Aexion Synthesis
PLATFORM

One record of every test, from raw channel to conclusion.

The platform turns raw acquisition data into a single engineering record per test — every channel visualized, every derived parameter computed, every deviation flagged, with a plain-language explanation on top. Deterministic calculation produces the facts; the language model explains and assembles them, and never states an engineering conclusion without a computed metric behind it. The result is not a black box — it is a record you can defend in a review.

HOW MUCH ARRIVES PER FIRING

Sixteen tabs, ten, and eight — per test.

A firing does not return a summary page. It returns a descriptive report of sixteen tabs, a diagnostic report of ten, and eight campaign sections that place the run inside the series — the same structure every time, so the tenth firing is read exactly the way the first one was.

16
Tabs — descriptive report
Configuration, ambient conditions, chill-down, pre-test state, event timeline, ignition, performance, propellants, thermal, vibration, shutdown, video, objectives, data quality, inspection — each one a full tab, not a paragraph.
10
Tabs — diagnostic report
The second layer: why the firing behaved the way it did. Start classification, stability, feed coupling, thermal and structural response, and the findings that follow from them.
8
Sections — campaign report
Run-to-run trends, repeatability, configuration comparison and exit criteria for the series — recomputed as each new firing lands.

Every tab is generated from the same run, by the same core, in one pass. Nothing here is assembled by hand after the test.

DESCRIPTIVE REPORT — CONTENTS16 TABS
00Summary
01Configuration
02Ambient conditions
03Chill-down
04Pre-test state
05Event timeline
06Ignition
07Performance
08Propellant systems
09Thermal
10Vibration
11Shutdown
12Video evidence
13Objectives
14Data quality
15Post-test inspection

The diagnostic report adds ten tabs of its own and the campaign report eight sections. Nothing on this list is optional: where the data for a tab is missing, the tab states the reason instead of disappearing.

FINDINGS RAISED — ONE RUNSEVERITY · CHANNEL · MOMENT
CRITICAL
Chamber-pressure overshoot on ignition, +26% above steady-state
PC-01 · flagged t+0.42 s · ignition delay 0.52 s
REVIEW
Narrow-band oscillation at 38 Hz, 4.1% of mean thrust, coherent with feed pressure
THRUST-01, PF-02 · coherence 0.71 · t+2.1…9.6 s
NOMINAL
Steady-state window within limits, CV 3.1% about a mean of 352 kgf
THRUST-01 · t+2.1…9.6 s
WHAT THE PLATFORM ANALYSES

Twelve areas, in four groups.

Together these cover what a firing can be asked: what happened, how well the engine performed, how it started and held, and what the series says. Each area is a section of the report, not a feature on a list.

THE TEST RECORD01 · 10 · 11
01
Full test picture

Every acquired channel on one time base — thrust, chamber and feed pressures, propellant temperatures, mass flow, valve states — with statistics computed separately for the ignition transient, the steady-state window and shutdown, never averaged across them. An event timeline marks each command and each flag, and stand video is locked to the same clock, so a frame can be put next to the moment it belongs to.

10
Data quality

Before any conclusion, the report states what was measured reliably: which channels were present for the whole firing, where samples are missing, and where a calibration record could not be confirmed. A parameter that depends on an unverified input is marked unavailable rather than estimated — the boundary of the measurement is part of the result.

11
Post-test inspection

Inspection findings are attached to the run they belong to: what the hardware looked like after the firing, beside the data that preceded it. Erosion, deposits or a changed throat dimension become part of the record instead of living in a separate photo folder that nobody opens again.

PERFORMANCE AND FEED02 · 08
02
Engine performance

Characteristic velocity and its efficiency against a thermochemical baseline computed for your propellant pair and chamber conditions; thrust coefficient, specific impulse and mixture ratio tracked through the burn. Geometry, units and assumptions are printed next to every result, so a reviewer can check the derivation rather than trust the figure.

08
Feed system and valves

Line pressures and mass flows on both sides of the injector, and the valve sequence as commanded against the sequence as executed. A late or slow valve appears as a timing difference with a number on it, not as an unexplained step in a pressure trace.

START-UP AND STABILITY03 · 04 · 05
03
Ignition and start-up

The start is classified from the chamber-pressure trace: delay from valve command, peak-to-steady overshoot, and the ignition class that follows. Every flag carries the channel and the moment that raised it, so the classification can be argued with instead of accepted.

04
Oxidizer chill-down

Temperature gradients in the oxidizer line before the valve opens, read as a precursor rather than a footnote. A line that is not cold enough at the command is one of the few things a hard start announces in advance — if someone is looking at the right window.

05
Combustion stability

Thrust variation inside the steady-state window, its spectrum, and its coherence with feed pressure — which separates feed-coupled oscillation from combustion-driven behaviour. The resolved band is bounded by your acquisition rate and stated as such, never implied.

