Helicopter Emergency Equipment and Engines

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 and Related Systems

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

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.