AngularAccelerationUnit.java
package org.djunits.unit;
import org.djunits.quantity.Quantity;
import org.djunits.unit.scale.IdentityScale;
import org.djunits.unit.si.SIPrefixes;
import org.djunits.unit.unitsystem.UnitSystem;
/**
* Standard angular acceleration unit. See
* <a href="https://en.wikipedia.org/wiki/Angular_acceleration">https://en.wikipedia.org/wiki/Angular_acceleration</a>.
* <p>
* Copyright (c) 2015-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
* BSD-style license. See <a href="https://djunits.org/docs/license.html">DJUNITS License</a>
* </p>
* @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
*/
public class AngularAccelerationUnit extends Unit<AngularAccelerationUnit>
{
/** */
private static final long serialVersionUID = 20200117L;
/** The base, with "rad/s2" as the SI signature. */
public static final Quantity<AngularAccelerationUnit> BASE = new Quantity<>("AngularAcceleration", "rad/s2");
/** The SI unit for angular velocity is radian per second squared. */
public static final AngularAccelerationUnit SI =
new AngularAccelerationUnit().build(new Unit.Builder<AngularAccelerationUnit>().setQuantity(BASE).setId("rad/s2")
.setName("radians per second squared").setUnitSystem(UnitSystem.SI_DERIVED)
.setSiPrefixes(SIPrefixes.NONE, 1.0).setScale(IdentityScale.SCALE).setAdditionalAbbreviations("rad/sec2"));
/** radian per second squared. */
public static final AngularAccelerationUnit RADIAN_PER_SECOND_SQUARED = SI;
/** degree per second squared. */
public static final AngularAccelerationUnit DEGREE_PER_SECOND_SQUARED =
RADIAN_PER_SECOND_SQUARED.deriveLinear(Math.PI / 180.0, "deg/s2", "degree per second", UnitSystem.SI_ACCEPTED,
"\u00b0/s2", "deg/s2", "dg/s2", "dg/sec2", "deg/sec2");
/** arcminute per second squared. */
public static final AngularAccelerationUnit ARCMINUTE_PER_SECOND_SQUARED = DEGREE_PER_SECOND_SQUARED.deriveLinear(
1.0 / 60.0, "arcmin/s2", "arcminute per second squared", UnitSystem.SI_ACCEPTED, "'/s2", "'/sec2", "arcmin/sec2");
/** arcsecond per second squared. */
public static final AngularAccelerationUnit ARCSECOND_PER_SECOND_SQUARED =
DEGREE_PER_SECOND_SQUARED.deriveLinear(1.0 / 3600.0, "arcsec/s2", "arcsecond per second squared",
UnitSystem.SI_ACCEPTED, "\"/s2", "\"/sec2", new String[] {"arcsec/sec2"});
/** grad per second squared. */
public static final AngularAccelerationUnit GRAD_PER_SECOND_SQUARED = RADIAN_PER_SECOND_SQUARED
.deriveLinear(2.0 * Math.PI / 400.0, "grad/s2", "gradian per second squared", UnitSystem.OTHER);
/** centesimal arcminute per second squared. */
public static final AngularAccelerationUnit CENTESIMAL_ARCMINUTE_SQUARED = GRAD_PER_SECOND_SQUARED.deriveLinear(1.0 / 100.0,
"cdm/s2", "centesimal arcminute per second squared", UnitSystem.OTHER, "c'/s2", "c'/sec2");
/** centesimal arcsecond per second squared. */
public static final AngularAccelerationUnit CENTESIMAL_ARCSECOND_PER_SECOND_SQUARED = GRAD_PER_SECOND_SQUARED.deriveLinear(
1.0 / 10000.0, "cds/s2", "centesimal arcsecond per second squared", UnitSystem.OTHER, "c\"/s2", "c\"/sec2");
}