M2A3 Bradley M2A3 Bradley Fighting Vehicle Fighting Vehicle

ModelModel

LTC Rene’ BurgessLTC Rene’ BurgessFinal Project, MV4204Final Project, MV4204

24 MAR 0324 MAR 03

Briefing & Models available online at Briefing & Models available online at http://fp2k.redshift.com/rayburge3/x3d.htmhttp://fp2k.redshift.com/rayburge3/x3d.htm

Model ProductionModel Production Base M2A3 ModelBase M2A3 Model ImprovementsImprovements

Drive SystemDrive System TrackTrack Road WheelsRoad Wheels Drive SprocketsDrive Sprockets

ArticulationArticulation TurretTurret GunGun TOWTOW Back RampBack Ramp

Appearance ItemsAppearance Items Bolts Bolts HandlesHandles Crew DoorCrew Door TextText

Issues/Lessons LearnedIssues/Lessons Learned

Base ModelBase Model Vertices for most of the Model extracted Vertices for most of the Model extracted

from standard Army M2A3 model in .hps from standard Army M2A3 model in .hps format (…which was extracted from a .flt format (…which was extracted from a .flt format model)format model)

This gave the physical outline of the This gave the physical outline of the outside of the vehicle….and a bitmap outside of the vehicle….and a bitmap texture of a BFV to overlay on the outline.texture of a BFV to overlay on the outline.

Rather than overlay the picture, instead Rather than overlay the picture, instead built a model based on color and physical built a model based on color and physical geometries for better extensibility.geometries for better extensibility.

Drive System Drive System ImprovementsImprovements

TracksTracks Both double/single Both double/single

track sections, then track sections, then rotated/ repeated to rotated/ repeated to complete trackcomplete track

Road WheelsRoad Wheels Built based on photo’s Built based on photo’s

using simple geometries using simple geometries and extrusionsand extrusions

Drive System Improvements Drive System Improvements (Cont.)(Cont.)

Drive SprocketsDrive Sprockets This was hard….tried a This was hard….tried a

couple different methods couple different methods before deciding to use before deciding to use repeating, extended/ repeating, extended/ translated/ rotated translated/ rotated spheres to create drive spheres to create drive sprocket…sprocket…

ArticulationArticulation Turret (Around)Turret (Around) Gun (Up and Gun (Up and

Down)Down) TOW (Up & Down)TOW (Up & Down)

Articulation (Cont)Articulation (Cont) Back RampBack Ramp

(Up and Down)(Up and Down) Easier to use two Easier to use two

TouchSensors than to TouchSensors than to do a JavaScript boolean do a JavaScript boolean (…like double click…)(…like double click…)

Appearance ItemsAppearance Items Skirt HandlesSkirt Handles

BoltsBolts

Appearance Items (Cont)Appearance Items (Cont) Crew DoorCrew Door TextText

Lessons LearnedLessons Learned Texture Mapping Texture Mapping CylinderSensorCylinderSensor JavaScript BooleansJavaScript Booleans ClickSensorClickSensor Model Conversion HiccupsModel Conversion Hiccups Polygons & IndexedFaceSetsPolygons & IndexedFaceSets Need for Visual Modeling/Edit ToolNeed for Visual Modeling/Edit Tool Right Hand, Right Hand, Right Hand….Right Hand, Right Hand, Right Hand…. Internet Explorer v. Netscape during Internet Explorer v. Netscape during

InterpolationInterpolation

ConclusionConclusion Adequate M2A3 Bradley Fighting Adequate M2A3 Bradley Fighting

Vehicle completed / prepared for Vehicle completed / prepared for addition to SAVAGE Libraryaddition to SAVAGE Library

Process of building this model Process of building this model reinforced lessons of X3D designreinforced lessons of X3D design

Posting models on web good way to Posting models on web good way to check functionality/ extensibility on check functionality/ extensibility on other PC’sother PC’s