Helicopter Emergency Equipment and Engines

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Questions and Answers

What type of engines are used in the helicopter?

Radial turboshaft engines

Rear drive turboshaft engines

Front drive turboshaft engines (correct)

Axial turboshaft engines

What is the module that includes the Enhanced Digital Electronic Control Unit (EDECU)?

Hot section module

Power turbine section module

Accessory section module

Cold section module (correct)

Which module consists of three subassemblies, including the gas generator turbine (NG)?

Cold section module

Accessory section module

Hot section module (correct)

Power turbine section module

What is the location of the engine nacelle?

Above the wing, aft of the main transmission Signup and view all the answers

How many modules does the engine divide into?

Four modules Signup and view all the answers

What is the name of the system that detects fires in the engine and APU?

Engine and Auxiliary Power Unit (APU) Fire Detection/Extinguishing System Signup and view all the answers

What is the purpose of the Canopy Jettison System?

To release the canopy in emergency situations Signup and view all the answers

How many first aid kits are part of the emergency equipment on the helicopter?

Two Signup and view all the answers

What type of turbine is present in the power turbine module?

Two stage power turbine Signup and view all the answers

What is the function of the compressor in the engine?

To compress air Signup and view all the answers

What is located on the top of the accessory module?

Accessory gearbox Signup and view all the answers

What is used to heat the swirl vanes, nose splitter, and engine?

Bleed air from the fifth stage Signup and view all the answers

How many axial stages are present in the compressor?

Five axial stages Signup and view all the answers

What is the purpose of the particle separator?

To separate particles Signup and view all the answers

What type of design does the tail rotor of the AH-64E Apache helicopter have?

Semi-rigid Signup and view all the answers

How many blades does the tail rotor of the AH-64E Apache helicopter have?

4 Signup and view all the answers

What type of engines power the AH-64E Apache helicopter?

Turboshaft Signup and view all the answers

How many engines does the AH-64E Apache helicopter have?

2 Signup and view all the answers

What component is used to transmit power from the engines to the main transmission?

All of the above Signup and view all the answers

Where are the nose gearboxes located on the AH-64E Apache helicopter?

On the engines Signup and view all the answers

What component drives the main and tail rotors and accessory gearbox?

Main transmission Signup and view all the answers

What type of clutches are used in the power transmission system of the AH-64E Apache helicopter?

Over-running Signup and view all the answers

What determines the direction of the cursor on the MPD?

Force input in the direction of the desired icon Signup and view all the answers

What is the purpose of the central crosshairs on the MPD?

To select individual icons Signup and view all the answers

What changes when the cursor symbol graphic is used for FCR Zoom or TSD page target reference point creation?

The size of the cursor symbol changes Signup and view all the answers

Which button is used to access the Menu page?

M bezel button Signup and view all the answers

What type of buttons are used to select MPD pages?

A combination of fixed action buttons and variable action buttons Signup and view all the answers

What is displayed over the cursor when selecting an icon on the MPD?

The icon is displayed over the cursor Signup and view all the answers

What is the purpose of the cursor controls on the collective mission grip?

To position the cursor on the MPD Signup and view all the answers

What is the color of the FCR Zoom cursor?

White Signup and view all the answers

What can be accessed via the Menu page?

All aircraft top-level pages Signup and view all the answers

What determines the selection of options on the MPD?

Both the cursor controls and the force input Signup and view all the answers

Study Notes

Emergency Equipment

The helicopter has two first aid kits
Emergency equipment includes: Canopy Jettison System, Stores Jettison System, Portable fire extinguisher, Engine and Auxiliary Power Unit (APU) Fire Detection/Extinguishing System, and Underwater Acoustic Beacon
Aircraft emergency equipment is discussed further in Chapter 9

Engines Introduction

The T700 GE 701D EDECU engines are front drive turboshaft engines of modular construction
Each engine is divided into four modules: cold section, hot section, power turbine section, and accessory section

Cold Section

Includes the main frame, diffuser and mid frame assembly, inlet particle separator, compressor, output shaft assembly, and associated components
The compressor has five axial stages and one centrifugal stage
Variable inlet guide vanes and variable stage 1 and 2 stator vanes are present

Hot Section

Consists of three subassemblies: the gas generator turbine (NG), stage 1 nozzle assembly, and annular combustion liner

Power Turbine Section

Includes a two-stage power turbine (NP) and exhaust frame
Mounted on the power turbine module are the thermocouple harness, torque and overspeed sensor, and NP sensor

Accessory Section

Includes the top-mounted accessory gearbox and Engine fifth stage bleed air used to heat the swirl vanes, nose splitter, and engine components

Aircraft Description and Operation

Aircraft General

The AH-64E Apache helicopter is a twin engine, tandem seat, aerial weapons platform

Engines

The helicopter is powered by two turboshaft engines
Power is supplied to the main transmission through engine-mounted nose gearboxes, shafts, and over-running clutches

Wings

Left and right wings are attached to the center fuselage
Each wing provides two hard points for external stores pylons with hydraulic and electrical quick-disconnects
Wing tip pylons are installed on the outboard portion of each wing for mounting the ATA launchers

Multipurpose Display (MPD)

MPD enters screen save mode if no button presses are received within 5 minutes
MPD can be brought out of screen save mode by selecting any button on either MPD in the crew station

MPD Capabilities

Provides capability for controlling and monitoring of most aircraft systems
Displays video images provided by the MMP
Two MPDs in each crew station

MPD Controls

Independent controls for adjustment of display image quality
Reference designators: T1-T6, L1-L6, R1-R6, and B1-B6
B1 button is always the menu (M) button

MPD Button Functions

Brightness (BRT) Knob: varies the intensity of the display video and/or symbology
Video Enhancement (VID) Knob: optimizes the video for a specific sensor or scene content
FUEL button: provides access to real-time display of sensor video, MPD, PMN, and AAG pages
PERF Button: provides access to performance information and controls
DVR Button: provides access to DVR controls
UTIL Button: provides access to aircraft subsystem utility controls
AAG Button: provides access to AAG controls
INIT Button: provides access to initialization page
Asterisk (*) Button: provides access to Asterisk page

INIT Page

Provides functions that help the crew initiate tasks
Displays common controls: MSN Button, COM Button, ASE Button, and others
MSN Button: used to access shutdown and FARP tasks
COM Button: used to access COM related tasks
ASE Button: provides access to Aircraft Survivability Equipment (radar warning receiver, MRFI, dispensers, etc.)

Cursor Controls

Both crewmembers can select options on the MPD through cursor controls on the collective mission grip and handgrips
Cursor is positioned on the MPD by providing a force input in the direction of the desired icon

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Description

Learn about the emergency equipment and engine systems used in helicopters, including first aid kits, canopy jettison systems, and more. Understand the components and features of turboshaft engines.