{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:3P2HBQNUISN7SNSUEWAZMCOLIE","short_pith_number":"pith:3P2HBQNU","schema_version":"1.0","canonical_sha256":"dbf470c1b4449bf9365425819609cb410ae70d578c1fbb0e4a41c290f5e7af27","source":{"kind":"arxiv","id":"1503.06507","version":1},"attestation_state":"computed","paper":{"title":"Pitch Perfect: How Fruit Flies Control their Body Pitch Angle","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.QM"],"primary_cat":"physics.bio-ph","authors_text":"Itai Cohen, Luca Canale, Samuel C. Whitehead, Tsevi Beatus","submitted_at":"2015-03-23T01:38:57Z","abstract_excerpt":"Flapping insect flight is a complex and beautiful phenomenon that relies on fast, active control mechanisms to counter aerodynamic instability. To directly investigate how freely-flying D. melanogaster control their body pitch angle against such instability, we perturb them using impulsive mechanical torques and film their corrective maneuvers with high-speed video. Combining experimental observations and numerical simulation, we find that flies correct for pitch deflections of up to 40 degrees in 29 +/- 8 ms by bilaterally modulating their wings' front-most stroke angle in a manner well-descr"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1503.06507","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-03-23T01:38:57Z","cross_cats_sorted":["q-bio.QM"],"title_canon_sha256":"d101d536d5a0e7750cf83472c7992066eb92e4f0cf785aa73f79985b848dce5a","abstract_canon_sha256":"1b9582375fe9c9df56ba072eed5ba5ba76ba76beb8b5d860f8c588debb2f495e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:20:18.379591Z","signature_b64":"smfhGsW+xij0sTGQ/Uuvh5hH8cnNJW4hrldsxLqEWdewbv57+OC9TPc7wNdjZmW+jfdGHutMsbTbI/FK3Z63Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dbf470c1b4449bf9365425819609cb410ae70d578c1fbb0e4a41c290f5e7af27","last_reissued_at":"2026-05-18T02:20:18.378997Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:20:18.378997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Pitch Perfect: How Fruit Flies Control their Body Pitch Angle","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.QM"],"primary_cat":"physics.bio-ph","authors_text":"Itai Cohen, Luca Canale, Samuel C. Whitehead, Tsevi Beatus","submitted_at":"2015-03-23T01:38:57Z","abstract_excerpt":"Flapping insect flight is a complex and beautiful phenomenon that relies on fast, active control mechanisms to counter aerodynamic instability. To directly investigate how freely-flying D. melanogaster control their body pitch angle against such instability, we perturb them using impulsive mechanical torques and film their corrective maneuvers with high-speed video. Combining experimental observations and numerical simulation, we find that flies correct for pitch deflections of up to 40 degrees in 29 +/- 8 ms by bilaterally modulating their wings' front-most stroke angle in a manner well-descr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06507","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1503.06507","created_at":"2026-05-18T02:20:18.379093+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.06507v1","created_at":"2026-05-18T02:20:18.379093+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06507","created_at":"2026-05-18T02:20:18.379093+00:00"},{"alias_kind":"pith_short_12","alias_value":"3P2HBQNUISN7","created_at":"2026-05-18T12:29:02.477457+00:00"},{"alias_kind":"pith_short_16","alias_value":"3P2HBQNUISN7SNSU","created_at":"2026-05-18T12:29:02.477457+00:00"},{"alias_kind":"pith_short_8","alias_value":"3P2HBQNU","created_at":"2026-05-18T12:29:02.477457+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE","json":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE.json","graph_json":"https://pith.science/api/pith-number/3P2HBQNUISN7SNSUEWAZMCOLIE/graph.json","events_json":"https://pith.science/api/pith-number/3P2HBQNUISN7SNSUEWAZMCOLIE/events.json","paper":"https://pith.science/paper/3P2HBQNU"},"agent_actions":{"view_html":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE","download_json":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE.json","view_paper":"https://pith.science/paper/3P2HBQNU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.06507&json=true","fetch_graph":"https://pith.science/api/pith-number/3P2HBQNUISN7SNSUEWAZMCOLIE/graph.json","fetch_events":"https://pith.science/api/pith-number/3P2HBQNUISN7SNSUEWAZMCOLIE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE/action/storage_attestation","attest_author":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE/action/author_attestation","sign_citation":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE/action/citation_signature","submit_replication":"https://pith.science/pith/3P2HBQNUISN7SNSUEWAZMCOLIE/action/replication_record"}},"created_at":"2026-05-18T02:20:18.379093+00:00","updated_at":"2026-05-18T02:20:18.379093+00:00"}