2722_588_A.pdf

TP: 2722

(HM&E MANUAL)

TECHNICAL MANUAL

HANGAR, HELICOPTER

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determined on 21 February 2003. Other requests for this document shall be referred to Commander, USCG Surfaces Forces Logistics Center, ESD – Tech Info Mgmt Br, 2401 Hawkins Point Road, Baltimore, MD 21226.

WARNING – This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et seq.) or the Export Administration Act of 1979 (Title 50, U.S.C., App. 2401 et seq.), as amended. Violations of these export laws are subject to severe criminal penalties.

DESTRUCTION NOTICE. - For unclassified, limited documents, destroy by any method that will prevent disclosure of contents or reconstruction of the document.

PUBLISHED UNDER AUTHORITY OF THE U.S. COAST GUARD

SWBS 588

SECTION A

Department of Homeland Security

UNITED STATES

COAST GUARD

Individual Manual Application Sheet

Technical Publications Number

Secton Applicability

SWBS Number 588 SWBS Element Title

AIRCRAFT HANDLING, SERVICING AND

STOWAGE

Section Identifier A

Equipment Functional Description HANGAR, HELICOPTER

CI Functional Description ESWBS Code Remarks

Planset Hulls

901-WMEC 901, 902, 903, 904

Amendment 4

TELESCOPIC ALUMINUM

HELICOPTER HANGAR

MODEL NO. 1230-4

DOOR MODIFICATION

WMEC 270 US COAST GUARD

A-CLASS (HANGAR MODEL 1230-4)

DOOR CONVERSION TO

B-CLASS (HANGAR MODEL 1230-5)

FEDERAL EQUIPMENT COMPANY

CONTRACT DTCG80-97-C-3FA731

CONTRACT JOB NO. 4107

JULY 15, 1997

FOR REPAIR PARTS CONTACT

FEDERAL EQUIPMENT CO.

719 WEST PETE ROSE WAY

CINCINNATI, OH 45203

PHONE: 513-612-5260

TECHNICAL MANUAL

INSTALLATION, OPERATION, MAINTENANCE AND

REPAIR INSTRUCTIONS WITH PARTS LIST

SHIPBOARD TELESCOPIC ALUMINUM

HELICOPTER HANGAR

PART NO. 1230-5

FOR

WMEC 270B CLASS USCG SHIPS

USCGC SPENCER WMEC 905

P.O. NO. 10-0099

CONTRACT NO. DTCG 23-81-C-30026

JANUARY 15,1981

PREPARED FOR

ROBERT E. DERECKTOR OF RHODE ISLAND INC.

MIDDLETOWN, R.I.

DAF INDAL LTD.

1 DEC 1982

*Change No. Page No. *Change No. Page No. *Change No.Page No.

Title A .............................. �O i thru vii 1-0 1-1 thru 1-3 1-4 ....................... Blank 2-1 thru 2-6 3-1 thru 3-53 3-54 ..................... Blank 4-1 thru 4-13 4-14 ..................... Blank 54 thru 5-5 5-6 ........................ Blank 6-1 thru 6-4 7-1 thru 7-106 8-1 thru 8-11 8-12 ..................... Blank

Zero in this column indicates an original page.

A

LIST OF EFFECTIVE PAGES

Insert latest changed pages; dispose of superseded pages in accordance with applicable regulations.

NOTE: On a changed page, the portion of the text affected by the latest change is indicated by a vertical line, or other change symbol, in the outer margin of the page. Changes to illustrations are indicated by miniature pointing hands. Changes to wiring diagrams are indicated by shaded areas.

Total number of pages (including blanks) in this manual is 216 consisting of the following.

