{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:5DX3ZG7UMUYJDFZRD6YG2QTZ4U","short_pith_number":"pith:5DX3ZG7U","canonical_record":{"source":{"id":"2008.09873","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-08-22T16:48:59Z","cross_cats_sorted":["cs.NA","cs.RO","cs.SY","math.NA","physics.ao-ph"],"title_canon_sha256":"a8e100e89ea7216d4b8915a068011cf47cfd945a13273deb9cfeae8c2a3ec88a","abstract_canon_sha256":"51c8ff735d2ecf5d7ce94748a76bce232857be39ee91397abb3f0a29791bcc27"},"schema_version":"1.0"},"canonical_sha256":"e8efbc9bf465309197311fb06d4279e50a744d2badcdf5a7fdd03654b3c29c8d","source":{"kind":"arxiv","id":"2008.09873","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.09873","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"arxiv_version","alias_value":"2008.09873v1","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.09873","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"pith_short_12","alias_value":"5DX3ZG7UMUYJ","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"pith_short_16","alias_value":"5DX3ZG7UMUYJDFZR","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"pith_short_8","alias_value":"5DX3ZG7U","created_at":"2026-07-05T01:29:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:5DX3ZG7UMUYJDFZRD6YG2QTZ4U","target":"record","payload":{"canonical_record":{"source":{"id":"2008.09873","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-08-22T16:48:59Z","cross_cats_sorted":["cs.NA","cs.RO","cs.SY","math.NA","physics.ao-ph"],"title_canon_sha256":"a8e100e89ea7216d4b8915a068011cf47cfd945a13273deb9cfeae8c2a3ec88a","abstract_canon_sha256":"51c8ff735d2ecf5d7ce94748a76bce232857be39ee91397abb3f0a29791bcc27"},"schema_version":"1.0"},"canonical_sha256":"e8efbc9bf465309197311fb06d4279e50a744d2badcdf5a7fdd03654b3c29c8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:29:18.055217Z","signature_b64":"J2SsTNcfIRoWdg9ULWEEfcM3+44PWAnPrPDI4Wm0lSI4ekhqhpTRsh5u6CpVKuGM6snyUMNywlIaAruz1I93AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e8efbc9bf465309197311fb06d4279e50a744d2badcdf5a7fdd03654b3c29c8d","last_reissued_at":"2026-07-05T01:29:18.054827Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:29:18.054827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.09873","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:29:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"saFk2NWwZSOZ4H27wBG80n+Plp5ghWCTq00usrimBs1LliMIe5BKenwVOnj8neMf5lmaOIPKb96ZcMTWGm9bDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T19:38:04.431193Z"},"content_sha256":"e3af44de78ab5d0734b9c851dcf2eb7c52dd712cf453f28c98fac26c7e626328","schema_version":"1.0","event_id":"sha256:e3af44de78ab5d0734b9c851dcf2eb7c52dd712cf453f28c98fac26c7e626328"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:5DX3ZG7UMUYJDFZRD6YG2QTZ4U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Development and Validation of a Comprehensive Helicopter Flight Dynamics Code","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA","cs.RO","cs.SY","math.NA","physics.ao-ph"],"primary_cat":"eess.SY","authors_text":"Bochan Lee, Moble Benedict","submitted_at":"2020-08-22T16:48:59Z","abstract_excerpt":"A comprehensive helicopter flight dynamics code is developed based on the UH-60 helicopter and named Texas A\\&M University Rotorcraft Analysis Code (TRAC). This is a complete software package, which could perform trim analysis to autonomous flight simulation and the capability to model any helicopter configuration. Different components of the helicopter such as the main rotor, tail rotor, fuselage, vertical tail, and horizontal tail are modeled individually as different modules in the code and integrated to develop a complete UH-60 model. Since the code is developed on a module basis, it can b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.09873","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.09873/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:29:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SWcH3eGpNiMchTthOqJ4XowEaw1wYutjFzJomr859HHuLp14792rmNuHdmmH2TdC74nH1Am9etfmXNbyAjDqAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T19:38:04.431722Z"},"content_sha256":"77c66df783447dc24e8c1bba12356248a613dc9444ad64a24d5bf31fa006915e","schema_version":"1.0","event_id":"sha256:77c66df783447dc24e8c1bba12356248a613dc9444ad64a24d5bf31fa006915e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5DX3ZG7UMUYJDFZRD6YG2QTZ4U/bundle.json","state_url":"https://pith.science/pith/5DX3ZG7UMUYJDFZRD6YG2QTZ4U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5DX3ZG7UMUYJDFZRD6YG2QTZ4U/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-23T19:38:04Z","links":{"resolver":"https://pith.science/pith/5DX3ZG7UMUYJDFZRD6YG2QTZ4U","bundle":"https://pith.science/pith/5DX3ZG7UMUYJDFZRD6YG2QTZ4U/bundle.json","state":"https://pith.science/pith/5DX3ZG7UMUYJDFZRD6YG2QTZ4U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5DX3ZG7UMUYJDFZRD6YG2QTZ4U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:5DX3ZG7UMUYJDFZRD6YG2QTZ4U","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"51c8ff735d2ecf5d7ce94748a76bce232857be39ee91397abb3f0a29791bcc27","cross_cats_sorted":["cs.NA","cs.RO","cs.SY","math.NA","physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-08-22T16:48:59Z","title_canon_sha256":"a8e100e89ea7216d4b8915a068011cf47cfd945a13273deb9cfeae8c2a3ec88a"},"schema_version":"1.0","source":{"id":"2008.09873","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.09873","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"arxiv_version","alias_value":"2008.09873v1","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.09873","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"pith_short_12","alias_value":"5DX3ZG7UMUYJ","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"pith_short_16","alias_value":"5DX3ZG7UMUYJDFZR","created_at":"2026-07-05T01:29:18Z"},{"alias_kind":"pith_short_8","alias_value":"5DX3ZG7U","created_at":"2026-07-05T01:29:18Z"}],"graph_snapshots":[{"event_id":"sha256:77c66df783447dc24e8c1bba12356248a613dc9444ad64a24d5bf31fa006915e","target":"graph","created_at":"2026-07-05T01:29:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2008.09873/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A comprehensive helicopter flight dynamics code is developed based on the UH-60 helicopter and named Texas A\\&M University Rotorcraft Analysis Code (TRAC). This is a complete software package, which could perform trim analysis to autonomous flight simulation and the capability to model any helicopter configuration. Different components of the helicopter such as the main rotor, tail rotor, fuselage, vertical tail, and horizontal tail are modeled individually as different modules in the code and integrated to develop a complete UH-60 model. Since the code is developed on a module basis, it can b","authors_text":"Bochan Lee, Moble Benedict","cross_cats":["cs.NA","cs.RO","cs.SY","math.NA","physics.ao-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-08-22T16:48:59Z","title":"Development and Validation of a Comprehensive Helicopter Flight Dynamics Code"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.09873","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e3af44de78ab5d0734b9c851dcf2eb7c52dd712cf453f28c98fac26c7e626328","target":"record","created_at":"2026-07-05T01:29:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"51c8ff735d2ecf5d7ce94748a76bce232857be39ee91397abb3f0a29791bcc27","cross_cats_sorted":["cs.NA","cs.RO","cs.SY","math.NA","physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-08-22T16:48:59Z","title_canon_sha256":"a8e100e89ea7216d4b8915a068011cf47cfd945a13273deb9cfeae8c2a3ec88a"},"schema_version":"1.0","source":{"id":"2008.09873","kind":"arxiv","version":1}},"canonical_sha256":"e8efbc9bf465309197311fb06d4279e50a744d2badcdf5a7fdd03654b3c29c8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e8efbc9bf465309197311fb06d4279e50a744d2badcdf5a7fdd03654b3c29c8d","first_computed_at":"2026-07-05T01:29:18.054827Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:29:18.054827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J2SsTNcfIRoWdg9ULWEEfcM3+44PWAnPrPDI4Wm0lSI4ekhqhpTRsh5u6CpVKuGM6snyUMNywlIaAruz1I93AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:29:18.055217Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.09873","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e3af44de78ab5d0734b9c851dcf2eb7c52dd712cf453f28c98fac26c7e626328","sha256:77c66df783447dc24e8c1bba12356248a613dc9444ad64a24d5bf31fa006915e"],"state_sha256":"38a71a1dc37b18f7ad29301b7e063a1ab9fbfa04651fda160bc9bf2f713a44bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bmhaxfiYtouU4Y7VUGd2jcR3Plum8UvJdsNS7Off/o6CanVa9ORx64q0aerEaIt8ytsWgubp9ojAh5mgiX2lBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T19:38:04.435706Z","bundle_sha256":"557c75a9b61d4cdbcf8715808bac8f4ace2caaf1eeddc03ffd47b130604554c2"}}