EmberScope

Source-backed payload assembly

Open the box: every major subsystem now has a measured place.

The RFS-075 block model is now visible as five source-matched Blender views: exterior, service interfaces, optical-bay cutaway, electronics/thermal cutaway, and exploded assembly. Every rendered component comes from the committed 148 mm, 1.644 kg assembly source.

Review the assembly Open assembly guide Verify source hashes Download CAD packages

Assembly review

The exterior view closes the housing around a serviceable 70 mm-clear LWIR window.

148 mm Modelled outer span on all axes, leaving 2 mm total margin inside the 150 mm allocation.
1.644 kg Modelled payload mass including the current failed-candidate optical-envelope proxy.
0.356 kg Remaining reserve against the complete 2 kg payload budget.
0 clashes Axis-aligned component interferences and protected-clearance violations in the generated screen.
Three-quarter Blender render of the closed EmberScope payload housing with the serviceable LWIR window visible in its front carrier.
The front opening is cut around the modeled 78 x 78 x 4 mm window carrier; the cyan disk marks its 70 mm clear aperture. The exterior is engineering-development geometry, not a sealed or fabrication-released enclosure.
EmberScope payload allocation inside a 150 mm cube Block diagram showing optics, detector, electronics, window, housing, calibration reference, heat path, and drone adapter inside a 150 millimetre payload envelope. 150 mm payload cube housing, seals, mounts, and service clearance included Folded optics mirrors, stops, baffles Detector Boson+ branch Electronics capture, storage, timing Calibration reference LWIR window service boundary Heat path base conduction Drone adapter
The diagram is a payload allocation guide, not an enclosure drawing.
Subsystem Mass allocation Package allocation Design rule
Optical train, mirror cells, stops, and baffles 0.32 kg About 100 mm x 100 mm x 75 mm central optical bay Leave real clearance around the compact proof span for mounts, blackening, fasteners, and datums.
Detector core, carrier, shutter/reference allowance, thermal block 0.12 kg About 45 mm x 45 mm x 35 mm detector-side bay Use the Boson+ lensless path without forgetting carrier, cabling, and reference hardware.
Compute, storage, timing, geotag, and interface electronics 0.22 kg Side or rear electronics bay Preserve raw-frame capture, calibration state, alerts, and validation logs onboard.
Housing, weather sealing, LWIR window, and forebay 0.42 kg Full envelope boundary with wall and seal allowance Make the window the serviceable contamination boundary for smoke, dust, drizzle, and cleaning marks.
Drone adapter, vibration isolation, base plate, and trim 0.28 kg Bottom adapter zone Keep drone brackets separate from the optical datum structure.
Thermal spreader, straps, sensors, and passive margin 0.20 kg Conductive path to base and shaded housing faces Start passive and let radiometry decide whether active thermal control is needed.
Harness, connectors, fasteners, labels, and field-reference allowance 0.12 kg Distributed service allowance Reserve room for power/data strain relief, bench access, and reference-target handling.
Management reserve 0.32 kg Unassigned mass and volume margin Protect the sub-2 kg target from underestimated housing, bracket, and environmental-protection mass.

Interfaces and cutaways

The five views expose service paths and separate the optical and electronics bays.

Payload assembly with the top service panel lifted and the bottom drone-interface region exposed.
Top and bottom interfaces. The 104 x 99 mm top panel opens above the cassette extraction corridor; the separate 104 x 90 mm drone-adapter footprint and base heat path remain below the precision cassette.
Optical-bay cutaway showing the LWIR window, two baffles, cassette, reserved optical-core volume, and detector mount.
Optical-bay cutaway. The black 72 mm outer / 62 mm inner baffles sit behind the 70 mm-clear window; the amber wire box is the 92 x 92 x 84 mm optical keepout and the violet plate is the 38 x 38 mm detector mount. No ray path is implied.
Electronics and thermal cutaway showing compute and power trays, detector carrier, connector panel, heat spreader, and thermal straps.
Electronics and passive heat path. The blue 30 x 74 x 60 mm compute tray, red 30 x 20 x 50 mm power tray, side connector panel, copper straps, and 120 x 100 mm base spreader are distinct source components.
Exploded payload assembly with enclosure panels, optical cassette, window, detector mount, electronics trays, heat spreader, adapter, and fasteners separated.
Exploded service sequence. Enclosure faces move outward, the window and cassette separate forward, the electronics tray moves to the connector side, and the top panel and bottom adapter move away from the assembly. Eight modeled fastener locations remain visible.

