1. The Aero Club
QUASAR

2. WATER ROCKET

3. Flight of Water Rocket

4. INTRODUCTION
A water rocket is a type of model rocket using water as its reaction mass.

5. It is based on the NEWTONS THIRD LAW OF MOTION.
PRINCIPLE
It is based on the NEWTONS THIRD LAW OF MOTION.

6. WORKING
Prior to launch, the body of the rocket is filled with water to some desired amount, typically about 40% of the volume.
Air is pumped into the bottle rocket to pressurize the bottle and thrust is generated when the water is expelled from the rocket through the nozzle at the bottom.

7. Ideal Rocket Equation

8. Water rocket stability
As the rocket accelerates away from the launch pad, the velocity increases and the aerodynamic forces on the rocket increase.
The wind introduces an additional velocity component perpendicular to the flight path
The addition of this component produces an effective flow direction
Since the effective flow is inclined to the rocket axis, an aerodynamic lift force is generated by the rocket body and fins.

9. During the flight of a model rocket small gusts of wind, or thrust instabilities can cause the rocket to "wobble", or change its altitude in flight.
Whenever the rocket is inclined to the flight path, a lift force is generated by the rocket body and fins

10. The aerodynamic drag remains fairly constant for small inclinations.
Lift and drag both act through the center of pressure cp of the rocket

11. A restoring force exists for the model rocket because the center of pressure is below the center of gravity.
If the center of pressure is above the center of gravity, the lift and drag forces maintain their directions but the direction of the torque generated by the forces is reversed. This is called a de-stabilizing force

12. THANKS COME & GRAB THE OPPORTUNITY…
GET YOURSELF REGISTERED FOR WATER ROCKET WORKSHOP
NOW….
COME & GRAB THE OPPORTUNITY… .