thrustcurve-db

thrustcurve-db

ThrustCurve.org model rocket motor data as a static data structure (plus misc. utility functions).

This module is a rebundling of the rocket motor data available on John Coker's thrustcurve.org website ("TC"). The dataset includes data for all motors in the ThrustCurve API ("search" endpoint). And, where available, thrust samples (samples).

Note: Some motors have multiple thrust sample files. A best-effort is made to pick the most accurate one, but samples data should be treated as possibly out-of-date and/or uncertified.

License & Support

• Please read and understand the ThrustCurve.org license
• This is a snapshot of the TC data. It may be out of date. File an issue here if you think it needs to be updated.
• Issues with how motor data is translated into JSON should be filed as an issue here.
• Issues with incorrect motor data should be directed to the TC site.

Installation

You know the drill ...

npm i thrustcurve-db

Usage

import MOTORS, {parseDelays, unparseDelays} from 'thrustcurve-db';

// `MOTORS` is a Motor[] array.

for (const motor of MOTORS) {
  // See `thrustcurve-db.d.ts` for Motor structure details.
  console.log(motor); // Spew data for ~1,100 motors to console
}

// parseDelays() parses a motor `delays` value to determine the
// delay options. The returned Object has the following properties:
//
//    times: Number[] array of possible delay times (seconds)
//  plugged: true if motor has a "Plugged" configuration
//
// Aerotech delays (S, M, L, X) are transformed as follows:
// S -> 0-6
// M -> 0-10
// L -> 0-14
// X -> 0-18
//
// Note: `times` are guaranteed to be unique and in ascending order.
// E.g.  `parseDelays('L, S')` and `parseDelays('1, 5, M, L')` will
// produce the same result.

parseDelays('S, 16, P'); // -> {
                         //   times: [0,1,2,3,4,5,6,16],
                         //   plugged: true
                         // }

// unparseDelays(parsed) is the inverse operation of parseDelays() (sort of).

unparseDelays({
  times: [0,1,2,3,4,5,6,16],
  plugged: true
}); // -> "0-6,16,P"