Hash-traced review evidence

The static build fails if the render source or published pixels drift.

64840c30 Leading bytes of the canonical RFS-075 assembly-source SHA-256 recorded in the render manifest.
5 views Fixed exterior, interface, optical, electronics/thermal, and exploded scene states.
1600 x 1000 Each file is checked for expected dimensions, byte count, and SHA-256.
Blender 5.0.1 Recorded renderer version for this committed refresh; the scene contract remains the reproducible source.

The scene description is generated from the versioned RFS-075 assembly, optical-interface record, and mechanical validation result. The static build rechecks those inputs plus all five committed image hashes; changing a source coordinate without refreshing the views becomes a build failure.

The optical bay still consumes a replaceable interface rather than individual mirror coordinates. The wire volume uses the latest failed three-mirror candidate only as an envelope and mass proxy. It is not a depiction of mirror surfaces, a ray trace, or evidence that the candidate passes P2.

These files are engineering-development geometry. They are not CNC-ready, not fabrication-ready, and do not establish optical acceptance, tolerance, sealing, thermal, vibration, or manufacturing release.

Open render manifest Open scene contract Download assembly OpenSCAD Download envelope STL Open validation JSON Open mechanical manifest

Mechanical concept

A sealed optical cassette sits inside a serviceable outer payload.

The first payload layout should separate the precision optical frame from the drone adapter and weather shell. Mirror cells, detector datum, and internal stops belong to a bench-aligned cassette; window service, connector protection, and drone-specific brackets belong to the outer package.

The field concept avoids many operator adjustments. Factory align the cassette, lock the mirrors, leave one controlled detector-focus compensation if needed, and use calibration metadata to flag drift.

Power and thermal path

The first payload budget targets 8-12 W steady operation and holds 15 W as the design ceiling.

Detector and carrier

1 W is reserved for the low-SWaP detector branch plus carrier, interface, and shutter or reference handling.

Compute and storage

5 W supports raw thermal capture, candidate detection, local logging, and metadata stamping.

Interface and telemetry

2 W covers alert packets, status, and integration electronics without assuming continuous high-rate downlink.

Thermal allowance

2 W is reserved for anti-condensation, cold-start, or reference-target stability if field tests need it.

Field environment

The payload response is tied to the fireground exposures that can break thermal evidence.

Exposure Payload response Validation implication
Vibration and propwash Use a vibration-isolated adapter, locked mirror cells, strain relief, and a bench-vibration check. Translate optical sensitivity into acceptance limits for tilt, decentre, and focus shift.
Dust, ash, smoke residue, insects, and grass seeds Put a replaceable or cleanable LWIR-compatible window ahead of the optical cassette. Record window state, cleaning time, and post-clean reference frames in validation exports.
Light rain, humidity, and condensation Seal the cassette boundary, protect the connector, and reserve anti-condensation power. Field tests must include humidity notes, window checks, and rejected-frame flags.
Sun, hot vehicles, and warm fireground surfaces Use a light exterior finish, passive conduction to base, and temperature telemetry. Radiometry tests need warm-housing and cooling-after-flight cases.
Cleaning and service handling Make the window serviceable without disturbing mirror alignment. Operational procedures should separate window cleaning from optical realignment.

Assembly guidance

The modeled package now has a reviewable assembly and inspection path.

RFS-076 now exposes the RFS-075 components and service paths in a source-hash-traced review set. The views make packaging decisions inspectable without strengthening the underlying maturity claims.

RFS-077 now records the numbered bill of materials, make/buy split, provisional datum and alignment strategy, assembly order, fastener/access plan, handling, blackening, sealing, inspection, tool, and rework guidance against these views. Optical acceptance and tolerance evidence remain prerequisites for alignment-critical manufacturing files.