Module catalog 

An offline motor catalog: motor metadata, thrust curves, and each curve’s provenance and license.

Catalog::bundled is the catalog compiled into the crate: 32 curve files that ThrustCurve.org marks public domain (the decision record on solid motors and the bundled catalog, ADR-005; how they were chosen, and the curves left out, are in docs/research/thrustcurve-data.md). Other curves are fetched and cached by hpr-net, the online layer that starts at M5.1.

Every figure in the bundled index comes from its curve file alone, written by cargo xtask motor-catalog (issue #295: ThrustCurve.org states no terms for its API’s motor records, so none of their figures is copied). Size, masses and delays are the file header’s; total impulse, average and peak thrust and burn time are worked out from the curve by ThrustCurve’s own methods, the ones the simulator flies (the trapezoid integral and the NFPA 1125 burn window; their definitions and sources are on crate::curve). Only the names that identify a motor (ThrustCurve.org’s id for it, designation, maker, single-use or reload, case, propellant) and the file’s provenance (its ThrustCurve.org data-file id, who produced the data, its license and the download date) are written by hand, in the command’s table.

The index keeps the units motor files and catalogs use (mm, g, N·s, N, s), in fields named for them. CatalogMotor::motor converts to SI and takes the envelope (diameter, length and masses) from the index rather than the curve file’s header. In the bundled index the two are the same; another index (from Catalog::from_json) can correct a header that is wrong (Loft lesson L43: one said 75 mm for a 54 mm motor).

Structs

Catalog

A motor catalog.

CatalogCurve

Where a thrust curve came from and under what terms.

CatalogMotor

One motor’s catalog entry, in the units motor files use.

Snapshot

Where and when a catalog’s curve files were downloaded. Each file’s own URL and SHA-256 are on its CatalogCurve.

Enums

CurveFormat

A thrust-curve file format.

CurveLicense

A curve’s data license, as ThrustCurve records it. ThrustCurve’s API leaves the key out when no license is recorded, which reads as CurveLicense::Unknown.

CurveSource

Who produced a curve (ThrustCurve’s source).

MotorType

Whether a motor is used once or reloaded into a reusable case.

Functions

bundled_curve_text

The text of a bundled curve file, by its path in the bundled index.