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Boeing CH-47 CH-47 Component and Systems Overview Eaton’s Aerospace Group Product Capabilities

The Boeing Chinook is a Eaton is a recognized leader AS1339, MIL-DTL-25579 and tandem rotor, medium- in the aerospace industry and AS620/AS1227 standards. helicopter that meets tactical is a key supplier of , Other conveyance type and combat support mission fuel, conveyance and actuation products power the T55 engine requirements for products on the CH-47. With on the CH-47, including Eaton’s forces around the globe. this cutting edge technology, carbon main bearing seals and The Chinook is the worlds Eaton provides a broad array gearbox seals. most reliable and efficient of products including the electric for the Utility Eaton also offers helicopter, capable System Hydraulic Accumulator switches and transducers, of handling useful loads up (EPUSHA) system. chip detectors, and an oil to 24,000 lbs. (10,886kg) and filler assembly. a maximum gross weight of Eaton’s contribution to the up to 50,000 lbs. (22,668 kg). EPUSHA system consists of In addition to systems and Its tandem rotor configuration two main components: an components for the CH-47 also provides exceptional electric motor pump (EPUSHA community, Eaton also provides handling qualities that pump) and a control box. These customer service and support enable the CH-47 to operate components, bundled with a worldwide. Eaton is committed in extreme climatic, altitude wiring harness, mounting plate, to servicing, supporting and and crosswind conditions and miscellaneous hardware, enhancing the products supplied that typically keep other are available as a modification to customers and end users. from flying. kit that can be installed to Eaton’s Army contacts in the eliminate the need for hand- Aerospace Group are: The Chinook has been in the pressurizing the hydraulic U.S. Army service since 1962. accumulators required to start The CH-47F and MH-47G a CH-47 Auxillary Power Unit Charlie King modernization programs are (APU). Although this system Tel: 610-522-4089 now in full-rate production is intended to replace a dual- Mobile: 931-494-1083 action, single piston, hand [email protected] and will ensure the Chinook operated , the remains in the Army fleet at hand operated pump remains Jeff Baker least through the 2030s. It is in the circuit as a back-up. The Tel: 616-831-8372 conceivable that Chinooks will EPUSHA system significantly Mobile: 616-446-1889 be Army assets for a reduces the man power and [email protected] century or more. In addition, time needed to start the CH-47. Chinooks have served the armed forces of more than The CH-47’s 3000 psi (20684 15 international customers kPa) hydraulic system incorpo- and performed in commercial rates three driven service around the world. , power transfer units, main engine starters, rescue The CH-47F is an advanced hoist drive motor, cargo multi-mission helicopter drive motor, APU starter/pump for the U.S. Army and and hydraulic accumulator and international defense forces. brake master cylinder assembly. It contains a fully integrated, digital cockpit management Eaton also offers an enhanced system, Common Aviation transmission driven pump to improve reliability, readiness, Architecture Cockpit and quality and safety to the CH-47 advanced cargo handling user community. capabilities that complement the ’s mission Eaton provides a variety of performance and handling conveyance products such as characteristics. Aeroquip® self-sealing quick disconnect couplings and various hose assemblies per

2 EATON Aerospace Group C5-26F July 2015 Boeing CH-47 System Components

4 12 5 2 6 3 13 14 10 11 9

14 11 4 1 10 2 17

16

7 15 8

Engine Solutions Motion Control 1. Oil Filler Assembly 15. Cargo Winch Drive Motor 2. Chip Detector 16. External Actuating Cylinder 3. Pressure Switch 1 7. Rescue Hoist Drive Motor 4. Seals 5. Pressure Transducer

Hydraulic Systems 7. Power Assisted Master Cylinder 8. Hydraulic Brake Transfer Valve 9. Electric Pump for Utility System Hydraulic Accumulator (EPUSHA) 10. Transmission Driven Pump 11. Power Transfer Unit (PTU) 12. APU Starter/Pump 13. Hose Assemblies 14. Self-Sealing Quick Disconnect Couplings

EATON Aerospace Group C5-26F July 2015 3 External Cargo Hook Actuating Power Assisted Master Hose Assemblies Self-Sealing Quick Disconnect Cylinder Hydraulic Brake Cylinder Couplings (contact rep for complete 3200 Series P/N 51980 P/N 18050-10 listing) Eaton's 3200 series self-sealing The external cargo hook actuating Eaton’s master brake cylinder Eaton's hose assemblies are quick disconnect couplings cylinder allows, in the case of an helps control braking on the CH-47. utilized extensively throughout are 3000 psi (20684 kPa). This emergency, a means of releasing On either side of the cockpit, four the CH-47 aircraft. The assemblies allows for a quick connect and the cargo or payload attached to identical master brake cylinders can be found in the hydraulic disconnect, positive action with the center cargo hook. The center are mounted in the chin bubble system, the oxygen system, the valves opening simultaneously cargo hook is installed on a beam area and are attached to each of fuel system and lube oil system. with locking action, no fluid suspended under the center the pilot’s pedals. The four wheels Eaton provides 3,000 psi (20684 loss during connection or cabin floor in the center of the of the forward , and kPa) stainless steel braided disconnection, and has no cavity ® helicopter. In emergency mode, two wheels of the aft landing gear, Teflon hose assemblies per to trap air, dirt or moisture. when activated by a cockpit are equipped with self adjusting AS1339, 1500 psig (10342 kPa) switch, the energized release disk brakes. Both forward and rated Teflon® hose assemblies of a 28 VDC solenoid on the aft brakes can be applied and per MIL-DTL-25579, 601/AE701 center hook allows pneumatic brake pressure maintained by fuel hose assemblies per MIL- pressure from a chamber in depressing the pedals.Hydraulic DTL-83797 and the AE502 ballistic the hook actuating cylinder to pressure is supplied by the self-sealing hose assemblies. flow to an auxiliary piston in the utility hydraulic system. The left Eaton's designation of product for cylinder. Motion of this piston side landing gear wheel brakes the hydraulic system is the AE246 raises the cylinder to open the operate independently from the and 666 series hose assemblies. hook. When the solenoid is right side. Pressing either the The suction side of the hydraulic de-energized (after 10 seconds), pilots or co-pilots left pedal to system also uses AE641 the directed pressure is vented depress the left master cylinder convoluted Teflon hose per AS620/ to atmosphere. The remaining will operate the left side wheel AS1227. The extended range fuel pressure in the pressurized brakes. Pressing either right side tanks, standard on the CH-47F, chamber moves the cylinder to pedal to depress the right master uses Nomex Braided convoluted close the hook. cylinder will operate the right side Teflon hose, AE645 type hose, wheel brakes. inside the fuel cell.

