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GPDM Convergence — Three SST People Chains on One Mission

Filed: Session 15 (2026-04-14) Status: Active — GPDM has not yet launched

The Finding

The Green Propulsion Dual Mode (GPDM) mission (155369) is a convergence point for three SST people chains — all co-authors on the IEPC 2025 "Path to Flight" paper:

Person SST Origin GPDM Role
John Dankanich iSat PI (91492, MSFC, 2014–2017) MSFC Capability Lead for In-Space Transportation
Paulo Lozano Electrospray Explorer PI (95548, MIT, 2018–2024); founded Accion Systems (106827) MIT Professor, electrospray thruster supplier
E. Glenn Lightsey CubeSat AR&D Software (91360, JSC, 2013–2016); Lunar Flashlight controller (GA Tech SSDL) GA Tech Professor, spacecraft design & integration

Why This Is Surprising

Expectation: GPDM is an MSFC propulsion demo with MIT and GA Tech as contractors. Standard multi-center collaboration.

Reality: All three senior investigators have independent SST heritage spanning a decade: - Dankanich's iSat (2014) → GPDM (2022+): same person, same center, same goal (innovative propellant CubeSat), different architecture. 10-year institutional continuity. - Lozano's SST electrospray R&D (2018) → GPDM electrospray supplier: his lab's SST-funded technology IS the GPDM payload. Direct technology transfer. - Lightsey's JSC AR&D (2013) → GA Tech SSDL → Lunar Flashlight (2018) → GPDM spacecraft: his lab builds GPDM's bus. Inherited Lunar Flashlight partnership with MSFC.

Comparison to Other Convergences

Convergence # SST chains Type Domain
VISORS 4+ External (NSF mission) University science
SWARM-EX 3 External (NSF mission) University science
BeaverCube 2 Internal (MIT student mission) University tech demo
GPDM 3 Internal (NASA SST mission) Propulsion

GPDM is the first propulsion convergence and the first intra-NASA convergence — the others are all university/NSF missions. GPDM is also the only convergence where the technology itself (not just people) flows directly from SST projects.

Additional GPDM Lineage

The IEPC paper documents GPDM's multi-program funding chain: - GCD — MIT Micro Electrospray Propulsion (2013) - CIF — MSFC Center Innovation Fund: first ASCENT electrospray test - SBIR/STTR — hardware maturation - NSTRF — grad student electrospray lifetime research - SST — flight demonstration (current) - Lunar Flashlight heritage — ASCENT experience, GA Tech partnership, lessons from 3D-printed manifold failure

This makes GPDM the most multi-program SST project — it drew from 5+ STMD funding lines.

Open Question

GPDM was manifested for January 2026 launch (per IEPC paper, September 2025). As of April 2026, no launch confirmation found. TechPort last updated January 2026. The Jan 2026 Twilight rideshare (SpaceX) did not include GPDM. Launch may have slipped.

Confidence: confirmed (IEPC paper co-author list, TechPort records, prior SST project records)

Cross-References