Resources

Air Data

Applications

Aircraft control surfaces

• Aerodynamic Flutter on Aircraft Control Surfaces: Testing and Measurement AnalysisView PDF

Gimbaled sensors

• How to Reduce Cross Coupling of Airborne Cameras and Other Gimbaled DevicesView PDF
• How to Reduce jitter of Airborne CamerasView PDF
• Critical Balancing of Gimbaled Sensor PlatformsView PDF
• Mass Properties Factors in Achieving Stable Imagery from a Gimbal Mounted CameraView PDF

Golf clubs

• How to Comply With the USGA Ruling on moment of Inertia of Golf Clubheads and Optimize Clubhead DesignView PDF
• Why Use an XR10 to Measure the Moment of Inertia of Golf ClubheadsView PDF

Rocket Motors

• Measuring Weight and All Three Axes of the Center of Gravity of a Rocket Motor Without Having to Reposition the MotorView PDF

Satellites and spacecraft

• Using a Two Plane Spin Balance Instrument to Balance a Satellite Rotor About its Own BearingsView PDF
• How Mass Properties Affect Satellite Attitude ControlView PDF

Turbine Blades

• Hidden Errors in Turbines Blade Moment Measurement and How to Avoid ThemView PDF
• Turbine Blade Measurement – Accuracy TipsView PDF
• A New Moment Balance Machine for Turbine Blade MeasurementView PDF

Igniter Circuit Testing

Mass Properties Instruments

Center of Gravity

• Homemade Center of Gravity InstrumentView PDF
• Center of Gravity DefinitionView PDF

Gas Bearings

• Using a Spherical Air Bearing to Simulate WeightlessnessView PDF

Gimbal Balancing

• Choosing the Right Gimbal Balance MachineView PDF
• Improve Your Sensor Image With BalanceView PDF

Instrument Selection

Moment of Inertia

• How to Find MOI Through CG Without Knowing the CG LocationView PDF
• A New High Accuracy Instrument for Measuring Moment of Inertia and Center of GravityView PDF
• A new High Speed Measurement InstrumentView PDF
• Torsion Pendulum TheoryView PDF
• Principle of Operation of an MOI InstrumentView PDF
• Why Measure Moment of InertiaView PDF

Moment Weight

• Pan Weighing vs Moment WeighingView PDF

Product of Inertia

• Using the “Moment of Inertia Method” to Determine Product of InertiaView PDF
• A New Spin Balance MachineView PDF
• How to Calculate Product of Inertia From Moment of Inertia MeasurementsView PDF

Mass Properties Know-How

Complete Recommended Practice Guides

Glossary

• Definition of Accuracy Terms: Error, Linearly, Hysteresis, Resolution, Sensitivity, Repeatability, Uncertainty, PrecisionView PDF
• Definition of Mass Properties Terms: Mass vs Weight, Center of Gravity, Moment of Inertia, Product of InertiaView PDF

Mass Properties

• The Seven Secrets of Accurate Mass Properties MeasurementView PDF
• Calculating Moment of InertiaView PDF
• Mass Properties Measurement Errors That Could Have Been Easily AvoidedView PDF
• Gravitational Acceleration with Variations and CorrectionsView PDF