Seals Rescue Hoist Drive Motor Hydraulic Brake Transfer Valve Cargo Winch Drive Motor P/Ns 60471, 61006, 74092A, P/N 114913 P/N 00-416570 P/N 25090 79024A, 79024B, 79024C Eaton's cargo winch drive Eaton's rescue hoist drive When either the pilots or Eaton is the source for all carbon motor is a bent-axis is a bent-axis hydraulic co-pilots brake pedals are motor providing bi-directional main bearing seals and gearbox pressed, pressure from the motor providing bi-directional mechanical shaft power to drive seals for the Honeywell T55 engine master brake cylinders goes mechanical shaft power to drive the cargo winch. powering the CH47. the rescue hoist reel. to a transfer valve in the brake lines. This allows independent braking by either pilot. From these transfer valves, pressure is directed through a parking brake valve to the forward and aft wheel brakes.

4 EATON Aerospace Group C5-26F July 2015 Transmission Driven Pump Power Transfer Unit (PTU) Main Engine Starter APU Starter/Pump P/N 3030434-001 P/N 569773 P/N 420078 P/N 961585 Eaton's tranmission driven Eaton's PTU provides hydraulic Eaton's main engine starter Eaton's APU starter/pump pumps provide hydraulic power power between hydraulic is a clutched hydraulic motor functions as a hydraulic motor to the CH-47's primary and systems without the transfer of that rotates the T55 engine to start the APU and then secondary hydraulic systems. system fluid. by utilizing hydraulic power converts to a pump when the provided by the APU starter/ APU maintains sustainable pump. speed. The pump recharges the utility accumulators and powers the main engine starters.

Electric Pump for Utility Chip Detectors Oil Filler Assembly Pressure Switch System Hydraulic P/N A32381, B4079C, B4486A, P/N F900DB, F9701 P/N 211C117-154, -155, -156 Accumulator (EPUSHA) B553A, 1B737, 1B1065, 1B309, Eaton's easy "flip open cap" Eaton's pressure switches K203AG P/N 3032171-001 oil filler assembly filters media are used for main engine and in the cap to prevent oil from APU pump pressure indication/ Eaton’s electric pump for Eaton’s chip detectors provide splashing out of the reservoir. monitoring. utility system hydraulic remote sensing of the presence accumulator (EPUSHA) is a DC of ferro-magnetic wear particles electric motor-powered pump in lube systems of the engines, (motorpump) that is installed as transmissions and auxiliary a primary source for recharging power units. the utility system hydraulic accumulators required to start a CH-47 APU.

Pressure Transducers P/N 41PD49-4, 41SG83-1 Eaton's pressure transducers monitor the oil inlet of the five transmissions on the CH47 and allow them to be displayed in the cockpit.

EATON Aerospace Group C5-26F July 2015 5 Location Cage Codes Fuel and Motion Control Systems Division Bedhamptom, England K4413 Euclid, Ohio 59875 Inglewood, California OCMF7 Irvine, California 86090 Jackson, Mississippi 62983 and 90166 Los Angeles , California 99643, 76050, 09790, and 52906 Titchfield, England K2523, inclusive of U1918 and U9084 Fluid and Electrical Distribution Division Beltsville, Maryland 15284 Bethel, 02750 Coignieres, F0562 Gilching, Germany C2178 Glenolden, 97484, 16780 Grand Rapids, Michigan 17472, 99145, 09790, and 72121 Jackson, Michigan 00624 Redditch, England U2569 Serres-Castet, France FA9C4 Taccoa, Georgia 8W928 Warwick, Rhode Island 77842

6 EATON Aerospace Group C5-26F July 2015 EATON Aerospace Group C5-26F July 2015 7 Eaton Copyright © 2015 Eaton Aerospace Group All Rights Reserved 9650 Jeronimo Road Teflon® is a registered trademark of DuPont. Irvine, California 92618 Copying or Editing is Forbidden Phone: (949) 452-9500 Form No. C5-26F Fax: (949) 452-9555 July 2015 www.eaton.com/aerospace