1 / 47

PA-28R-201 Systems Andy Philbin

This guide covers the fuel system, propeller system, landing gear, and oxygen systems of the PA-28R-201 aircraft, providing a comprehensive overview of these important components.

jcarpio
Download Presentation

PA-28R-201 Systems Andy Philbin

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PA-28R-201 Systems Andy Philbin

  2. Objectives • Arrow Fuel System • Arrow Propeller System • Arrow Landing Gear • Oxygen Systems and Pressurization • Arrow Preflight

  3. Fuel System Components • Two Fuel Tanks – 72 Usable Gallons 75 Total / 50 to Tabs – Vents – Sumps – Gasket • Fuel Selector – Three Position • Fuel Filter – Gascilator Low Point Sump • Engine Driven Fuel Pump • Boost Pump • Fuel Control Unit / Servo Regulator • Flow Divider • Fuel Flow Gauge • Fuel Injectors

  4. Fuel System Components

  5. Fuel Pumps • Engine Driven – Driven off of the Accesory Case of the Engine / Diaphragm Type Pump • Electric Boost Pump – Electric Driven Vane Type Pump

  6. Fuel Control Unit / Servo Regulator • Fuel Control Unit / Servo Regulator Same Component • Fuel Control Unit Point of Mixture Control – Variable Orifice • Servo Regulator Uses Differiential Pressure to Determine a Fuel Value • Fuel Diaphragm • Air Diaphragm • Ball Valve • Servo Regulator also has Internal Throttle Body – Attached to Throttle (Butterfly Valve)

  7. Servo Regulator • Normal Operations Mixture Control • Idle Mixture Control • Idle Speed Control • Differential Pressure and how it controls fuel value

  8. Flow Divider • Normal Operations • Outlet to Fuel Flow Gauge • Outlet to Servo Regulator • Outlets to the Injectors • Shut Down Operations • Vapor Lock – How the Flow Divider Helps Prevent It

  9. Fuel Injectors • Filter Screen • Principles of CIS • Emulsion Chamber • How this affects the spray pattern

  10. Piper Arrow Propeller System • Propeller Control Lever • Speeder Spring • Pilot Valve • Fly Weights • Governor Pump • Propeller Hub – Piston return Spring • Spinner

  11. Prop Overspeed TO OIL SUMP TO PROPELLER

  12. Prop Underspeed TO OIL SUMP TO PROPELLER

  13. Piper Arrow Gear System • Electro Hydraulic Fully Reversible • Fluid Used – MIL-H-5606 – Red in color • Normal Operations • Hydraulic • Electrical • Emergency Operations • Caution and Warning Systems

  14. Gear Extension

  15. Gear Retraction

  16. Emergency Extension

  17. Gear Extension

  18. Gear Retraction

  19. Arrow Gear Common Questions • Why is Vlr Different then Vle? • What is the purpose of the Snubber Orifice? • What is the purpose of the orifice on the nose wheel? • What does the 020 Diameter Bleed Hole Do? • Why do we have to slow to 87 to manually extend the gear? • How would you trouble shoot gear that failed to extend? Retract? • When does the gear horn go off? • Why doesn’t the nose wheel bind when you move the rudders with the gear retracted? • What turns off the hydraulic pump? Extension? Retraction?

  20. Oxygen Systems and Aircraft Pressurization

  21. Why do we need oxygen systems? • Flight at higher altitudes – favorable winds, better aircraft economy (ram recovery with turbine aircraft) • Regulatory Requirements – 91 and 121 • Emergency Systems – failure of aircraft structure or pressurization systems

  22. Oxygen Regulations Part 91 • 91.211 – 12,500 – 14,000, 14,000, 15,000 • Pressurized Aircraft – Above 25,000 10 min supply for all passengers • Above FL350 One crew member must wear or have a system able to supply O2 while wearing if cabin altitude exceeds 14,000 feet., or if both pilots at controls and both have quick don type masks and below FL410. • If one pilot leaves then the other must put on the mask.

  23. Part 121 Oxygen Requirements • 121.333 – 120 min rule – 10 min descent from cruise and 110 min of cruise at 10,000 • 10 min supply for 10% of the passengers • 15 min supply for cabin attendants wherever they are when the decompression occurs.

  24. Types of Oxygen Systems • Continuous flow – Usable up to FL250 or FL180 with nasal canula. • Dilluter Demand – Good up to FL350 • Pressure Demand – Up to FL410 • Theories of operation

  25. Why do we need pressure demand oxygen systems? • Dalton’s Law – Partial Pressure’s of Oxygen • Law of Gaseous Diffusion and how respiration works • With a low partial pressure of oxygen in the cabin with each breath we take in even breathing 100% oxygen we can rob our bodies of O2 due to a greater pressure differential • Pressure breathing allows higher partial pressure in the lungs and the O2 to pass through the alveolar membrane

  26. Methods of Oxygen Storage • High Pressure Bottles – 1800-1850 PSI • Low Pressure Bottles – 400-450 PSI • LOX • Chemical Oxygen Generators • Oxygen Generating Systems

  27. Oxygen Storage and Usage Safety • Graham’s Law – As temperature increases the pressure increases • Leaving tanks out in the sun the could quickly become empty • Hoses crack after exposure to extremes of temperature • Use of petroleum based products is not recommended due to extremely flammable nature in pure O2 Environment.

  28. Oxygen Preflight Check • S – Supply • C – Connections • R – Regulator • E – Emergency Equipment • A – Adjustments • M - Mask

  29. Types of Pressurization • Isobaric Control • Differential Pressure Control

  30. Pressure Differential Theory • SL 14.7 psi • 4000 12.7 psi • 8000** 10.9 psi • 10,000 10.1 psi • 14,000 8.6 psi • 20,000 6.8 psi • 30,000 4.4 psi • 41,000 2.5 psi 2.5 psi 10.9psi 10.9 Cabin - 2.5 Ambient 8.4 Differential

More Related