{ "model": { "rank": 10047, "code": "thing-q723916", "model_id": "vr.tr.turbojet", "name": "turbojet", "purpose": "Let an agent explain the turbojet and how it works, relay its history and performance from aviation references, distinguish it from turbofans, turboprops and ramjets, and route to entries for specific engines without operational or military detail.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.OBJ", "industry": "", "version": "", "url": "/models/thing/q723916/", "tier": 2, "score": 46, "payload": { "layer": "wikidata", "aliases": [ "JT3D-3B", "Pratt & Whitney Canada PW545B", "geared turbofan", "Pratt & Whitney Canada PW500", "de Havilland Goblin", "Pratt & Whitney JT8D-1", "Pratt & Whitney JT8D-17", "Pratt & Whitney JT8D-219", "Pratt & Whitney JT8D-9", "SO-1", "AL-7", "twin-circuit turbojet", "Tumansky R-13", "Tumansky KR-17A", "Rolls-Royce RB162", "M-701", "Ishikawajima-Harima J3", "MS400 turbofan engine", "Rybinsk RD-41", "WSK K-15", "WSK K-16", "Soyuz R27F-300", "WP-6", "Small, low-cost, expendable turbojet engine", "RB.37 Derwent", "General Electric J73", "J85", "Westinghouse 19XB", "Lyulka TR-1A", "Tumansky RD-20", "Microturbo TRI 40", "Atar 101", "Rolls-Royce Olympus", "Pratt & Whitney J42", "Pratt & Whitney JT3", "JT4", "Rolls-Royce RB.26", "Rolls-Royce Soar", "Lyulka AL-21", "Dobrynin RD-7" ], "aliasCount": 499, "merged": 502, "knownIn": 46, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q723916", "url": "https://www.wikidata.org/wiki/Q723916", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T00:57:20Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q723916", "registryId": "vr.tr.turbojet", "name": "turbojet", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q723916/", "model": { "registry_id": "vr.tr.turbojet", "name": "turbojet", "purpose": "Let an agent explain the turbojet and how it works, relay its history and performance from aviation references, distinguish it from turbofans, turboprops and ramjets, and route to entries for specific engines without operational or military detail.", "definition": "An airbreathing gas turbine jet engine in which all the air passes through the compressor, combustor and turbine and is expelled as a high-speed jet, the earliest form of jet engine, pioneered by Whittle and von Ohain and used in early jets such as those powered by the de Havilland Goblin, later largely replaced for airliners by turbofans such as the Pratt and Whitney JT3D and JT8D and geared turbofans, which the registry lists as aliases; pure turbojets remain in some military, missile and small aircraft uses.", "what_it_is_for": "Propelling aircraft by jet thrust.", "affordances": [ "explain principle and components", "relay history and performance", "distinguish from other jet engines", "route to specific engines" ], "distinguishing_features": [ "No bypass", "High jet velocity", "Poor subsonic efficiency", "Historical primacy" ], "appearance": "A cylindrical engine with an intake, compressor, combustor, turbine and nozzle.", "visual_identification": [ "Gas turbine with all air through the core", "Whittle and von Ohain engines, Goblin, early jets", "Turbofans bypass air around the core; turboprops drive propellers" ], "physical_properties": [ { "quantity": "first flight", "typical_range": "1939", "unit": "year", "note": "Heinkel He 178" }, { "quantity": "typical specific fuel consumption", "typical_range": "about 0.8-1.0", "unit": "lb/lbf/h", "note": "subsonic" } ], "families_and_kinds": [ "centrifugal-flow turbojets such as the Goblin", "axial-flow turbojets", "afterburning turbojets", "small turbojets for missiles and drones", "turbofans as successors, including the JT3D, JT8D, PW500 and geared turbofans" ], "related_models": [ { "relation": "is a kind of", "target": "airbreathing jet engine", "why": "in registry terms" }, { "relation": "is a kind of", "target": "gas turbine", "why": "in general terms" }, { "relation": "was succeeded by", "target": "turbofan", "why": "for most aircraft" }, { "relation": "was pioneered by", "target": "Frank Whittle", "why": "and Hans von Ohain" } ], "identifiers": [], "standards_and_regulation": [ "Aircraft engine certification rules", "Noise and emissions standards", "Export controls on engine technology" ], "failure_modes_and_hazards": [ "Compressor stall and surge", "Foreign object damage", "Confusing turbojets with turbofans", "Providing sensitive military detail" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "How a turbojet works.", "rationale": "Science.", "layers": [ { "id": "principle", "name": "Principle", "description": "Principle.", "findings": [ { "id": "principle-finding", "name": "Principle", "description": "Principle.", "questions": [ { "text": "How does a turbojet produce thrust, and what is the Brayton cycle?", "kind": "definition" }, { "text": "Is the engine a turbojet, turbofan, turboprop or ramjet?", "kind": "boundary" } ] } ] }, { "id": "components", "name": "Components", "description": "Components.", "findings": [ { "id": "components-finding", "name": "Components", "description": "Components.", "questions": [ { "text": "What are the intake, compressor, combustor, turbine, afterburner and nozzle?", "kind": "definition" }, { "text": "Which entry fits the specific component?", "kind": "action" } ] } ] } ] }, { "id": "compare", "name": "Compare", "description": "Performance and comparison.", "rationale": "Engineering.", "layers": [ { "id": "performance", "name": "Performance", "description": "Performance.", "findings": [ { "id": "performance-finding", "name": "Performance", "description": "Performance.", "questions": [ { "text": "How do thrust, fuel consumption and speed range compare with turbofans?