX14.1 ↔ TX08.1 Cryocoolers for sensors → sensor systems 90K electronics [158657]
TX14.x ↔ TX12.x Thermal materials → manufacturing/materials Elastocaloric composite [158417]

Key implication: Searching for "thermal management" by TX14 alone will miss: - MARVL [158371] (NEP radiator assembly, TX01.4.5 — see propulsion-theme.md) - FSP radiators (in TX03 — see fission-surface-power.md) - EDL TPS under TX09 (see topics/tx09-edl.md)

Confidence: suggestive (active portfolio sample n=34; broader historical portfolio not individually reviewed).

NIAC TX14 — All Completed

11 total NIAC TX14 projects, all Completed. 8/11 have mismatch flags — suggesting that NIAC reviewers assign TX14 to a wider range of concepts than the ML model considers thermal.

Notable pipeline: Cryogenic Selective Surfaces [91642, 88768] (NIAC Phase I+II 2015-2018) → Solar White Coating Development [158454] (TDM, TRL 3→4, completed 2024). The NIAC-to-TDM pathway for advanced thermal coatings is confirmed. Solar White achieved TRL 4 but did not mature further.

Solar Surfing [92615, 96128] (2017-2021): high-temp reflective coatings for spacecraft approaching the Sun. Parker Solar Probe context. Both Completed at TRL 2→3. No TechPort follow-on.

Flight Successes

ID Title Outcome Date
105674 RFMG on Intuitive Machines Nova-C Flew on IM-1, successful measurements during lunar landing Feb 2025
91339 DoVR — Variable Heat Rejection Radiator FO parabolic flight demo, TRL 4→7 2019
91346 MFEST — Two-phase flow microgravity demo FO suborbital, TRL 5→7 2019

RFMG is the most notable: it is the first cryogenic fluid management technology in this KB to achieve an actual lunar surface operation result. The Nova-C IM-1 mission context makes this the clearest TechPort-traceable flight success in TX14.

Open Threads

  1. CDM [116762] closeout — ends April 2026. Watch for outcome record and closeout documentation.
  2. RFMG NextGen [158537] — built on IM-1 success; ends 2028. Watch for flight demo.
  3. Alternative Cryocooler [158524] — 2024-2032 long-duration; key for Artemis lunar missions. Which vendors beyond Creare are being developed?
  4. Elastocaloric bets — [158568] Texas A&M + [158417] UIUC end Jan 2027. If either reaches TRL 4, file as a surprise (solid-state space cooling at TRL 4 would be notable). Iowa State sibling [158653] ends Feb 2027 at TRL 3.
  5. High-temp OHP [158725] — TRL 4→4 stagnation. Check closeout for why no TRL progress.
  6. STLN + Advanced Thermal Control studies [184608, 184665] — both end Sept-Oct 2026. Watch for whether they generate GCD hardware projects.

Cross-References