Crate space_units 

space-units

Type-safe units of measure for aerospace quantities.

This crate provides 40 concrete newtypes for physical quantities (Length, Mass, Velocity, Force, Voltage, Temperature, …) where only physically meaningful arithmetic compiles, conversions are explicit, and units are always part of the type.

Quick Start

use space_units::prelude::*;

let distance = 384_400.km();        // Length
let time     = 3.days();            // Time
let velocity = distance / time;      // Length / Time → Velocity

let force = 1000.kg() * 9.81.mps2(); // Mass * Acceleration → Force

Key Features

• 82 typed arithmetic operations — Length / Time → Velocity, Voltage * Current → Power, etc.
• NumericExt literal extensions — 384_400.km(), 51.6.deg(), 28.volts()
• 34 typed constants — constants::GM_EARTH, constants::C, constants::AU, etc.
• Zero dependencies, no_std compatible, const fn constructors

Import prelude for the common case:

use space_units::prelude::*;

Modules

constants

Typed physical and astronomical constants.

prelude

Prelude for space-units.

Structs

AbsorbedDose

An absorbed radiation dose quantity, stored internally in grays (Gy).

Acceleration

An acceleration quantity, stored canonically in meters per second squared (m/s^2).

Angle

A plane angle, stored canonically in radians.

AngularAcceleration

An angular acceleration, stored canonically in rad/s².

AngularMomentum

An angular momentum, stored canonically in newton-metre-seconds (Nms).

AngularVelocity

An angular velocity (rate of rotation), stored canonically in rad/s.

Area

An area quantity, stored canonically in square meters (m²).

Capacitance

A capacitance quantity, stored internally in farads (F).

DataRate

A data rate quantity, stored internally in bits per second (bps).

Density

A density quantity, stored canonically in kilograms per cubic meter (kg/m³).

DisplayWithUnit

A display helper returned by Quantity::display_as(Unit).

DoseEquivalent

A dose equivalent quantity, stored internally in sieverts (Sv).

ElectricCharge

An electric charge quantity, stored internally in coulombs (C).

ElectricCurrent

An electric current quantity, stored internally in amperes (A).

Energy

An energy quantity, stored canonically in joules (J).

Force

A force quantity, stored canonically in Newtons (N).

Frequency

A frequency quantity, stored internally in hertz (Hz).

GravitationalParameter

A gravitational parameter (mu = GM), stored canonically in m³/s².

HeatFlux

A heat flux quantity, stored canonically in watts per square meter (W/m²).

Impulse

An impulse quantity, stored canonically in Newton-seconds (N*s).

Inductance

An inductance quantity, stored internally in henrys (H).

Length

A length / distance quantity, stored canonically in meters (m).

MagneticFlux

A magnetic flux quantity, stored internally in webers (Wb).

MagneticFluxDensity

A magnetic flux density quantity, stored internally in tesla (T).

Mass

A mass quantity, stored canonically in kilograms (kg).

MassFlowRate

A mass flow rate quantity, stored canonically in kilograms per second (kg/s).

MomentOfInertia

A moment of inertia (rotational inertia), stored canonically in kg*m².

Momentum

A momentum quantity, stored canonically in kg*m/s.

Power

A power quantity, stored canonically in watts (W).

Pressure

A pressure quantity, stored canonically in pascals (Pa).

Resistance

An electrical resistance quantity, stored internally in ohms (Ohm).

SolidAngle

A solid angle (two-dimensional angular span), stored canonically in steradians (sr).

SpecificAngularMomentum

A specific angular momentum quantity, stored canonically in m²/s.

SpecificEnergy

A specific energy quantity, stored canonically in J/kg (= m²/s²).

SpecificImpulse

A specific impulse quantity, stored canonically in seconds (s).

Temperature

A temperature quantity, stored canonically in kelvin (K).

Time

A time duration quantity, stored canonically in seconds (s).

Torque

A torque (moment of force), stored canonically in newton-metres (N*m).

Velocity

A velocity quantity, stored canonically in meters per second (m/s).

Voltage

A voltage (electric potential difference) quantity, stored internally in volts (V).

Volume

A volume quantity, stored canonically in cubic meters (m³).

Enums

AbsorbedDoseUnit

Display/conversion units for AbsorbedDose.

AccelerationUnit

Display / conversion units for Acceleration.

AngleUnit

Display and conversion units for Angle.

AngularAccelerationUnit

Display and conversion units for AngularAcceleration.

AngularMomentumUnit

Display and conversion units for AngularMomentum.

AngularVelocityUnit

Display and conversion units for AngularVelocity.

AreaUnit

Display/conversion units for Area.

CapacitanceUnit

Display/conversion units for Capacitance.

DataRateUnit

Display/conversion units for DataRate.

DensityUnit

Display/conversion units for Density.

DoseEquivalentUnit

Display/conversion units for DoseEquivalent.

ElectricChargeUnit

Display/conversion units for ElectricCharge.

ElectricCurrentUnit

Display/conversion units for ElectricCurrent.

EnergyUnit

Display/conversion units for Energy.

ForceUnit

Display / conversion units for Force.

FrequencyUnit

Display/conversion units for Frequency.

GravitationalParameterUnit

Display/conversion units for GravitationalParameter.

HeatFluxUnit

Display/conversion units for HeatFlux.

ImpulseUnit

Display / conversion units for Impulse.

InductanceUnit

Display/conversion units for Inductance.

LengthUnit

Display / conversion units for Length.

MagneticFluxDensityUnit

Display/conversion units for MagneticFluxDensity.

MagneticFluxUnit

Display/conversion units for MagneticFlux.

MassFlowRateUnit

Display/conversion units for MassFlowRate.

MassUnit

Display / conversion units for Mass.

MomentOfInertiaUnit

Display and conversion units for MomentOfInertia.

PowerUnit

Display/conversion units for Power.

PressureUnit

Display/conversion units for Pressure.

ResistanceUnit

Display/conversion units for Resistance.

SolidAngleUnit

Display and conversion units for SolidAngle.

SpecificAngularMomentumUnit

Display/conversion units for SpecificAngularMomentum.

SpecificEnergyUnit

Display/conversion units for SpecificEnergy.

SpecificImpulseUnit

Display/conversion units for SpecificImpulse.

TemperatureUnit

Display/conversion units for Temperature.

TimeUnit

Display / conversion units for Time.

TorqueUnit

Display and conversion units for Torque.

VelocityUnit

Display / conversion units for Velocity.

VoltageUnit

Display/conversion units for Voltage.

VolumeUnit

Display/conversion units for Volume.

Traits

NumericExt

Extension methods on numeric literals for constructing typed quantities.

Functions

max

Returns the larger of two values using PartialOrd.

min

Returns the smaller of two values using PartialOrd.