{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.fokker-v-8","code":"thing-q1989152","url":"https://ver.cy/models/thing/q1989152/","name":"Fokker V.8","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The Fokker V.8 was a German experimental single-seat aircraft built in 1917, distinguished by five main wings arranged as a forward triplane group and an aft biplane group.","purpose":"Enable an agent to identify the Fokker V.8 experimental aircraft design, assess evidence about its configurations and trials, and distinguish documented capabilities from reconstruction assumptions.","scope":{"in":["V.8 designation, historical identity and relationships to neighbouring Fokker designs","Forward triplane and rear biplane geometry, including configuration changes","Propulsion installation, mass distribution and flight-control arrangements","Prototype trials, reported behaviour and termination of development","Evidence needed to evaluate identifications, specifications and reconstructions"],"out":["General theory and classification of multiplane aircraft","Complete models of the Fokker V.6 and Dr.I","Fokker company history and designers' biographies","Individual replica construction, maintenance and airworthiness records","General First World War military aviation history"],"boundaries":[]},"distinguishingFeatures":["Look for five main wings arranged as a forward stack of three and a separate rear stack of two; do not count the tailplane as a sixth main wing. [Fokker historical overview](https://www.fokker-history.com/en-gb/v-8)","Check the cockpit's position immediately ahead of the rear wing group when identifying photographs. [Fokker historical overview](https://www.fokker-history.com/en-gb/v-8)","Require evidence connecting the designation V.8 to the experimental five-wing design; the numeral alone does not identify an engine configuration.","Distinguish the V.8 from the Dr.I by its additional rear wing group, rather than treating every Fokker aircraft with a forward triplane stack as a Dr.I."],"structure":{"bundles":[{"id":"identity-and-design-lineage","name":"Identity and design lineage","description":"Establishes which records concern the registered V.8 design and what relationships they support.","layers":[{"id":"designation-and-referent","name":"Designation and referent","description":"Separates the design from its prototype and later representations.","findings":[{"id":"v8-record-attribution","name":"V.8 record attribution","description":"Record designation evidence alongside the kind of object or depiction being identified.","questions":[{"text":"What designation, caption or archival identifier connects this record specifically to Fokker V.8?","id":"v8-record-attribution-q01","kind":"provenance"},{"text":"Does the record describe the design, the historical prototype, a replica or a scale model?","id":"v8-record-attribution-q02","kind":"boundary"}]}]},{"id":"related-fokker-designs","name":"Related Fokker designs","description":"Tests component inheritance separately from resemblance and experimental motivation.","findings":[{"id":"documented-lineage","name":"Documented lineage","description":"A historical overview reports reuse of V.6 parts; identify the actual components before inheriting their specifications. [Fokker historical overview](https://www.fokker-history.com/en-gb/v-8)","questions":[{"text":"Which drawings, workshop records or contemporary accounts identify components transferred from the V.6?","id":"documented-lineage-q01","kind":"provenance"},{"text":"Which claimed links to the Dr.I concern design motivation rather than identical structure or dimensions?","id":"documented-lineage-q02","kind":"boundary"}]}]}]},{"id":"tandem-wing-configuration","name":"Tandem wing configuration","description":"Describes the two separated wing groups and the evidence for their geometry.","layers":[{"id":"wing-group-geometry","name":"Wing-group geometry","description":"Records each wing's position and dimensions within a dated configuration.","findings":[{"id":"configuration-specific-layout","name":"Configuration-specific layout","description":"Keep measured geometry separate from estimates derived from perspective images.","questions":[{"text":"What are the span, chord, gap, stagger and incidence of each wing in the configuration being described?","id":"configuration-specific-layout-q01","kind":"measurement"},{"text":"What establishes the longitudinal separation between the forward and rear groups, and with what uncertainty?","id":"configuration-specific-layout-q02","kind":"measurement"}]}]},{"id":"wing-interaction-and-support","name":"Wing interaction and support","description":"Connects the unusual layout to structural support and aerodynamic hypotheses.","findings":[{"id":"interaction-evidence","name":"Interaction evidence","description":"Treat interference, load sharing and attachment behaviour as questions requiring geometry or test evidence.","questions":[{"text":"What evidence establishes the attachment and bracing arrangements of the rear biplane group?","id":"interaction-evidence-q01","kind":"provenance"},{"text":"What observations or defensible analyses support claims about the forward group's wake affecting the rear group?","id":"interaction-evidence-q02","kind":"provenance"}]}]}]},{"id":"propulsion-controls-and-balance","name":"Propulsion, controls and balance","description":"Captures the installation and control relationships needed to interpret the V.8 experiment.","layers":[{"id":"powerplant-installation","name":"Powerplant installation","description":"Distinguishes engine identity and nominal output from installed performance.","findings":[{"id":"engine-installation-evidence","name":"Engine installation evidence","description":"The historical overview reports a water-cooled Mercedes engine rated at 120 hp; the exact subtype and rating basis need verification. [Fokker historical overview](https://www.fokker-history.com/en-gb/v-8)","questions":[{"text":"Which primary record identifies the installed Mercedes subtype and the basis of its power rating?","id":"engine-installation-evidence-q01","kind":"provenance"},{"text":"What propeller, cooling and fuel-installation details are documented specifically for the V.8?","id":"engine-installation-evidence-q02","kind":"definition"}]}]},{"id":"control-and-trim","name":"Control and trim","description":"Maps movable surfaces and loading to roll, pitch and yaw authority.","findings":[{"id":"control-map-and-balance","name":"Control map and balance","description":"Require configuration-specific evidence for surface functions, linkages and centre of gravity.","questions":[{"text":"Which surfaces on each wing group and the tail controlled each axis, and what evidence establishes their linkage?","id":"control-map-and-balance-q01","kind":"definition"},{"text":"What