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TX09 — Entry, Descent, and Landing Systems

Created: session 25, 2026-04-05 | Updated: session 26, 2026-04-05 | Data basis: GCD active portfolio sweep (session 22) + full TX09 MCP query (session 26)

Summary

TX09 covers the technologies required to deliver vehicles and payloads from space to a planetary surface: aeroshells, heat shields, deceleration systems, plume-surface interaction instrumentation, and entry system modeling. NASA's EDL investment is split between near-term Artemis/lunar landing needs (plume-surface interaction, landing simulation) and future planetary missions (Mars aerocapture, Venus entry, Titan/Dragonfly). GCD is the dominant program — TX09 is the second-largest technology area in the active GCD portfolio.

Confirmed: portfolio_aggregate(group_by=primaryTx, filter={status=Active, program=GCD}) from session 22 → TX09 = 11 projects / 20.4% of 54 active GCD projects. TX03 Power is #1 (25.9%), TX09 EDL is #2.

Scope note: This page covers STMD TX09 projects. EDL for human landing systems (HLS) is an operational program in ESDMD and is not in TechPort's STMD scope. The GCD TX09 portfolio is the technology maturation layer that feeds HLS and planetary missions.

Active GCD TX09 Portfolio

Complete inventory as of session 26. find_projects(program=GCD, technology_area=TX09, status=Active) → 11 projects confirmed. All 11 identified and profiled.

Plume-Surface Interaction (PSI) Cluster — LaRC-led

The most distinct sub-theme in the TX09 GCD portfolio. Landing rocket exhaust interacts with regolith/soil at the landing zone, creating debris fields, crater erosion, and sensor contamination. For Artemis lunar landing, the PSI problem is safety-critical — the plume can eject rocks at high velocity and the interaction dynamics aren't well-modeled.

Project ID Lead TRL Period Notes
PSI Instrumentation 147007 LaRC 2→5 2021–2027 Develops sensors to measure plume-surface interaction in real time
SCALPSS — Stereo Camera for Plume Surface Studies 116401 LaRC 6→7 2020–2026 Stereo camera for in-situ PSI documentation during CLPS landing; flight-proven
SCALPSS 2 184628 LaRC 5→6 2025–2030 Next-gen PSI imaging; adds Mars to destinations (SCALPSS 1 = lunar only); 5-year program

SCALPSS at TRL 7 is the highest TRL in the PSI cluster and one of the highest TRL values in the active GCD TX09 portfolio. TRL 7 = demonstrated in operational environment.

Flight history (confirmed session 28): - SCALPSS 1.0 on Intuitive Machines IM-1 (launched Feb 2024) — operated during transit and on the surface, but no science data collected (spacecraft tipped on landing, limiting experiment returns). - SCALPSS 1.1 on Firefly Aerospace CLPS 19D (launched Jan 2025, landed March 2, 2025) — operated during transit, lunar orbit, descent, and on the surface; full measurement objectives achieved → establishes TRL 7. - Remaining SCALPSS 1.x hardware delivered to Blue Origin for integration to Mk1 test flight (CLPS CT-3, planned mid-2025).

Library items are only news article links — no technical documents in TechPort.

SCALPSS 2 (184628) extends the PSI imaging program: TRL 5→6 target, 2025–2030, 5 years. Adds Mars as a target destination (critical for Mars Human Landing System). PM: Robert Maddock (LaRC). States: AL, OH, TX, VA — broader contractor base than SCALPSS 1.

LaRC PSI dominance: LaRC leads all three PSI projects, consistent with LaRC's historical strength in aerosciences. The plume-surface interaction problem is aerosciences at heart — hypersonic flow impinging on granular media.

EjectaBLAST — FO Complement to PSI (Truventic LLC)

158364 | Truventic LLC (Orlando, FL) | FO | TX07.2.5 | TRL 4→6 | 2024-02-01 – 2026-04-30 | 2,132 views | Active (closing April 30, 2026)

EjectaBLAST (Tethered Lander Operation of Ejecta Backscattered Laser Albedo and Sizing Tracker) is a laser light-scattering system mounted on a lander to characterize ejecta particles during lunar landing and launch. PI: Chris Fredricksen; Co-I: Robert E. Peale. Program Director/Manager: Danielle D. McCulloch (FO).

