profile_synth_naca4 — PROFILE `synth` op

• Data kinds: none → pairs (an op determined by its arguments alone — it takes no image or data input)

• Call: import profileops; profileops.profile_synth_naca4(code='2412', n=161, closed_te=False) (or opsprofile.get("profile_synth_naca4"))

Usage

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

NACA 4 桁翼型を閉形式で生成する。返りは `(N, 2)` の一筆書き。

`code は 4 桁(例 "2412"` = キャンバー 2 %、位置 40 %、厚み 12 %)。

点は前縁を密にするために余弦分布で置く。

`closed_te` は後縁を閉じる係数を使うかどうか。既定は歴史的な係数

(0.1015)で、後縁がわずかに開く。閉じる版は 0.1036。どちらを使ったかで

後縁付近の計測が変わるので、真値として使うなら固定して書き残すこと。

Returns:

`(2*n-1, 2)`。後縁 → 上面 → 前縁 → 下面 → 後縁の順(Selig 流)。

Detailed usage guide

• profile_metrology family guide

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)

• profile_shape_inspection — py -3.11 examples/profile_shape_inspection.py

Ops the type connects to (they accept `pairs` as input)

profile_perturb · profile_chord_frame · profile_normalise · profile_resample · profile_sides · profile_thickness · profile_camber · profile_leading_edge_radius

Same category (`synth`)

profile_perturb

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

profile_synth_naca4 — PROFILE synth op