mass, centre-of-gravity position and trim settings are known for each reported trial?","id":"control-map-and-balance-q02","kind":"measurement"}]}]}]},{"id":"trials-and-reconstruction-limits","name":"Trials and reconstruction limits","description":"Separates the reported trial history from demonstrated performance and later interpretations.","layers":[{"id":"trial-sequence","name":"Trial sequence","description":"Links each reported flight or ground event to its evidence and aircraft configuration.","findings":[{"id":"documented-test-events","name":"Documented test events","description":"The historical overview reports two short flights in October 1917 followed by project termination; corroboration and event details remain necessary. [Fokker historical overview](https://www.fokker-history.com/en-gb/v-8)","questions":[{"text":"Which contemporary records establish trial dates, pilot, duration and whether each event was sustained flight or a brief hop?","id":"documented-test-events-q01","kind":"provenance"},{"text":"Which configuration changes can be placed between trial events rather than inferred from undated images?","id":"documented-test-events-q02","kind":"provenance"}]}]},{"id":"interpretation-and-permitted-use","name":"Interpretation and permitted use","description":"Bounds conclusions about failure, capability and reconstruction fidelity.","findings":[{"id":"evidence-bounded-conclusions","name":"Evidence-bounded conclusions","description":"Separate observed behaviour, retrospective explanations and modern engineering estimates.","questions":[{"text":"What evidence supports each proposed reason for abandoning the V.8, and which explanations remain hypotheses?","id":"evidence-bounded-conclusions-q01","kind":"provenance"},{"text":"Which historical claims can an agent accept for a reconstruction, and which require additional drawings, measurements or independent testing?","id":"evidence-bounded-conclusions-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of Fokker V.8 this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of Fokker V.8 this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of Fokker V.8 this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of Fokker V.8 this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of Fokker V.8 this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe the experimental multi-wing layout and what it shows about wartime design experiments.","Support historians in cataloguing records and photographs of it."],"mustNot":["Present speculation about its flight performance as fact.","Confuse it with other experimental types of the same maker.","Misattribute photographs or documents."],"requiresHuman":["Publishing interpretations where sources disagree."]},"ethics":{"considerations":["Accurate history of failed experiments is part of an honest record of engineering."],"affectedParties":["Historians","Readers of aviation history"]},"owners":{"steward":"Nobody owns the design history; archives hold the surviving records.","roles":[],"masterSystems":[]},"relations":[{"target":"Q11436","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.fokker-v-8","Wikidata: Q1989152 (https://www.wikidata.org/wiki/Q1989152)"]},"properties":{"applicability":"required","items":["Design identity: Fokker V.8; registry vr.tr.fokker-v-8","Main-wing grouping: Forward triplane plus rear biplane; configuration-specific evidence","Wing-group geometry: Span, chord, vertical gap and longitudinal separation in m; incidence in degrees; unknown until sourced","Control-surface assignment: Surface location → commanded axis → linkage evidence → configuration","Installed propulsion: Engine identification, cooling arrangement, propeller and installation evidence","Mass and balance: Mass in kg; centre of gravity in m from a declared datum; loading condition required","Trial evidence state: Reported only | independently corroborated | primary-record supported | disputed","Representation relationship: Historical prototype | contemporary depiction | later reconstruction | scale model | unresolved"]},"recognition":{"applicability":"required","items":["Five main wings in two groups: a triplane set forward and a biplane set behind it.","A single nose-mounted engine and a long fuselage to carry both wing groups."]},"capabilities":{"applicability":"required","items":["Assess whether a photograph or drawing plausibly depicts the V.8 using wing grouping, cockpit position and provenance.","Compare proposed V.8 configurations without merging their geometry or control arrangements.","Trace individual specifications to evidence and flag values inherited from other Fokker designs.","Evaluate explanations of trial behaviour against documented configuration and loading information.","Specify the evidence a reconstruction would need before claiming historical fidelity."]},"hazards":{"applicability":"required","items":["Its unusual configuration proved impractical, and claims about its handling rest on thin evidence."]},"interfaces":{"applicability":"not-applicable","items":[]},"context":{"applicability":"required","items":["This experimental aircraft is encountered in aviation history and studies of early multiwing configurations.","Its forward triplane and aft biplane groups provide a case for examining experimental wing arrangements and the limitations of historical flight evidence."]}},"sources":[{"title":"Wikidata item Q1989152: Fokker V.8","url":"https://www.wikidata.org/wiki/Q1989152","note":"identity and sense of the item"},{"title":"Wikipedia: Fokker V.8","url":"https://en.wikipedia.org/wiki/Fokker_V.8","note":"general description of the item"}],"openQuestions":["Which primary drawings, photographs and trial records survive, and which later accounts are independent rather than repetitions of a shared narrative?","What were the exact wing dimensions, incidences, attachment arrangements and configuration changes?","How were the forward and rear control surfaces linked, and did their functions change during testing?","What engine subtype, propeller, mass and centre-of-gravity position applied to each trial?","What do contemporary records establish about flight count, observed handling, termination reasons and the prototype's eventual disposition?"],"resources":{"spec":"/models/things/publications/thing-q1989152/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1989152/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T09:48:14Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"not-applicable","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:28+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.interfaces":"No specific applicable design standard or regulatory classification is established here for this historical experimental aircraft."},"score":1.0}}