{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp06_four_proposal_generalization60_20260803","cell_id":"predictive_residual_processing__aviation_aeronautics","arm":"COMPLETE_PROPOSAL_PORTFOLIO","candidate_id":"prp-aviation-flight-test-residual-telemetry-001","proposal_index":1,"version":0,"title":"Reconstructive Residual Telemetry for Bandwidth-Constrained Flight Testing","problem":"During flight tests using a capacity-constrained air-to-ground link, high-rate structural-load, vibration, air-data, and control-response channels may spend link capacity repeatedly describing predictable behavior. Fixed channel selection or downsampling can then delay or omit short, decision-relevant departures from the expected response, while ground engineers lack enough context to distinguish an aerodynamic event from sensor noise, packet loss, or an onboard-model error.","actors":["Flight-test director","Flight-test instrumentation engineer","Telemetry and communications engineer","Ground-based loads and aeroelasticity engineers","Test pilot or remote pilot","Aircraft data-acquisition system owner","Independent flight-safety reviewer"],"observable_state":"In representative recorded sorties, the aggregate full-rate instrumentation stream exceeds the usable telemetry budget during at least some test points; repeated steady-state samples occupy transmitted frames while short cross-channel deviations are delayed, downsampled, or absent at the ground station. Missing packets and nominal silence are not consistently distinguishable, and engineers must later retrieve onboard recordings to reconstruct some events.","consequence":"The ground team may receive incomplete or late evidence about an uncommanded load, vibration, control-response, or air-data departure and may be unable to determine during the test point whether the aircraft response, a sensor, the link, or the expected-response model is responsible.","affected_objective":"Provide timely, interpretable evidence of unexpected aircraft response within the available telemetry budget while preserving bounded reconstruction error, independent raw evidence, and flight-safety escalation paths.","intervention":"For an initially non-operational evaluation, run matched, versioned predictors onboard and at a ground decoder for a narrowly declared set of flight-test measurement channels. Before each sample window, the onboard predictor estimates the expected multichannel response from the authorized flight-condition envelope, recent reconstructed state, and timestamped control inputs. The encoder computes signed residuals between predicted and measured values, weights them by measurement uncertainty, source health, and a predeclared consequence class, and transmits admitted residuals with sequence number, model checksum, uncertainty, and reconstruction metadata. The ground station reconstructs each channel as its matched prediction plus the received correction. Heartbeats make absent observations explicit. Safety-designated parameters, invalid sensor states, model-version mismatches, excessive cumulative reconstruction error, out-of-scope flight conditions, and drift triggers bypass suppression and request or transmit full frames. Scheduled and randomly selected raw windows travel through an independently retained audit path. Residuals and their contexts enter a replay buffer, but model changes occur only after post-flight engineering review and configuration approval; there is no autonomous in-flight learning or aircraft-control action.","structural_mapping":[{"archetype_element":"Prediction target and bounded scope","domain_realization":"Timestamped structural-load, accelerometer, selected air-data, actuator-position, and control-input channels for specified test points, flight-condition cells, sampling rates, prediction horizons, and reconstruction tolerances."},{"archetype_element":"Generative model and expected input","domain_realization":"A versioned forward-response model predicts the next measurement window from flight condition, recent reconstructed measurements, and issued control inputs before the corresponding sensor samples are compared."},{"archetype_element":"Actual observation with provenance","domain_realization":"The aircraft acquisition unit captures calibrated samples with sensor identity, quality state, time, sequence number, and acquisition configuration while retaining the authoritative onboard raw record."},{"archetype_element":"Prediction comparator and structured error","domain_realization":"The encoder calculates signed per-channel innovations and cross-channel residual features rather than reducing all departures to a single anomaly flag."},{"archetype_element":"Precision and consequence weighting","domain_realization":"A versioned table weights residuals using sensor uncertainty, current health, flight phase, parameter consequence class, residual persistence, and transmission cost."},{"archetype_element":"Residual propagation and reconstruction","domain_realization":"Only admitted quantized residuals and reconstruction metadata cross the constrained link during eligible periods; the matched ground predictor adds each correction to its expectation to reconstruct the monitored stream."},{"archetype_element":"Synchronization and freshness","domain_realization":"Checksums, ordered sequence numbers, validity clocks, heartbeats, and periodic full-state anchors prevent late or incompatible residuals from being interpreted against the wrong baseline."},{"archetype_element":"Update loop","domain_realization":"Validated post-flight residuals are replayed to identify model, sensor, threshold, or scope errors; proposed changes are tested and configuration-controlled before a later sortie."},{"archetype_element":"Independent raw audit","domain_realization":"Random raw windows plus risk-stratified windows around selected maneuvers are retained and compared independently with ground reconstructions, including residuals that the production gate suppressed."},{"archetype_element":"Drift, decompression, and safety bypass","domain_realization":"Structured residuals, staleness, checksum failure, sensor-invalid states, out-of-envelope conditions, or safety-class events suspend residual-only operation for the affected scope and restore full-frame transmission or a pre-existing safe telemetry configuration."}],"mechanism_mapping":[{"mechanism_slug":"predictive_codec","role":"Maintains matched onboard and ground predictors, encodes measured-minus-predicted corrections, and permits reconstruction of eligible flight-test channels within a declared fidelity budget.","counterfactual_removal":"Without it, the proposal becomes channel prioritization or anomaly alerting; expected content is not represented implicitly at both ends and the ground stream cannot be reconstructed from prediction plus residual."},{"mechanism_slug":"precision_weighted_error_gate","role":"Allocates scarce telemetry capacity according to residual size, measurement precision, consequence class, persistence, and channel cost while logging suppressed errors for audit.","counterfactual_removal":"A magnitude-only threshold would allow noisy large deviations to crowd out smaller reliable or safety-relevant departures and would detach suppression from an explicit error budget."},{"mechanism_slug":"model_version_checksum_handshake","role":"Gates residual decoding on compatible predictor state and tags every correction with the baseline against which it was computed.","counterfactual_removal":"A well-formed residual could be added to a different ground prediction and silently reconstruct the wrong aircraft response."},{"mechanism_slug":"periodic_full_state_resynchronization","role":"Supplies scheduled full-state anchors and trigger-driven reconciliation so packet loss, quantization, or state divergence cannot accumulate indefinitely.","counterfactual_removal":"A lost correction or small predictor mismatch could contaminate subsequent reconstructions for an unbounded interval."},{"mechanism_slug":"shadow_raw_channel_sampling","role":"Compares random and risk-stratified full observations against independently evaluated reconstructions to expose signals the predictor or gate learned to suppress.","counterfactual_removal":"Performance would be judged mainly from the residuals selected by the same system under test, leaving systematic blind spots unobservable."},{"mechanism_slug":"model_drift_monitoring","role":"Tracks residual mean, correlation, variance, calibration, context shift, and model age to determine when the declared validity envelope no longer holds.","counterfactual_removal":"A gradual change in aircraft configuration, sensor behavior, or test regime could be normalized as routine residual variation until reconstruction became unreliable."},{"mechanism_slug":"raw_signal_fallback_switch","role":"Restores full frames or the existing telemetry configuration when validity, synchronization, cumulative-error, or safety conditions fail, with hysteresis before re-entry.","counterfactual_removal":"The residual path could fail closed around an invalid model, forcing engineers to interpret suppressed or corrupted evidence precisely when complete observation is most necessary."},{"mechanism_slug":"surprise_to_action_bridge","role":"Packages a validated material residual with reconstructed context, criticality, and a named ground-console owner; operational responses remain those already authorized by the test plan.","counterfactual_removal":"Material residuals could appear as unowned diagnostic events without a defined review or escalation destination."}],"causal_chain":["A scoped forward model makes the predictable portion of selected high-rate flight-test measurements available at both ends of the telemetry link.","The onboard acquisition unit compares each actual sample window with the precomputed expectation and preserves signed, provenance-tagged residuals.","Precision and consequence weighting concentrates the constrained channel on reliable, decision-relevant mismatch while heartbeats distinguish nominal prediction from missing observation.","The ground decoder verifies model compatibility and reconstructs each eligible measurement from its own expectation plus the received correction.","Full-state anchors and independent raw samples reveal cumulative error, systematic suppression, and sender-receiver divergence.","Drift, staleness, out-of-scope context, safety classification, or excessive reconstruction error suspends residual-only processing and restores fuller transmission.","Ground specialists receive validated departures with baseline context and ownership rather than an unstructured high-volume stream.","Post-flight replay separates model, sensor, threshold, link, and scope failures; only reviewed changes enter a later configuration, closing a bounded learning loop."],"baseline":"The current comparison condition is full-rate transmission for a fixed priority subset of channels, combined with fixed-rate decimation or omission of lower-priority channels when the link budget is exceeded; authoritative raw data remain onboard for post-flight retrieval.","nearest_rivals":["Generic lossless or bounded-loss waveform compression without an explicit flight-response predictor, model-state handshake, consequence-weighted residual routing, or model-update loop","Fixed-rate downsampling and manually assigned telemetry channel priorities","Onboard limit checking or anomaly alerts that transmit events but do not let the ground station reconstruct the underlying stream","A conventional state estimator that uses innovations to estimate aircraft state but does not make reconstructive residual communication, raw-channel auditing, and bandwidth allocation the primary architecture"],"remaining_contrastive_claim":"The proposal's