fit_aero — DRIVE ball op

• Data kinds: signal × points × table → table

• Call: import fullseye as fs; fs.ledger.fit_aero(t, p, omega, bp: 'dict', *, iters: 'int' = 15, dt: 'float' = 0.001) -> 'dict' (to call the implementation directly, import ballistics; ballistics.fit_aero(t, p, omega, bp: 'dict', *, iters: 'int' = 15, dt: 'float' = 0.001) -> 'dict'; from the registry, opsdrive.get("fit_aero"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

軌跡から 空力係数も 同定する: (p₀, v₀, C_d, C_L) の 8 パラメータを Gauss–Newton(ω は既知、C_L は定数として当てる)。

抗力は速さの 2 乗、マグヌスは ω × v なので、直線的でない軌跡(スピンあり・十分な長さ)でないと C_L は決まりにくい

(`rms と一緒に cond = ヤコビアンの条件数を返すので、それで判る)。返り値 {"p0", "v0", "cd", "cl", "rms", "cond", "iters"}`。

真値の軌跡(C_L 定数で作った)なら 1e-6 で戻る(門)。

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• (none yet)

Ops the type connects to (they accept table as input)

course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same

Same category (ball)

ball_params · impact_params · flight_vacuum · flight_ode · flight_simulate · flight_state_at · magnus_lift_coefficient · drag_coefficient_sphere


*Provenance: ballistics.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.