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Add unit test for in-line pods

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This commit is contained in:
JoePfeiffer 2023-01-20 11:33:34 -07:00
parent 6a64aa38d4
commit 458e9e3d3d
2 changed files with 110 additions and 1 deletions
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61
core/src/net/sf/openrocket/util/TestRockets.java
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@ -1743,10 +1743,69 @@ public class TestRockets {
return rocket;
}
// Alpha III modified to have an inline pod
public static final Rocket makeEstesAlphaIIIwithInlinePod() {
Rocket rocket = TestRockets.makeEstesAlphaIII();
// Find rocket components to manipulate
final InstanceMap imap = rocket.getSelectedConfiguration().getActiveInstances();
AxialStage stage = null;
BodyTube body = null;
RocketComponent c = null;
for(Map.Entry<RocketComponent, ArrayList<InstanceContext>> entry: imap.entrySet() ) {
c = entry.getKey();
// reference everything to the bottom
c.setAxialMethod(AxialMethod.BOTTOM);
if (c instanceof AxialStage) {
stage = (AxialStage) c;
}
if (c instanceof BodyTube) {
body = (BodyTube) c;
}
}
// disconnect the body from the stage
stage.removeChild(body);
// We need to reference the components hooked to the body to its aft end, not forward
// Make a shorter copy of the body tube and connect it the Stage
// Notice -- total lengths of the short tubes must add up to match the original
BodyTube frontTube = new BodyTube(body.getLength()/2.0, body.getOuterRadius(), body.getThickness());
frontTube.setName("Front Body Tube");
stage.addChild(frontTube);
// Add a PodSet to the front body tube.
PodSet pod = new PodSet();
pod.setInstanceCount(1);
pod.setRadiusMethod(RadiusMethod.COAXIAL);
frontTube.addChild(pod);
pod.setAxialMethod(AxialMethod.TOP);
pod.setAxialOffset(frontTube.getLength());
// Add another even shorter tube to the pod
BodyTube middleTube = new BodyTube(body.getLength()/4.0, body.getOuterRadius(), body.getThickness());
middleTube.setName("Middle Body Tube");
pod.addChild(middleTube);
// Shorten the original body tube, rename it, and put it on the pod
body.setName("Aft body tube");
body.setLength(body.getLength()/4.0);
pod.addChild(body);
return rocket;
}
/**
* dump a test rocket to a file, so we can open it in OR
*/
static void dumpRocket(Rocket rocket, String filename) {
public static void dumpRocket(Rocket rocket, String filename) {
OpenRocketDocument doc = OpenRocketDocumentFactory.createDocumentFromRocket(rocket);
OpenRocketSaver saver = new OpenRocketSaver();

50
core/test/net/sf/openrocket/aerodynamics/BarrowmanCalculatorTest.java
View File

@ -19,6 +19,7 @@ import net.sf.openrocket.rocketcomponent.FinSet;
import net.sf.openrocket.rocketcomponent.FlightConfiguration;
import net.sf.openrocket.rocketcomponent.NoseCone;
import net.sf.openrocket.rocketcomponent.ParallelStage;
import net.sf.openrocket.rocketcomponent.PodSet;
import net.sf.openrocket.rocketcomponent.Rocket;
import net.sf.openrocket.rocketcomponent.Transition;
import net.sf.openrocket.rocketcomponent.TrapezoidFinSet;
@ -442,4 +443,53 @@ public class BarrowmanCalculatorTest {
assertEquals(" Estes Alpha III with multiple empty stages cp y value is incorrect:", cp_calcRef.y, cp_calcMulti.y , EPSILON);
assertEquals(" Estes Alpha III with multiple empty stages cp z value is incorrect:", cp_calcRef.z, cp_calcMulti.z , EPSILON);
}
/**
* Tests in-line pod aerodynamics and warnings
*
*/
@Test
public void testInlinePods() {
WarningSet warnings = new WarningSet();
// reference rocket and results
final Rocket refRocket = TestRockets.makeEstesAlphaIII();
final FlightConfiguration refConfig = refRocket.getSelectedConfiguration();
final FlightConditions refConditions = new FlightConditions(refConfig);
final BarrowmanCalculator refCalc = new BarrowmanCalculator();
double refCP = refCalc.getCP(refConfig, refConditions, warnings).x;
final AerodynamicForces refForces = refCalc.getAerodynamicForces(refConfig, refConditions, warnings);
assertTrue("reference rocket should have no warnings", warnings.isEmpty());
final double refCD = refForces.getCD();
// test rocket
final Rocket testRocket = TestRockets.makeEstesAlphaIIIwithInlinePod();
final PodSet pod = (PodSet) testRocket.getChild(0).getChild(1).getChild(0);
final FlightConfiguration testConfig = testRocket.getSelectedConfiguration();
final FlightConditions testConditions = new FlightConditions(testConfig);
TestRockets.dumpRocket(testRocket, "/home/joseph/rockets/openrocket/git/openrocket/work/testrocket.ork");
final BarrowmanCalculator testCalc = new BarrowmanCalculator();
double testCP = testCalc.getCP(testConfig, testConditions, warnings).x;
final AerodynamicForces testForces = testCalc.getAerodynamicForces(testConfig, testConditions, warnings);
assertTrue("test rocket should have no warnings", warnings.isEmpty());
assertEquals("ref and test rocket CP should match", refCP, testCP, EPSILON);
final double testCD = testForces.getCD();
assertEquals("ref and test rocket CD should match", refCD, testCD, EPSILON);
// move the pod back.
pod.setAxialOffset(pod.getAxialOffset() + 0.1);
testCP = testCalc.getCP(testConfig, testConditions, warnings).x;
assertFalse("should be warning from gap in airframe", warnings.isEmpty());
// move the pod forward.
warnings.clear();
pod.setAxialOffset(pod.getAxialOffset() - 0.2);
testCP = testCalc.getCP(testConfig, testConditions, warnings).x;
assertFalse("should be warning from airframe overlap", warnings.isEmpty());
}
}