Plane launcher

Plane launcher was designed to throw toy air planes. Originally plane launcher was a flat bed truck that used power function motors to move around.The NXT is used to release the plane. It uses an IR (infrared) remote and receivers to move the motors on the NXT and power functions. The runway is 16 inches from the bottom to the top and 14 inches high.

This is a movie of Plane launcher launching an air plane.

They usually went 10-15 feet.

On occasion it went 10-15 centimeters.

  

This is a view of the back of the truck.

                                         

This is the front of the truck.  

This is a view of the drive motor.

This is Plane launcher packed up for travel.

How it works.

An IR remote and reciver controls the power functions motors.

(The power functions motors control driving and steering)

The same IR remote controls the NXT motor that pulls a pin out and releases the air plane.

(The IR remote has 4 different channels allowing the use of up to 8 different motors at one time)

Steering:

The steering motor spins the bevel gear which moves the worm gear left or right making the wheels turn.

Driving:

The drive motor is connected to a u joint that is conected to a long cross beam connected to another 

u joint, the u joint turns a smaller cross beam that turns the knob gears which turn the bevel gears.

Launching the plane:

Rubber bands are connected to the top of the runway the plane is connected to the rubber bands with a hook. The plane is secured behind a beam that is held in place with a cross beam. When the motor turns it pulls the string holding the pin and the rubber band pulls launches the plane.

Mobile Crane

Mobile Crane is a crane that is mounted onto a trailer.
This crane shares alot of similarities with Remote Control Crane It has the same engine program exept it uses the color sensor to turn the engine on and off, a green ball turns it on, and a red ball turns it off.

It can turn 360 degrees and has stabilizer jacks. 

Motors turn the turn table, lift the boom, raise and lower the gripper and, open and close the gripper

The boom and gripper are raised and lowered with string.

This is a top view of Mobile Crane ready to travel.

This is the gripper.

This is Mobile Crane with the gripper lowered.

How it works:

It makes an engine noise by using the color sensor. It uses two touch sensors and the orange NXT button to turn the crane and raise and lower the boom. If the ornage NXT button is pressed it reverses the direction that the motors turn.

This is a movie of Mobile Crane loading a pack of bullets.