Project 2 - Implement the Code for controlling the retraction and extension of Airplane’s landing gear

Overview Of Project:-

• By using the Finite State Machine we are going to implement the Airplane Controlling for landing gear Project. 
• Here we are going to write the algorithm for the retraction and extrension Control of airplane landing gear.
• In Project we are using Hydralic pump,Limit switches, Squat switches,Pilot Lever and Lighting Status.
• Mainly in these project we are going to write the algorithm fo landing purpose. So, we need to consider the cases like Gear Down, Checking before take off, Raising Gear, Gear up, Checking Before landing and Lowering of Gear.
• We are getting output by the above cases.

Goals:-

• For Controlling of Driving Value we need to consider the pilots lever status.
• Here we are going to consider two case in the Direction Value Up means Lever Up and when the Direction Value is Down means Lever down.
• Controlling the retraction we are using the Squat switch and for Extension purpose we are using the Hydralic Mechanism.

Key Highlights Of the Project:-

• A direction value controlled to raise or lower the landing gear in this we need to consider 3 cases.

1. From the Checking before landing to Lowering Gear we need to satisifies the Direction Value need to Down.
2.  If the direction value iis up it should want to go Check before take off.
3. From Lowering Gear to Gear down we need to Satisfies the Limit switch want to open. 

Deliverables of the Project:-

• Here we are Considering these Stages to perform this Project:- Gear Down,Checking BeforeTakeoff, Raising Gear,Gear Up, Checking Before Landing, Lowering Gear.

1. Initialize stage the Airplane is in Gear Down stage we need to satisfies to go next stage means Pilot Lever is in Raising and the Squat switch should be open. And in case Pilot Lever is in falling and the Squat switch should be close it need to come in same Stage Gear Down.
2. Second stage Checking Before takeoff to Raising Gear it should satisfies if Pilots lever Up.
3. From Raising Gear we are considering two cases  1) Limit Switch closed and control for landing gear disable it need to go to Gear Up. In Second case when Pillot Lever falling it need to Checking Before Landing stage.
4. Gear Up to Checking before landing stage it need to satisfies if pilot lever falling and control is enabled.
5. From Checking Before Landing to Lowering Gear it need to satisfies the Pilot Lever Down.
6. From Lowering Gear to Gear Down it need to satisfies the limit switch opened conditioin.

Expected Outcomes:-

• In initialized stage the airplane will in Gear Down stage and Light status is in green.
• We need to enter the Lever position and Squat switch status: 0 0
• It will go to Next stage Checking before take off and light status is Green.
• We need to enter the Lever position and Squat switch and Hydraulic Mechanism status: 2 0 0
• It will wait for 3 secs and goes to Next stage Raising Gear and light status is Red and Direction value status is Up.
• We need to enter the Lever position and Limit switch status: 1 2
• It will wait for 2 secs and goes to Next stage Gear Up,Hydraulic Mechanism Disable and light status is off.
• We need to enter the Lever position: 1 
• It will wait for 2 secs and current status is in checking before landing and light status is Red.
• We need to enter the Lever position and Hydraulic Mechanism status: 3 0
• It will be in Lowering gear and light status is Green and Direction value status is Down.
• We need to enter the Lever position and Limit switch: 0 0
• It will be in Checking Before Takeoff & light status is Green, and Current status is Gear down & light status is Green and Hydralic control is enable.
• It Will repeat the above stages.