Technical approach: A laser illuminates ejecta particles blown off the surface by rocket plumes; backscattered light is captured to determine particle size distribution and albedo (reflectivity). "Tethered lander operation" implies the sensor is deployed by tether at some distance from the lander — providing a measurement platform that isn't directly shielded by the lander geometry.

Why TX07.2.5 (not TX09): Human classifier filed this under TX07.2.5 Particulate Contamination Prevention and Mitigation — focusing on the application (ejecta management). ML predicted TX09.4.5 Integrated Modeling and Simulation for EDL (txMismatch=Yes). Neither is obviously correct; the project is at the boundary of measurement (TX09) and contamination characterization (TX07). The laser sensor development itself might be TX08.

Relationship to GCD PSI cluster: SCALPSS (LaRC GCD) uses stereo cameras; EjectaBLAST uses active laser backscatter. These are complementary measurement approaches — cameras capture particle trajectories and cloud geometry; laser backscatter provides particle size and reflectivity. EjectaBLAST is FO (flight opportunities for test), not GCD (funded hardware development) — it's testing an instrument, not developing a sustained PSI measurement program.

TRL situation: TRL 4 → target 6. Closes April 30, 2026. From session 58: confirmed still at TRL 4 as of last check. Will miss TRL 6 target.

2,132 views is substantial for an FO project — indicates significant interest from the lunar landing community.

Cross-reference: topics/fo-active-portfolio.md — FO program context; psr-power-strg.md — PSR technology cluster (related lunar south pole priority)

Entry Modeling and Simulation — Ames-led

Project ID Lead TRL Period Views Notes
Entry Systems Modeling (ESM) 13633 Ames 4 (→5) 2012–2029 7,647 Backbone EDL simulation code; long-running flagship

ESM (13633) is notable on multiple dimensions: - 7,698 views (as of 2026-04-05) — highest view count among all active GCD projects. - 17-year active period (2012–2029) — one of the longest-running active STMD projects in TechPort. This is an infrastructure program. - TRL 4 for a modeling code is conceptually unusual — TRL for software is assigned based on physics fidelity and validation status, not hardware testing. - Confirmed infusion: ESM tools infused into Mars 2020, Orion/Artemis, Mars Sample Return, Dragonfly, and DAVINCI. This is the cross-mission EDL modeling backbone. - Four technical areas: (1) TPS materials (multiscale models, ablative response, damage/failure); (2) Shock Layer Kinetics & Radiation (radiation from planetary gas compositions); (3) Aerosciences (dynamic stability, parachute inflation, turbulent heating, CFD); (4) GNC (end-to-end simulation, precision landing for high-mass spacecraft). - 18 partner organizations including ESA, JAXA, DLR — international agencies co-invest in ESM tools. PM: Justin Haskins (also PM for FTI Portfolio below). - Library items: Only a conference paper link and project website — no rich briefing documents available in TechPort.

Implication: The GCD portfolio has a "simulation backbone" (ESM at TRL 4 with 17 years of investment) that underlies all physical hardware development in the TX09 cluster.

Dragonfly EDL — Ames

Project ID Lead TRL Notes
Dragonfly Entry Aerosciences Measurements (DrEAM) 116394 Ames 6 Entry at Titan; DAVINCI aerosciences

Dragonfly is the NASA NFS mission to Titan (launch 2028, arrival 2034). DrEAM develops the instrumentation and aerosciences data for Titan atmospheric entry — a fundamentally different EDL problem from Mars or Moon: dense nitrogen atmosphere, methane lakes, cryogenic temperatures. TRL 6 suggests instrumentation development is well advanced. Note: DrEAM may share heritage with MEDLI2 (Mars 2020 heat shield instrumentation, TRL 9 Completed).

Aerocapture and Hypersonic Reentry — LaRC/Ames

Project ID Lead TRL Period Notes
Aerocapture Demonstration 184620 LaRC 0→0 2024–2026 Study-only; characterizes aerocapture maneuver validation path; Mars + outer planet focus
STRATFI-Outpost 184623 Ames 0→0 2025–2029 AFRL STRATFI + Outpost Technologies Corp; deployable aeroshell + parafoil hypersonic testbed
STRATFI-Inversion 184643 Ames 0→0 2025–2028 AFRL STRATFI → DIU transfer + Inversion Space; aerodynamic decelerators

Aerocapture uses the atmosphere to brake a spacecraft into orbit without propellant. TRL 0→0 means the current Aerocapture Demo project (184620) is a pure study — no hardware demo, just concept definition and campaign planning. Ends Sep 2026 (18-month effort). PM: James Corliss (LaRC). Destinations: Mars, Others Inside Solar System — consistent with ice giant mission applications noted in the Decadal Survey.