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "successors", "name": "Successors", "description": "Turbofans.", "findings": [ { "id": "successors-finding", "name": "Successors", "description": "Successors.", "questions": [ { "text": "Why did turbofans such as the JT3D and JT8D and geared turbofans replace turbojets?", "kind": "provenance" }, { "text": "Which entry fits the specific engine?", "kind": "action" } ] } ] } ] }, { "id": "history", "name": "History", "description": "History.", "rationale": "Context.", "layers": [ { "id": "invention", "name": "Invention", "description": "Invention.", "findings": [ { "id": "invention-finding", "name": "Invention", "description": "Invention.", "questions": [ { "text": "How did Whittle and von Ohain develop the turbojet, and what were the first jet aircraft?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] }, { "id": "use", "name": "Use", "description": "Use and decline.", "findings": [ { "id": "use-finding", "name": "Use", "description": "Use.", "questions": [ { "text": "How were turbojets used in airliners and military aircraft, and where are they still used?", "kind": "provenance" }, { "text": "Is the question seeking military operational detail, which the model does not give?", "kind": "boundary" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Regulation and industry.", "rationale": "Context.", "layers": [ { "id": "regulation", "name": "Regulation", "description": "Certification and noise.", "findings": [ { "id": "regulation-finding", "name": "Regulation", "description": "Regulation.", "questions": [ { "text": "How are jet engines certified, and how did noise rules affect turbojets?", "kind": "provenance" }, { "text": "Which entry fits aircraft noise?", "kind": "action" } ] } ] }, { "id": "industry", "name": "Industry", "description": "Manufacturers.", "findings": [ { "id": "industry-finding", "name": "Industry", "description": "Industry.", "questions": [ { "text": "Which manufacturers built turbojets, and what is the industry today?", "kind": "provenance" }, { "text": "Which entry fits the specific manufacturer?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should turbofan be the primary linked entry for the aliases?", "How should engine references be linked?", "The registry entry has merged aliases naming turbofan models; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "device, machine or tool", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a turbojet, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain the turbojet and how it works, relay its history and performance from aviation references, distinguish it from turbofans, turboprops and ramjets, and route to entries for specific engines without operational or military detail.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: JT3D-3B, Pratt & Whitney Canada PW545B, geared turbofan, Pratt & Whitney Canada PW500, de Havilland Goblin, Pratt & Whitney JT8D-1, Pratt & Whitney JT8D-17, Pratt & Whitney JT8D-219, Pratt & Whitney JT8D-9, SO-1, AL-7, twin-circuit turbojet.", "502 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 46 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a turbojet, and on what evidence are they told apart?" ], "whatItIsMadeOf": "matter you can touch", "physicalCharacter": [ "Mobility varies between examples.", "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Recognised by form, by the arrangement of its controls, and by markings - a plate, a model number, a certification mark. Form alone rarely separates two models that do very different things." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "JT3D-3B", "Pratt & Whitney Canada PW545B", "geared turbofan", "Pratt & Whitney Canada PW500", "de Havilland Goblin", "Pratt & Whitney JT8D-1", "Pratt & Whitney JT8D-17", "Pratt & Whitney JT8D-219", "Pratt & Whitney JT8D-9", "SO-1", "AL-7", "twin-circuit turbojet" ] } ], "standing": "Described in 46 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 502 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one turbojet from another, and a turbojet from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a turbojet sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a turbojet from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "form-and-composition", "name": "Form, composition and condition", "description": "What a turbojet is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "measurable-dimensions-q02", "text": "Who or what asserted this about the dimensions of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "measurable-dimensions-q03", "text": "What may an agent decide or do once the dimensions of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "material-and-composition", "name": "Material and composition", "description": "Materials, parts and how they are put together.", "findings": [ { "id": "parts-and-materials", "name": "Parts and materials", "description": "What a turbojet is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "parts-and-materials-q02", "text": "Who or what asserted this about the composition of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "parts-and-materials-q03", "text": "What may an agent decide or do once the composition of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "condition-and-integrity", "name": "Condition and integrity", "description": "Wear, damage, health and the difference between working and broken.", "findings": [ { "id": "condition-assessment", "name": "Condition, damage and health", "description": "How the condition of a turbojet is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "condition-assessment-q02", "text": "Who or what asserted this about the condition of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "condition-assessment-q03", "text": "What may an agent decide or do once the condition of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "place-and-movement", "name": "Place and movement", "description": "Where a turbojet is, how it got there and where it may go (varies).