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FlatlineDynamics
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FD/SYS · REGISTRYPROGRAMME INDEX · REV 2026.05
REGISTRY LIVE

ONE
LOADOUT.
ONE DOCTRINE.

Every Flatline programme is a tier of one operator's loadout, built to fit the carrier, share spares, and answer to the same constraints. Two programmes in prototype, one open. A fourth will only exist if it earns the slot.

PROGRAMMES
2 ACTIVE
OPEN SLOT
01
DOCTRINE
SHARED
SLOT LEDGER · FD-DOC-S2 / 4 OCCUPIED
01
KEYSTONE 25
CARRY · TIER 2
LIVE
02
SENTINEL HMD-1
OPTICS · TIER 1
EVAL · B01
03
WITHHELD
TIER · UNDISCLOSED
CLASSIFIED
04
[ NULL ]
TIER · UNALLOCATED
UNWARRANTED
×
PROGRAMME 03 · STATUSCO-DEV · OPEN
01
ACTIVE PROGRAMMES
◢◤ FD/REV.04

Active programmes.

01KEYSTONE · CARRY · TIER 2PROTOTYPE
KEYSTONE/25 · A03
AZ 028°
◢ DRAG TO ROTATE
FD-K25 · ORTHO
Keystone 25
REV · A03
MODULAR DAYSACK · EXTERNAL FRAME
Repair-forward. Weight-disciplined. Built around the principle that serviceability is a performance characteristic.
MASS1.18 KG
VOLUME24 L
FRAMEEXT · ALLOY
FASTENERS2 SIZES · 14
LOAD RATING32 KG
ACCESSCLAMSHELL
OPEN DOSSIER · KEYSTONE
02SENTINEL · OPTICS · TIER 1DEV
54° FOV
FOV 54°FIXED GEOMETRY
◢ DRAG TO SCRUB FOV
FD-HMD1 · B01
Sentinel HMD-1
REV · B01
HELMET-MOUNTED DISPLAY
Low-signature, single-cable. A documented, serviceable architecture for operational HMD, not a black box.
MASS285 G
INTERFACEUSB-C · SINGLE
FOV54° · FIXED
DISPLAYFIELD-SWAP
FWv0.4.1 · PUB
LATENCY< 16 MS
OPEN DOSSIER · SENTINEL
SLOT 03 / OPEN
Co-development.

The third programme isn't decided. We're listening for problems worth working on together. If you've got one, hold the line.

OPEN A CHANNEL ▸
02
DOCTRINE · PROGRAMME GOVERNANCE
◢◤ FD/REV.04

Five principles. One loadout.

Every programme answers to the same five constraints. Hover a card to see the evidence.
01
REPAIR-FORWARD
The operator services the loadout. Captured fasteners, two sizes, field spares kit. Every unit is built to be opened, fixed, and put back on the carrier without a workshop.
EVIDENCE
KEYSTONE 25 · 9 MIN · MEAN STRIP-AND-REBUILD
02
FAILURE · DESIGNED-FOR
Failure modes are catalogued, ranked, and engineered against, not hidden behind sealing margins. Hot-swappable modules, redundant paths, graceful degradation.
EVIDENCE
SENTINEL HMD-1 · DISPLAY SWAP UNDER POWER · 14 S
03
CLAIMS · GOVERNED
We publish only what we can demonstrate at the bench. Every spec on a Flatline datasheet is traceable to a test fixture and a test record.
EVIDENCE
EVERY SPEC · TEST RECORD ON FILE
04
DOCS · DELIVERABLE
Documentation is a deliverable, not a by-product. Repair manuals, fastener maps, harness pinouts, firmware interfaces, published with the hardware.
EVIDENCE
EVERY UNIT SHIPS FD-DOC-P · PUBLIC
05
CONSTRAINT-FIRST
Design works from the actual operating envelope outward, not from features inward. No feature is added without a recorded trade against mass, volume, or service access.
EVIDENCE
REVISION LOG · EVERY TRADE STAMPED
03
ARCHITECTURE
◢◤ FD/REV.04

Where Flatline modules sit in the stack.

Open architecture means the module owns its own interface: power, data, mounting, and service. Primes integrate. Operators field-service. Documentation is shared up and down the stack.
◢◤ INTEGRATION BUS · POWER / DATA / SPECOPEN
LAYER 01
Prime / Integrator
Owns the platform spec, the integration contract, and the certification posture.
PLATFORM · SPEC · CONTRACT
IFACE A
SPEC / IDD
▸▸▸
LAYER 02 · FLATLINE MODULE
Repair-forward · documented.
Owns its own interface, fastener discipline, spares, and field service. Documentation ships with the hardware.
FASTENERSSPARESIDDSERVICE
IFACE B
RAIL / MOLLE
▸▸▸
LAYER 03
Operator / Field
Services the module in the field with documented spares. No factory return required.
VEHICLE · OPERATOR · FIELD
◢◤ SERVICE BUS · SPARES / DOCUMENTATION / REVISION TRAILSHARED · UP & DOWN
04
ENGAGEMENT
◢◤ FD/REV.04

Two routes in.

Programmes are in active development. Engagement is conversational, not transactional. Registering interest opens a channel, not a contract.
EVALUATION INTEREST
For UKDI Innovation Partners, Dstl evaluators, and prime contractor innovation teams who want to be on the channel when evaluation cohorts open.
REGISTER INTEREST
TECHNOLOGY INSERTION
For integrators with a specific platform or programme where a Flatline module might fit. Conversations welcome at any TRL.
OPEN A CHANNEL
FLATLINE SYSTEMS · OPEN CHANNEL
Programmes are in active development.

Standalone modules that work together. Bring a problem worth working on · evaluation, integration, or co-development. Contact opens a channel, not a contract.