STRATFI = Strategic Funding Increase — AFRL's mechanism to accelerate SBIR/STTR Phase-2 companies into Phase-3 transitions. NASA GCD is co-investing in these AFRL deals to gain mutual benefit for the LAND Domain (Lunar and Atmospheric/Neospace Delivery).

  • STRATFI-Outpost (184623): Outpost Technologies Corp is developing a commercial deployable aeroshell + parafoil system for hypersonic re-entry. The AFRL investment validates entry computational models + new deceleration systems. PM: Paul Wercinski (ARC). Destinations: Earth, Mars, Others. 2025–2029, 4 years.
  • STRATFI-Inversion (184643): Inversion Space is a commercial re-entry capsule company. This STRATFI started at AFRL and was transferred to the Defense Innovation Unit (DIU) — an unusual path. Focus: aerodynamic decelerators. PM: Matt Gasch (ARC). Destinations: Earth, Foundational Knowledge only. 2025–2028.

Commercial EDL investment: Outpost and Inversion are commercial companies developing re-entry vehicles for cargo return. NASA is co-investing via STRATFI rather than direct contracts — a model similar to COTS for cargo but at the technology (not mission) level. Neither project has a TRL set (0→0) — they're being tracked as GCD co-investments, not traditional GCD projects.

Venus / DAVINCI EDL Instruments — Ames

Project ID Lead TRL Period Notes
VISTA (Venus InStrumentation for Thermophysics and Aerosciences) 158550 Ames 5→7 2024–2033 DAVINCI ESI; ARC STAR Labs thermal plugs + radiometers for carbon-carbon heatshield validation

VISTA (Venus InStrumentation for Thermophysics and Aerosciences) is an Engineering Science Investigation (ESI) embedded in the DAVINCI mission (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging). ESIs are technology payloads that ride along on science missions to collect engineering data.

VISTA scope: Thermal plugs + Schmidt-Boelter total heat flux radiometers installed in the DAVINCI forebody heatshield (carbon-carbon composite). ARC STAR Labs fabricates the thermal plugs; Lockheed integrates them into the heatshield. LaRC provides aerosciences heating/shear analysis. Ground test campaign: vibration, shock, thermal vacuum, arc jet. PM: Edward Martinez (ARC).

Strategic value: DAVINCI's Venus descent provides a rare flight validation opportunity for carbon-carbon heatshield performance models. The same models are used for human spaceflight EDL at Earth and future Mars entry. A 9-year project (2024–2033) — the DAVINCI mission timeline.

TX9 not TX08: VISTA is correctly TX09.4.6 (Instrumentation and Health Monitoring for EDL), not TX08. The "instruments" here are heat flux sensors embedded in the TPS — they measure EDL performance, not science.

Portfolio Assessment Projects — Short-Duration (2025–2026)

Two 1-year portfolio assessment projects started Sep 2025, both ending Sep 2026:

Project ID Lead TRL Notes
Integrated System Assessment & Validation Portfolio (ISAV) 184646 JSC 2→6 Architecture study for precision landing + hazard avoidance; Moon, Mars, others
Flight Test Instrumentation Portfolio (FTI) 184652 Ames 2→6 EDL flight data capture capabilities: novel instrumentation, TPS sensors, aerosciences data

These are portfolio-assessment projects — studies evaluating technology investment strategies, not hardware development. TRL 2→6 targets for 1-year studies are aspirational metrics, not development commitments.

ISAV (184646): JSC-led (Gavin Mendeck PM). Focus: precision landing and hazard avoidance architecture for "landing zones as small as two adjacent football fields." Multi-destination (Moon, Mars, others). States: CA, MD, TX, VA.

FTI (184652): Ames-led (Justin Haskins PM — same PM as ESM 13633). Three capability areas: (1) novel instrumentation for flight data capture, (2) TPS material response sensor maturation, (3) aerosciences flight data analysis. States: CA, VA.

Pattern: Both projects are organizational portfolio planning — assessing what to invest in next, not producing hardware. The 2025 GCD push (66.7% of active GCD started 2025) includes both direct development (SCALPSS 2, STRATFI) and planning infrastructure (ISAV, FTI).