testable contrast is architectural: eligible ground measurements are reconstructed from a synchronized, inspectable flight-response prediction plus transmitted signed corrections, and the permission to suppress expected samples is continuously conditioned on independent raw audits, error budgets, and full-signal fallback. A rival that achieves the required link use and decision fidelity without those coupled elements would weaken the case for this intervention.","authority_safety":{"decision_authority":"The flight-test director retains operational authority. The instrumentation system owner and independent flight-safety reviewer must approve the evaluated channel scope, thresholds, bypass classes, and configuration. The proposal supplies information only and has no authority over aircraft control or continuation of a test point.","authorized_first_step":"Conduct an offline, shadow-mode replay on previously completed, fully recorded sorties. Generate predictions and simulated residual-link outputs without changing aircraft software, ground-console displays used for flight decisions, telemetry allocation, test procedures, or any operational decision.","excluded_actions":["No command to flight controls, propulsion, mission management, or vehicle guidance","No autonomous in-flight model, threshold, or consequence-weight update","No suppression, alteration, or deletion of the authoritative onboard raw recording","No replacement of required flight-safety, certification, range-safety, or test-plan telemetry channels","No automatic declaration that a test condition is safe, nominal, or cleared to continue","No use of residual silence as evidence of nominal state without a valid heartbeat and compatible model state"],"halt_rollback":"In shadow evaluation, stop analysis for any checksum mismatch, missing provenance, data-rights issue, or inability to reproduce the source record. In a later separately authorized trial, any heartbeat loss, version mismatch, stale model, out-of-scope condition, sensor-invalid state, audit-budget breach, structured drift, or safety-class trigger disables residual suppression for the affected channels and restores the pre-existing telemetry configuration; re-entry requires a clean full-state synchronization and authorized dwell period."},"negative_tests":{"strongest_counterevidence":"A fixed-priority stream, standard codec, or fixed-rate downsampling scheme meets the same preregistered telemetry budget, reconstruction tolerance, event-capture requirements, and operator decision needs with lower total computation, synchronization, audit, and review cost. This would show that the maintained residual architecture is unnecessary for the tested scope.","problem_falsifier":"Representative full-rate records and link logs show no material periods in which telemetry capacity, latency, or channel selection prevents the ground team from receiving the measurements needed for the defined test decisions, or interviews tied to specific sorties show that high-rate ground reconstruction is not needed during those decisions.","intervention_falsifier":"Under a replayed link budget and injected packet loss or model mismatch, the residual system fails a preregistered reconstruction or safety-event capture requirement, cannot reliably distinguish silence from missing data, enters fallback so often that it does not satisfy the capacity constraint, or produces no decision-relevant advantage over the strongest rival after model-maintenance and audit traffic are counted.","risks":["An overconfident predictor may subtract a real aeroelastic, gust, actuator, or sensor departure as expected behavior.","Quantization, packet loss, ordering errors, or version skew may create plausible but incorrect ground reconstructions.","Threshold tuning for a quiet console or a target transmission rate may suppress consequential small residuals.","Random audits may miss rare regimes, while risk-stratified audits may reinforce only known concerns.","Residual and fallback bursts may saturate the link at the moment fuller context is needed.","Engineers may anchor on reconstructed signals despite the authoritative raw record or uncertainty metadata.","Configuration or sensor changes may invalidate the model before realized-error evidence becomes available.","Post-flight updates may learn the consequences of test-pilot or controller responses as though they were external aircraft dynamics."]},"next_evidence_step":"Pre-register and execute one bounded offline replay using a fixed set of fully recorded sorties from one completed flight-test campaign, capped at ten sorties. Freeze the prediction target, eligible flight-condition envelope, model version, rival configurations, telemetry budget, safety-event definitions, reconstruction tolerances, and halt criteria before scoring. Simulate the recorded link constraints plus packet loss and model-version mismatch; compare the proposal with the current fixed-priority/decimation baseline, a standard codec, and onboard threshold reporting. Measure transmitted bits including synchronization and audit overhead, per-channel and consequence-weighted reconstruction error, event capture and latency, false escalations, heartbeat/missingness discrimination, fallback occupancy, residual structure, and disagreement with random raw windows. The output is a go/no-go decision for a later shadow ground display, not authorization for operational suppression.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Not applicable within this sealed response: this is the sole proposal specified here, and no comparison with other candidates was used.","revision_record":{"parent_version":null,"progress_targets_addressed":["Initial complete proposal derived only from the supplied archetype, mechanisms, and aviation domain card."],"conceptual_changes":[],"operational_changes":[],"evidence_changes":[],"claim_changes":[]}}