pub const NARROWER_THAN_NOMINAL_M: [(f64, f64); 3];Expand description
The nominal motor sizes whose cases are narrower than their names, with the largest case
outside diameter, m: AeroTech’s RMS dimensional drawings (RMS-18/20, RMS-24/40, RMS-29/40-120
and HP RMS-29/120, archived from aerotech-rocketry.com in 2005; inches, .XXX to
DRAWING_TOLERANCE_M) give the cases as 0.698, 0.938 and 1.125 in across, so at most 0.703,
0.943 and 1.130 in. Each entry is (nominal size, largest case). ThrustCurve.org and RASP
files carry the nominal size, so a “29 mm” motor is 29 mm in hpr, and an AeroTech RMS-29 case
at most 28.70 mm in the hand; other makers’ cases may differ. The same drawings give 38, 54,
75 and 98 mm cases as 1.500, 2.125, 2.965 and 3.870 in, so at the +0.005 in limit each is at
least as wide as its name, and those sizes get no slack.