Completed TX09 Landmarks

Project ID TRL Mission Notes
MEDLI2 — Mars EDL Instrumentation 16854 9 Mars 2020 (Perseverance) Heat shield instrumentation; flew on Perseverance

MEDLI2 is the gold standard for GCD TX09 completions — TRL 9, deployed on an actual Mars mission. It measured aerodynamic and thermal performance of the Mars 2020 capsule during entry, validating heat shield models. This data feeds back into ESM and future Mars human EDL design.

MEDLI1 (on MSL/Curiosity, 2012) presumably preceded this as a GCD project — not captured in TechPort at this detail level.

Key Themes and Observations

1. Three Distinct EDL Regimes in One Portfolio

The GCD TX09 portfolio simultaneously addresses three different EDL regimes: - Lunar landing (PSI): Low-gravity, no atmosphere; the challenge is rocket exhaust on regolith - Mars/Venus aerocapture and entry: Thin/dense atmosphere; heating, deceleration, and instrument survival - Titan entry (Dragonfly/DrEAM): Dense cryogenic atmosphere with unique aerodynamics

These are not interchangeable technologies. LaRC leads the lunar regime (PSI), Ames leads the atmospheric entry regime. This division maps to historical NASA center competencies.

2. PSI Problem is Artemis-Critical

The plume-surface interaction cluster (PSI Instrumentation + SCALPSS) is directly Artemis-driven. The lunar surface is covered with fine regolith that becomes a high-speed projectile field under rocket exhaust. The HLS landing must characterize this risk. SCALPSS at TRL 7 is one of the few GCD active projects at operational demonstration level.

3. Aerocapture as a Strategic Technology

The aerocapture project (184620) joining GCD in 2025 is significant. Aerocapture has been studied for decades but has never flown as a primary mission sequence. If GCD successfully demonstrates aerocapture at the hardware level, it unlocks mission classes for outer solar system exploration (ice giants, Titan aerocapture for orbit) that are otherwise propellant-limited. The timing with Neptune/Uranus mission discussion in the Decadal Survey is not coincidental.

4. ESM as Hidden Infrastructure

ESM (13633) with 7,647 views is effectively a community-wide resource masquerading as a GCD project. It's the modeling backbone that every other TX09 (and many TX06/TX12) projects depend on for entry simulation. Its 17-year runtime and high view count reflect this infrastructure role.

5. Commercial EDL via STRATFI: A New Partnership Model

The two STRATFI projects (184623 Outpost, 184643 Inversion) represent a new GCD partnership model: NASA co-investing in AFRL Strategic Funding Increase awards with commercial re-entry companies. Distinct from SBIR (direct NASA funding), FO (flight opportunities), and COTS (mission service contracts), STRATFI is NASA riding along on DoD commercial investments — gaining EDL technology validation data at lower cost. Inversion Space transferred from AFRL to DIU before NASA joined, suggesting DoD is the primary investor. Neither project has TRL assigned (0→0) — GCD is not claiming TRL advancement from these partnerships, just data collection.

STRG TX09 — Computational Foundation Layer

24 active STRG projects in TX09, all TRL 2→3 or 2→4. The STRG portfolio is the computational modeling foundation beneath the hardware work in GCD and TDM. find_projects(program=STRG, technology_area=TX09, status=Active) → 24 results, session 62.

Composition: ~20/24 (83%) are computational — CFD codes, turbulence models, ablation models, parachute FSI algorithms, landing guidance algorithms. ~4/24 are experimental (lab-scale hypersonic flow diagnostics, plasma diagnostics). No flight hardware.

Key clusters:

Hypersonic simulation center — ACCESS [118383]: Multi-university consortium (Colorado, UIUC, Kentucky, Minnesota, New Mexico + Oxford, NCAR-Bari, Italian Institute). The flagship STRG investment in EDL simulation — 5,829 views, highest view count of any active STRG project identified in the KB. Active 2021–2026, TRL 2→4. Funded by Deans/Nguyen team.

MHD entry plasma cluster (2 projects): - [158557] Experimental MHD characterization in planetary entry plasmas — lab measurements of magnetic field effects on high-speed plasma flows during entry; provides data for models that assume MHD interactions affect heat flux distribution. - [156332] MHD for enhanced thermal protection + flight control — theory and modeling of using applied magnetic fields to induce Lorentz forces on ionized shock-layer gas; potentially reduces heat flux (MHD bypass) and enables flight control without aerosurfaces. TRL 2→3.

