MODEL ROCKETRY:
 Model Rocketry Simulator
  Simulation Parameters

 

10.9.8.7.6.5.4.3.2.1 
 

Rocket Information 
Pre-flight mass without engine(grams)
g 
Diameter (millimeters)
mm
Coefficient of friction (0.75 is a good value for Earth, at sea level, and a 'typical' rocket)
Engine Information
Engine
Coast time (delay between end of thrust and ejection charge)

 
Recovery System Information
Recovery system type
Parachute diameter ORStreamer length mm
Streamer width mm
Coefficient of friction (0.75 for flat sheet of plastic, 1.5 for true parachute, for streamers you just have to guess)
Physical Parameters
Acceleration due to gravity at launch (meters/second/second), 9.81 m/s/s for sea level on Earth m/s/s
Radius of planet (6378 km for Earth) km
Density of air (kilograms/cubic meter), 1.2 for Earth atmosphere at sea level kg/m^3
Altitude by analytical solution
Altitude at end of boost
meters 
Maximum altitude
meters 
Required coast time
seconds
Altitude by numerical solution (meters)
Velocity by analytical solution
Maximum velocity
meters/second
Velocity by numerical solution (meters/second)
Acceleration by numerical solution (meters/second/second)

Use with the understanding that this simulation is a guess at what could happen. I assume no warranty or liability, in fact there could be errors in the code and my approximations could be inappropriate. :-( Given that understanding, have fun with this. :-) I enjoyed putting it together and it has many interesting features.