Aad Ppt

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INTRODUCTION The two terms being used in aerospace industry are Power Plant & Engine. Two engine i.e V2500 & JT8D are being overhauled and repaired. Description regarding the method of operation of the engine shop are : Receiving Section Final assembly Sub Assembly (V2500, JT8D) Cleaning Section Non Destructive Testing (NDT) View Room Blade Section Plumbing Section Gearbox Section Bearing & Seals Repairs Standard Room Test Facility Cell

THE MAIN DIFFERENCE BETWEEN V2500 & JT8D ENGINE ARE AS FOLLOWS V2500

JT8D

High by-pass air with the ratio of 5.42:1. 75% of thrust is attained by the

Low by-pass ratio with the ratio of 1:1. 50% of thrust is attained by fan. the fan.

10 HPC stages.

7 HPC stages.

2 stage HPT & 5 stage LPT.

Single stage HPT & 3 stage LPT

Fuel system is electronic hydraulic.

Fuel system is hydro Mechanical.

5 types of bearings are used.

7 types of bearings are used.

20 fuel nozzles are required.

9 fuel nozzles are required.

Thrust produced is 25,000 lbs.

Thrust produced is 16000 lbs.

SUB ASSEMBLY OF V2500 MODULES OF V2500 • The engine modules are: • The fan module • The intercase module • The HPC • The diffuser/combustor module • The HPT • The LPT • The accessory drive gearbox

MAIN ACCESSORY GEARBOX ASSEMBLY EXTERNAL GEARBOX The primary parts of the external gearbox module are:•

MAIN GEARBOX:The main gearbox is installed forward of the angle gearbox & is attached to the angle gearbox by an angle gearbox support & to the intermediate case flange by 3 joint links. The main gearbox has a cast aluminum housing that a gear train, carbon seals & mounting pads for the airframe & engine accessories

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ANGLE GEARBOX:The angle gearbox is installed at the rear of the main gearbox & engages with the power shaft on the engine.The cast aluminium angle gearbox houses a bevel gear set.

VIEW ROOM:Components from the sub-assembly come here for inspection. If any defect or scratch is found on the component than it is sent for repair work. All kinds of defects can be found by scrutinizing the parts visually or with the help of lenses.

PLASMA COATING:Plasma coating use a high intensity electric arc, which heats an inert gas (or relatively inert) or gaseous mixture to an ionized state. This produces expansion of the gas resulting in considerable velocity. Powdered metal is injected into the hot flame, melted and propelled onto the desired surface. Main advantages of plasma are the higher temperature, up to 20,00030,000 deg. F (11,093-16,649 deg), attainable and the inert atmp.

NON-DESTRUCTIVE TESTING (NDT):Non-destructive testing is the technology of assessing the soundness and acceptability of an actual component without affecting the functional properties of the component. Non-destructive testing technique is the technology in general whereas Non-destructive inspection is use of the technology for inspecting materials to known standards. Non-destructive evaluation is the art of developing NDT techniques, arriving at standard for which nothing will be available to start with.

MACHINE SHOP:• • • • • •

In the machine shop we have many machines to perform various operations like :VERTICAL TURRET LATHE DRILLING MACHINE LATHE GRINDING MACHINE MILLING MACHINE WELDING MACHINE

WELDING SHOP Tungsten Inert Gas Welding:Tungsten Inert Gas Welding, also known as GAS TUNGSTEN ARC (GTA) employs inert gas to protect the weld zone from the atmosphere. Heat is supplied by an intensive electric arc, struct between a virtually nonconsumable Tungsten electrode & the work piece Advantages Of Tig Welding:• Highly contracted arc. • Inert gas shielding • No flux or slag • No smoke or fumes • No sparks or spatter

BRAKE ASSEMBLY SHOP The brake is installed on the axle of the left and right hand main landing gear. It position in the assembly will permit the normal or emergency supply system to be connected to either of the self-sealing coupling of the hydraulic crown. WHEEL ASSEMBLY The wheel is made up of a body and a flange assembled together with bolts, washer and nuts and preformed packing ensures sealing efficiency between the wheel body and flange. It is possible to install balance weight (red point on the tire indicated the lightest area) on the wheel body and the flange to achieve the correct balancing.

ESCAPE

SLIDE

Escape slide are used, like raft, in case of emergency like fire etc on ground only i.e. when the aircraft has landed. There are four doors and two emergency doors in case of Boeing 737 aircraft where as four doors and four emergency doors on A-320 aircraft. On each door there is one escape slide. The emergency door are called emergency window. Each slide can carry 4555 of passengers.

CAPTAIN SEAT •

SEAT BACK REST

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ARM REST ASSIST ARM REST

LANDING GEAR •

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The landing gear consist of ;Nose gear:The nose gears shock strut assembly consists of inner and outer cylinder, orifice plate, metering pin, centering cams, bearings, steering cylinder support plates and wheel axels.. Main landing gear:The main gear shock strut assembly consists of inner and outer cylinder containing orifice support tube, metering pin, drain tube, packing, packing adapter, bearing, charging valve, and orifice plate.

PRESENTATION MADE BY:• • • •

ANKUSH GOEL ANSHUL MADAN DAVINDER PAL SINGH SHISHIR PRATAP SINGH