Medium Rocket Analysis

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Presentation transcript:

Medium Rocket Analysis Student 1 Student 2 Student 3 Student 4 Mention that we’re doing the medium rocket – this isn’t really emphasized in the other slides.

Data Collection RDAS (Rocket Data Acquisition System) with 8 ADCs Telemetry: 10 Hz, Onboard: 200 Hz Onboard camera with transmitter Strain Gauges IMU: 3 Accelerometers, 3 Rate Gyrometers Pitot tube Thermistors Mention limitations of data acquisition system.

Launch Preparation Configure RDAS Check telemetry and onboard video Prepare recovery system Load rocket motor Install Igniter Launch

Numerical Flight Model: Theory Implicit Euler method

Numerical Flight Model: Results Medium Rocket on G67R Motor

Medium Rocket on G67R Motor Rocksim Simulation Medium Rocket on G67R Motor

Trajectory Analysis: Theory Inertial Measurement Unit: 3 accelerometers 3 rate gyrometers Translation from local to global coordinates through rotation matrix Acceleration integrated twice to get position

Trajectory Analysis: Results G67R motor Z-axis rotation Offset issues Scaling issues

Trajectory Analysis: Summary Motor Time to Apogee Apogee Altitude G67R Numerical Model 9.9 s 410 m Rocksim 8.2 s 288 m IMU 7.1 s 323 m G69N 12.1 s 601 m 9.8 s 416 m 8.5 s 434 m G79W 7.9 s 220 m 8.3 s 298 m 7.0 s 254 m

Vibration Analysis: Theory Rocket modeled as free-free beam E = Young’s modulus Iz = Second moment βnL depends on boundary condition Predicted 98 Hz, 270 Hz, 530 Hz

Vibration Analysis: Results FIX AXIS LABELS IF TIME Natural frequencies: 41±3 Hz, 180±1 Hz, 273±9 Hz

Vibration Analysis: Results 1st mode: 2nd mode:

Pressure and Temperature

Pressure and Temperature

Field Experience Data Acquisition Experimental Design Modeling Converting sensor inputs into real world data Non-ideal sensor performance Experimental Design Modeling

Questions?

Questions?

Questions?