Project in progress
Hybrid Rocket Engine

Hybrid Rocket Engine © GPL3+

This rocket engine was designed with the priority to go to space!!!!

  • 2,491 views
  • 0 comments
  • 11 respects

Components and supplies

Necessary tools and machines

09507 01
Soldering iron (generic)

Apps and online services

About this project

I decided to make this project after we put our resources to space! Without a engine there is no way to get there so we had to make our own. Introducing the Proton! It is a Hybrid Rocket Engine running on Paraffin wax as a fuel and Nitrous as a oxidizer. We designed it so anyone with the dedication and resources to put it together can use it.

Technically it is not a Arduino but the computer that runs the engine is a PCB with the teensy 3.2 board on it so basically, it can use the Arduino environment.

Check out the Delta Space Systems youtube channel, @space_delta twitter, and https://deltaspacesystems.wixsite.com/rockets for more info! Good luck!

A live stream going over the engine and the computer!!!

The series where the rocket will go to space.

The Rocket

The Flight Computer Design

Code

Horizon_Avionics_HDV4_1.0.inoC/C++
//DeltaSpaceSystems2019//


#include "Wire.h" // This library allows you to communicate with I2C devices.
int led = 3;
int relay = 2;
int a;
int ax;
int ay;
int az;
int i;
const int MPU_ADDR = 0x68; // I2C address of the MPU-6050. If AD0 pin is set to HIGH, the I2C address will be 0x69.
int16_t accelerometer_x, accelerometer_y, accelerometer_z; // variables for accelerometer raw data
int16_t gyro_x, gyro_y, gyro_z; // variables for gyro raw data
int16_t temperature; // variables for temperature data
char tmp_str[7]; // temporary variable used in convert function
char* convert_int16_to_str(int16_t i) { // converts int16 to string. Moreover, resulting strings will have the same length in the debug monitor.
  sprintf(tmp_str, "%6d", i);
  return tmp_str;
 
}
void setup() {
  Serial.begin(9600);
  pinMode(relay, OUTPUT);
  digitalWrite(relay, LOW);
   pinMode(led, OUTPUT);
  digitalWrite(led, LOW);
  Wire.begin();
  Wire.beginTransmission(MPU_ADDR); // Begins a transmission to the I2C slave (GY-521 board)
  Wire.write(0x6B); // PWR_MGMT_1 register
  Wire.write(0); // set to zero (wakes up the MPU-6050)
  Wire.endTransmission(true);
}
void loop() {
  Wire.beginTransmission(MPU_ADDR);
  Wire.write(0x3B); // starting with register 0x3B (ACCEL_XOUT_H) [MPU-6000 and MPU-6050 Register Map and Descriptions Revision 4.2, p.40]
  Wire.endTransmission(false); // the parameter indicates that the Arduino will send a restart. As a result, the connection is kept active.
  Wire.requestFrom(MPU_ADDR, 7*2, true); // request a total of 7*2=14 registers
  
  // "Wire.read()<<8 | Wire.read();" means two registers are read and stored in the same variable
  accelerometer_x = Wire.read()<<8 | Wire.read(); // reading registers: 0x3B (ACCEL_XOUT_H) and 0x3C (ACCEL_XOUT_L)
  accelerometer_y = Wire.read()<<8 | Wire.read(); // reading registers: 0x3D (ACCEL_YOUT_H) and 0x3E (ACCEL_YOUT_L)
  accelerometer_z = Wire.read()<<8 | Wire.read(); // reading registers: 0x3F (ACCEL_ZOUT_H) and 0x40 (ACCEL_ZOUT_L)
  temperature = Wire.read()<<8 | Wire.read(); // reading registers: 0x41 (TEMP_OUT_H) and 0x42 (TEMP_OUT_L)
  gyro_x = Wire.read()<<8 | Wire.read(); // reading registers: 0x43 (GYRO_XOUT_H) and 0x44 (GYRO_XOUT_L)
  gyro_y = Wire.read()<<8 | Wire.read(); // reading registers: 0x45 (GYRO_YOUT_H) and 0x46 (GYRO_YOUT_L)
  gyro_z = Wire.read()<<8 | Wire.read(); // reading registers: 0x47 (GYRO_ZOUT_H) and 0x48 (GYRO_ZOUT_L)
  
  // print out data
  Serial.print("aX,"); Serial.print(convert_int16_to_str(accelerometer_x));
  Serial.print(",aY,"); Serial.print(convert_int16_to_str(accelerometer_y));
  Serial.print(",aZ,"); Serial.print(convert_int16_to_str(accelerometer_z));
  // the following equation was taken from the documentation [MPU-6000/MPU-6050 Register Map and Description, p.30]
  Serial.print(",tmp,"); Serial.print(temperature/340.00+36.53);
  Serial.print(",gX,"); Serial.print(convert_int16_to_str(gyro_x));
  Serial.print(",gY,"); Serial.print(convert_int16_to_str(gyro_y));
  Serial.print(",gZ,"); Serial.print(convert_int16_to_str(gyro_z));
ax=accelerometer_x/100;
ay=accelerometer_y/100;
az=accelerometer_z/100;

  a=(sq(ax)+sq(ay));    //gets tilt calc
  Serial.print(",Calculation,"); Serial.print(a);
  Serial.println();

  if (a>8000){    
    digitalWrite(relay, HIGH);
 delay(5000);
 digitalWrite(relay, LOW);}
  Serial.print("Fire Pyro");
    Serial.println();
   

  }

Schematics

Schematic
Screen shot 2019 06 13 at 8 0fggyy6beh

Comments

Similar projects you might like

Advanced Rocket Launch Pad

Project in progress by UniverseRobotics

  • 2,401 views
  • 2 comments
  • 11 respects

Rocket Auto Abort System!

Project in progress by UniverseRobotics

  • 2,111 views
  • 0 comments
  • 11 respects

Strandbeest Rocket Launcher [Fireworks]

Project showcase by Jeremy S. Cook

  • 2,958 views
  • 0 comments
  • 10 respects

Hydrolic Engine with Arduino

Project showcase by iasonopaido

  • 1,077 views
  • 0 comments
  • 0 respects

Automatic Orchestra

Project showcase by Julian Hespenheide

  • 2,150 views
  • 2 comments
  • 25 respects

Mega Solar Tracker

Project in progress by Team Trouble

  • 6,134 views
  • 9 comments
  • 44 respects
Add projectSign up / Login