Why MHD matters for EDL: During hypersonic atmospheric entry, the shock-heated gas becomes a plasma (ionized). A magnetic field applied to the vehicle can interact with this plasma via Lorentz forces, pushing the shock standoff distance away from the vehicle surface — potentially reducing peak heat flux. The magnetic drag can also provide flight control forces. This has been studied theoretically since the 1960s but experimental validation at entry conditions remains sparse. STRG is funding both the experimental data and the theory.

Boundary condition conflicts (taxonomy mismatches): - [158641] Stanford "Adaptive World Models for Space Robotics" — TX09.4.5 (EDL simulation) but is actually ML-based world models for RPOD/surface robotics. Should be TX04/TX10. 413 views only. - [156373] Georgia Tech "Image-Based Relative Navigation" — TX09.4.5 but is visual RPOD navigation. Should be TX17.2.1. 744 views. - [158629] GRX-810 material modeling — TX09 but this is a new NASA-developed metal alloy. Should be TX12 (materials). 586 views.

Full STRG TX09 analysis: topics/strg-active-portfolio.md

SBIR TX09 Context

From the SBIR TRL pipeline analysis (sbir-trl-pipeline.md):

Metric Value
SBIR TRL 6 projects 51
SBIR TRL 7 projects 11
Advancement rate (6→7) 22%
Rank vs. other TX areas 2nd-worst (only TX07 Manufacturing is lower at 18%)

This is a significant finding: TX09 SBIR has one of the worst TRL 6→7 advancement rates in the portfolio. 78% of companies that reached TRL 6 in EDL-related SBIR work did not advance to TRL 7. The structural explanation is that TRL 7 in EDL typically requires actual flight test — either a planetary mission, an aircraft drop test, or a balloon/sounding rocket test — all of which are expensive and scarce. Without a flight test opportunity, EDL SBIR companies stall at ground-demo TRL 6.

Component types in TX09 SBIR (not yet analyzed at individual project level): - Deployable aeroshell / inflatable decelerator suppliers - TPS (thermal protection system) materials (ablatives, ceramics) - Pyrotechnic separation mechanisms - Entry vehicle structural components - Parachute / retrorocket components - Plume-surface interaction sensors (ground-test suppliers for the GCD PSI cluster)

The 22% advancement rate likely reflects the Flight Opportunities constraint: companies that can't get a flight test remain at TRL 6 indefinitely. This mirrors the Ohalo III food production story (TRL 6 stall since 2019) and the broader TRL 6 plateau seen across the portfolio where flight opportunities are the binding constraint.

Open Threads

  1. ~~SCALPSS flight context — resolved (session 26): SCALPSS 1.1 flew on Firefly CLPS 19D, landed March 2, 2025. Full measurement objectives achieved → TRL 7 established. SCALPSS 1.0 on IM-1 (Feb 2024) achieved no science (spacecraft tipped). Next: Blue Origin Mk1 integration.~~
  2. TX09 SBIR supply chain — 22% TRL 6→7 advance rate. What specific companies are stuck? Is the bottleneck flight test opportunities (FO slots)? Run SBIR TRL distribution filtered to TX09 to characterize the stall.
  3. DrEAM TRL 6 — What is the TRL 6 basis? Titan simulation chamber? Arc jet test? Fetch project 116394 full detail + library items.
  4. DAVINCI/VISTA timeline — DAVINCI launch date not yet confirmed. VISTA (2024–2033) implies 9 years of development. When does DAVINCI launch? This determines the timeline pressure on VISTA instruments.
  5. Outpost/Inversion flight test outcomes — STRATFI projects collect EDL validation data. When are the flight tests? What data will NASA receive? Follow up in 2026–2027 when tests are scheduled.
  6. ISAV/FTI output — Both 1-year portfolio studies end Sep 2026. What investment decisions will they inform? These feed the next generation of GCD TX09 funding decisions.

Cross-References

Confidence: confirmed — portfolio structure from session 22 aggregate query; all 11 projects now profiled from direct MCP query (session 26). ESM, SCALPSS, DrEAM, VISTA from live API; new 2025 projects from batch cache. Key uncertainties: SCALPSS flight host unconfirmed; Aerocapture Demo TRL 0→0 (study only); STRATFI project TRL unassigned.