Model

Models are physics-based mathematical representations that predict performance.   Models may be computerized.   Some experience examples are listed below.

Electrical Mechanical Transduction

Magnetostrictive-Driver Fuel Injectors

• US Patent 7,255,290: Very high speed rate shaping fuel injector (for diesel engines)
• US Patent 6,298,829: Diesel fuel injector
• US Patent 6,279,842: Natural gas fuel injector

Result: Modeling predicts high compression of terbium alloy and low inductance are key to speed.

Magnetostrictive Transducers: Rugged, Powerful, Versatile Sources

• US Patent 6,012,521: Petroleum reservoir stimulation tool
• US Patent 6,037,973: Movie film pin registration
• Electro-hydraulic flight control actuation (USAF SBIR AF98-175)
• Earthquake-induced building vibration cancellation actuators
• Atmospheric version of underwater acoustic source
• High power hand tool
• Ultrasonic liquid atomization
• Impedance-matching horns

Piezoelectric Transducers

• Keypad impedance matching

Solenoid Transducers

• Sugar shaker / dispenser

Aerospace

5 080 psi Hydraulic Tubing for Boeing 787

• Correlation of AS18280/ARP1185, AS603, and AS4265 fatigue test data, burst test data, and uniaxial tensile strength
• Stress and strain profiles across elliptical wall of tube bend
• Autofrettage effects and compensation
• Tensile properties anisotropy mapping
• Comparison of internal/external strain rosette data to uniaxial properties

Result: Significant weight savings (and therefore fuel savings) through tubing improvement.

Hydraulic System Instrumentation for Boeing 777

• Ensure critical aircraft survival function
• Quantify pressure, temperature, quantity tolerances
• Robust sensing and control software logic

Result: No nuisance messages to flight crew.

Hughes (now Raytheon) AGM-65D Maverick Anti-Tank Missile

• Verify dynamics of safe / arm / fuzing unit match rocket motor thrust profile
• Maximize probability of ordnance detonation