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a turbojet is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "position-and-frame-q02", "text": "Who or what asserted this about the location of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "position-and-frame-q03", "text": "What may an agent decide or do once the location of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "movement-and-transfer", "name": "Movement and transfer", "description": "How a turbojet is carried, installed or relocated.", "findings": [ { "id": "movement-events", "name": "Movement events and constraints", "description": "What counts as a movement, what records it and what limits it.", "questions": [ { "id": "movement-events-q01", "text": "What identifies and describes the movement of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "movement-events-q02", "text": "Who or what asserted this about the movement of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "movement-events-q03", "text": "What may an agent decide or do once the movement of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a turbojet passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a turbojet between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a turbojet, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a turbojet is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "function-and-principle", "name": "Function and operating principle", "description": "What turbojet is for and how it achieves it.", "rationale": "Two devices with the same name can work on different principles, and the principle is what predicts failure and constrains use.", "layers": [ { "id": "intended-function", "name": "Intended function", "description": "The job it does, and the jobs it is used for anyway.", "findings": [ { "id": "function-record", "name": "Function, principle and variants", "description": "What it does, how, and which variants do it differently.", "questions": [ { "id": "function-record-q01", "text": "What function does turbojet perform, on what operating principle, and which variants differ in that principle?", "kind": "definition" }, { "id": "function-record-q02", "text": "What use falls outside the intended function but happens in practice?", "kind": "boundary" } ] } ] }, { "id": "capacity-and-rating", "name": "Capacity and rating", "description": "The numbers that say what it can do and where it stops.", "findings": [ { "id": "ratings", "name": "Ratings and their conditions", "description": "Rated capacity, power, throughput and the conditions each assumes.", "questions": [ { "id": "ratings-q01", "text": "What ratings characterise turbojet, in what units, and under what stated conditions?", "kind": "measurement" }, { "id": "ratings-q02", "text": "What happens beyond the rating - degradation, refusal, damage - and how is that detected?", "kind": "action" } ] } ] } ] }, { "id": "operation-and-state", "name": "Operation, controls and state", "description": "How turbojet is operated and what state it is in right now.", "rationale": "An agent acting on a device needs its current state and the controls that change it, not just its specification.", "layers": [ { "id": "controls-and-modes", "name": "Controls and modes", "description": "What can be set, what that changes, and what is interlocked.", "findings": [ { "id": "control-surface", "name": "Control surface and interlocks", "description": "The settings available and the conditions that block them.", "questions": [ { "id": "control-surface-q01", "text": "What controls and modes does turbojet have, and what does each change?", "kind": "definition" }, { "id": "control-surface-q02", "text": "Which actions are interlocked or forbidden in which state, and what must be true before acting?", "kind": "action" } ] } ] }, { "id": "condition-and-maintenance", "name": "Condition and maintenance", "description": "Wear, service intervals, consumables and the line between working and broken.", "findings": [ { "id": "service-record", "name": "Condition, service and consumables", "description": "What is consumed, what is serviced, and how condition is judged.", "questions": [ { "id": "service-record-q01", "text": "What consumables and service does turbojet need, at what interval, and on whose authority?", "kind": "measurement" }, { "id": "service-record-q02", "text": "What evidence separates a unit that is working from one that is out of service?", "kind": "boundary" } ] } ] } ] }, { "id": "kind-model-unit", "name": "Kind, model and unit", "description": "Whether a claim about turbojet is about the kind, a product line, or one physical unit.", "rationale": "This is the boundary most often got wrong for made things, and getting it wrong mixes a catalogue entry with the machine in the yard.", "layers": [ { "id": "level-of-reference", "name": "Level of reference", "description": "The three levels and what belongs at each.", "findings": [ { "id": "level-rules", "name": "What belongs to kind, model and unit", "description": "Which properties are shared by all of them and which are not.", "questions": [ { "id": "level-rules-q01", "text": "Which facts about turbojet hold for every one of them, which for a model, and which only for one unit?", "kind": "boundary" }, { "id": "level-rules-q02", "text": "What identifies an individual unit, and what should an agent do when it has only the kind?", "kind": "action" } ] } ] }, { "id": "standards-and-conformity", "name": "Standards and conformity", "description": "The standards a working example must meet and who attests it.", "findings": [ { "id": "conformity", "name": "Standards, marks and attestation", "description": "Which standard applies, who certifies, and what the mark means.", "questions": [ { "id": "conformity-q01", "text": "Which standards govern turbojet, issued by whom, and what does conformity actually assert?", "kind": "provenance" }, { "id": "conformity-q02", "text": "What may an agent conclude from a certification mark, and what may it not?", "kind": "boundary" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a turbojet came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a turbojet and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a turbojet is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a turbojet, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a turbojet, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a turbojet is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 8, "layers": 17, "findings": 19, "questions": 51 } } } }