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AMCOM MK66 Guidance Module

AMCOM MK66 Guidance Module. EECE – Course Differentials. Compute actual vs. intended course Simulated “actual” course Pre-plotted intended course Real-time differential update. Plotted deviation in course. Deviation. Vertical distance (ft). Original (intended course). Actual Course.

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AMCOM MK66 Guidance Module

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  1. AMCOM MK66 Guidance Module

  2. EECE – Course Differentials • Compute actual vs. intended course • Simulated “actual” course • Pre-plotted intended course • Real-time differential update

  3. Plotted deviation in course Deviation Vertical distance (ft) Original (intended course) Actual Course Forward distance R/L deviation (Y)

  4. Next Week • Continuing research for interfaces • Start on course corrections with forces from canards • Physics modeling with correctional forces

  5. Searching for Servo Motors • Brush Motors: • Airgap diameter: 0.7”- 48” • Peak Torque Range: 2.8 oz in to 6 k lb/ft • Brushless Motors: • Airgap diameter: 0.4”- 48” • Peak Torque Range: 1.5 oz in to 50 k lb/ft

  6. SL-MTI Brush(+less) DC Motor • Brush Motors (for specialized motors) • Have specs. • Brushless Motors (for high performance) • Used in missile fin actuation, and smart bomb • Have specs.

  7. Brushless DC Servo Motors(Dahaher Motion) • Kollmorgen-Inland Motor • Suited for special environments (high alt, exp) • Inside out configuration • Better heat dissipation, lower rotor inertia, faster response • Interior permanent magnet design • Allows for high reliability and low inertia • Highest torque/inertia ratios, high speed capability (20 k to 70 k rpm) • Direct Drive Motors: (looking into) • MTBF 50,000 hrs • Reduce maintenance

  8. Brushless DC Servo Motors(Aspen Motion Technologies) • Standard "Platform" frame sizes Size 10 (1.0" OD) • Getting specs on size 10, have size 13 (1.3” OD) • Power range fractional to 35 HP • Motor speed range up to 100,000 RPM • Motor Voltage range up to 350 Volts DC • Special Criteria: low noise, submersible, explosion proof. • Options Brakes, encoders, gear boxes, custom shaft, custom winding, custom mountings. • Magnet types: Ferrite, SmCo5, bonded Neo (NdFeB), sintered Neo. • Commutation Types: Six step, Sine wave, sensorless

  9. Canard Actuation Forces • Obtained appropriate aerodynamics text on Monday • Determined lift forces produced by each canard at 5 deg angle of attack • Preliminary calculations for moments needed to actuate • Continuing calculations on drag forces due to complexity of supersonic speeds

  10. Guidance Forces • “Guidance force is a lift produced by actuating canard • Depends on the angle of attack and Mach number for supersonic speeds • CL=4α/(M2-1).5 • L=.5ρV2ApCL Torque • M=1.1 L=35lb 5.2 oz in • M=1.5 L=26.5lb 9.3 oz in • M=2 L=30lb 16.9 oz in

  11. Cont… • Visual of angle of attack

  12. Tasks for Next Week • Determine the impulsive force due to aerodynamic effects • Determine drag forces on canards • Calculate cross wind effects • Finalize actuation mechanism • Narrow down list of servo motors to final candidate or two

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