LOADS, SHUTDOWN AND THE SERIES06 · 07 · 09 · 12
06
Thermal state

Wall and nozzle temperatures across the firing, with rates and per-phase maxima. Thermal behaviour is reported by phase, so a slow soak-back after shutdown is not hidden inside an average taken over the whole burn.

07
Vibration

Structural response from the accelerometers on the stand and the article, in the same time base and the same windows as thrust — so a structural mode is not read as combustion instability, and the reverse.

09
Shutdown

Thrust tail-off, how the pressures come down, and the purge that follows. The shutdown window is measured rather than trimmed off, because a meaningful part of hardware life is spent in it.

12
Campaign and comparison

Run-to-run trends, repeatability across the series and exit criteria for the campaign; and two runs, or two hardware configurations, compared over matched windows. The comparison is computed, not eyeballed across two charts drawn on different scales.

COMPUTED FROM YOUR DATA

What the platform derives.

Every parameter below is computed from your own measurements by fixed formulas, with the geometry, units and assumptions shown next to the result. Where an input is missing — an uncalibrated channel, an absent flow measurement — the parameter is marked unavailable rather than estimated.

01
Characteristic velocity
c* = Pc · A* / ṁ
and its efficiency against a thermochemical baseline computed for your propellant pair and chamber conditions.
02
Thrust coefficient
CF = F / (Pc · A*)
from measured thrust, chamber pressure and throat area.
03
Specific impulse
Isp = c* · CF / g₀
from measured thrust and total mass flow.
04
Mixture ratio
O/F = ṁ_ox / ṁ_f
from oxidizer and fuel mass flow, tracked through the burn.
05
Thrust variation
CV = σ_F / F̄
over the steady-state burn window as a stability measure.
06
Ignition delay and chamber-pressure overshoot
Δt, Pc_peak / Pc_ss
with the resulting ignition class.
07
Phase statistics
t+0…2.1 · 2.1…9.6 · 9.6…10.4 s
ignition transient, steady-state burn window, shutdown — computed separately, never averaged together.
08
Feed-pressure correlation
r (F, PF-02)
with thrust, to distinguish feed-coupled oscillation from combustion-driven behaviour.
09
Propellant conditioning
∇T before valve opening
temperature gradients ahead of valve opening, as a precursor to hard starts.
10
Spectral content
f ≤ 200 Hz
of thrust and feed pressure, bounded by the acquisition rate and reported as such.
INGEST
Mapped once, reused after

Common acquisition exports are accepted as written. Channel names are mapped to a schema once per stand, then every later test flows through without manual preparation.

COMPUTE
Deterministic metrics

Derived parameters come from fixed formulas with stated geometry, assumptions and units. The same input always produces the same number.

EXPLAIN
The model explains, it does not calculate

Narrative is assembled from computed values. The language model never produces an engineering number, and no conclusion appears without a metric behind it.

AI ANALYST

How we keep it honest.

The analyst writes the read of a firing in plain language. It does not compute it. That division is the whole design: the numbers come from the deterministic core, the language comes from the model, and the two are never allowed to swap roles — which is why an answer can be checked instead of believed.

WHERE A NUMBER COMES FROM
METRIC
η_c* 0.90
WINDOW
t+2.1…9.6 s
CHANNELS
PC-01, MF-01/02
BASELINE
programme spec

Any figure in an answer resolves this way: metric, the window it was computed over, the channels behind it, and the baseline it was measured against.

THE RULES IT RUNS UNDER
It never invents numbers: every value comes from the deterministic computation core, not from the language model.
Every conclusion traces back to the channel, the time window and the report section it came from.
Where a metric is unavailable — a missing channel, an unconfirmed calibration — it says so instead of estimating around the gap.
It does not replace the engineer. It shortens the read; the decision stays with a specialist.
WHY THE SPLIT MATTERS
A model that computes can be fluent and wrong at the same time. A model that only explains can be checked line by line against the core that produced the figures.
WHAT WE DO NOT CLAIM

The limits, stated up front.

A tool that hides its boundaries is harder to trust than one that names them. These are ours.

01
We do not certify.

Reports are engineering analysis. They support a decision made by your team; they are not a compliance statement or a qualification credential.

02
We do not invent precision.

Measurement quality is bounded by your instrumentation and its calibration. Where calibration data is missing, the affected parameter is flagged — not quietly assumed.

03
We cannot see past your acquisition rate.

High-frequency combustion behaviour requires fast recording. If your data cannot resolve it, the report says so instead of implying coverage.

04
The engineer decides.

The platform compresses the time from firing to understanding. The judgement — fire again, change the sequence, open the hardware — stays with your team.

See your own test in the platform.

Send one firing's data — we return a full report.

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