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Schematic

Footprint

The Engine Control Module (ECM) is a control and data acquisition (DAQ) system designed for liquid rocket engine testing. It integrates sensor measurement, actuation control, and data logging into a compact embedded system suitable for ground testing and development.

The system is capable of:

• Monitoring up to 4 pressure transducers
• Reading multiple thermocouples for temperature measurement
• Controlling 1 solenoid valve (on/off flow control)
• Driving 2 servo motors (valve actuation or gimbal control)
• Logging sensor data for analysis and verification

• Data Acquisition

  • 4 analog channels for high-accuracy pressure transducers
  • Integrated thermocouple interface for combustion chamber and feed line monitoring
  • Real-time sampling and logging

• Actuation

  • Solenoid driver with high-side switching capability
  • Dual servo motor outputs (PWM control)
  • Configurable control logic for sequencing and automation

• System Control

  • Embedded microcontroller (e.g., STM32/Arduino/FPGA – specify)
  • USB/UART interface for PC communication
  • Safety interlocks and emergency shutdown support

• Software

  • Firmware for DAQ, control, and communications
  • Logging utility for test data collection
  • Configurable sampling rates and actuation sequences

• Small-scale liquid rocket engine testing
• Valve and feed system automation
• Sensor data acquisition for propulsion research
• Ground support equipment integration

1. Hardware Setup

   • Connect pressure transducers to the analog input ports (0–5 V or 0–10 V).
   • Connect thermocouples to the thermocouple inputs.
   • Wire solenoid to the high-side driver output.
   • Connect servos to PWM headers.

2. Software Setup

   • Flash firmware using the provided source code.
   • Install the DAQ/logging software on your PC.
   • Configure serial port and sampling rate.

3. Operation

   • Power on the ECM.
   • Verify sensor calibration.
   • Execute control sequences via PC interface or onboard logic.

⚠️ This module is intended for research and experimental use only.

• Always follow proper test stand safety procedures.
• Use protective enclosures and remote operation where possible.
• Ensure solenoid and servo actuation logic is validated before hot-fire testing.