0�

CHANGE NO. DATE TITLE OR BRIEF DESCRIPTION ENTERED BY

I i

RECORD OF CHANGES

Page Section DescriptionSection Description Page

GENERAL INFORMATION .............. 1-1

Introduction .................................... 1-1 Purpose of Equipment ....................... 1-1 Equipment Description ...................... 1-1 Fixed Section ................................... 1-1 Trailing (Intermediate) Section ............. 1-1 Lead Section .................................... 1-2 Door Subsection ............................... 1-2 Aft Subsection ................................. 1-2 Travel Limit Switches ........................ 1-2 Interlocks ....................................... 1-2 Hangar Tracks ................................. 1-2 Heating .......................................... 1-3 Ambient Lighting ............................. 1-3 Manual Hoist .................................. 1-3 Hangar Specifications ........................ 1-3

OPERATION .................................. 2-1

Introduction .................................... 2-1 General System Operation .................. 2-1 Description of Controls and Indicators .. 2-1 Operating Procedures ........................ 2-1 Prestart Procedures ........................... 2-1 Start-Up Procedures .......................... 2-1 Hangar Drive Operation ..................... 2-4 Hangar Lighting ............................... 2-5

Hangar Heating ............................... 2-5 Emergency Operations ....................... 2-5 Fire Fighting Procedure ...................... 2-6

FUNCTIONAL DESCRIPTION ......... 3-1

Introduction .................................... 3-1 Identification of Major Components ..... 3-1 Curtain Door System ......................... 3-1 Curtain .......................................... 3-1 Safety Edge Retainer Assembly ............ 3-1 Cable Take-up Reel ........................... 3-4 Sheave Assembly .............................. 3-4 Curtain Deck Dogs ............................ 3-4 Door Guide Assemblies ...................... 3-6 Hood Assembly ................................ 3-6 Barrel Assembly ...................... I......... 3-6 Barrel Drive Shaft ............................. 3-6 Barrel Torsion Shaft .......................... 3-6 Torsion Spring Arrangement ............... 3-6 Ratchet Lock .................................... 3-8 Curtain Drive Arrangement ................. 3-8 Speed Reducer ................................. 3-8

Door Drive Assembly ........................ 3-8 Motor-Brake Assembly ...................... 3-8 Disk Brake ...................................... 3-8

1-3 1-5 1-10 1-13 1-16 1-18 1-24 1-26 1-29 1-31 1-35 1-37 1-39

2-1 2-3 2-6 2-8 2-11 2-13 2-15 2-19 2-21 2-23 2-28

3-1 3-3 3-5 3-7 3-9 3-14 3-17 3-19..

3-22 3-26 3-29 3-31 3-33 3-35 3-37 3-39 3-43 3-46 3-48 3-52

3-58 Torque Control Coupling ................... 3-12 3-61 Reverse-Locking Clutch ..................... 3-13 3-64 Shaft Coupling ................................. 3-13'

3-66 Gear Reducer ................................... 3-15 3-70 Door Drive Shaft .............................. 3-16 3-72 Manual Curtain Drive ........................ 3-16 3-74 Tee Reducer .................................... 3-16 3-77 Disk Brake Release ............................ 3-16 3-81 Hangar Traverse Drive ....................... 3-16 3-83 Traverse Drive System ........................ 3-16 3-85 Traverse Drive Motor ........................ 3-17 3-87 Fluid Drive Coupling ......................... 3-17 3-95 Mitre Gearbox ................................. 3-20 3-97 Horizontal Torsion Shaft .................... 3-21 3-100 Gear Reducers ................................. 3-21 3-103 Vertical Drive Shafts ......................... 3-21 3-106 Traverse Brake Unit .......................... 3-21 3-111 Wheel Assemblies and Guides .............. 3-21 3-115 Hangar Interlock Installation .............. 3-23 3-119 Spring-Controlled Shock .................... 3-23

Absorbers and Striker Spindles 3-122 Lever Assemblies .............................. 3-24 3-124 Pick-Up Bars ................................... 3-28 3-126 Hangar Guides ................................. 3-28 3-128 Interlock Operation ........................... 3-28 3-130 Retraction of Lead and ...................... 3-28

Trailing Sections 3-139 Extension of Lead and ....................... 3-32

Trailing Sections 3-146 Travel Limit Switches ........................ 3-32 3-148 Side Roller Assemblies ....................... 3-34 3-150 Manual Traverse Mechanism ............... 3-34 3-155 Weatherseal Installation ..................... 3-36 3-157 Ambient Lighting System ................... 3-36 3-159 Firefighting System ........................... 3-36 3-163 Space Heating System ........................ 3-36 3-165 Electrical Installation ......................... 3-36 3-188 Electric Circuits ................................ 3-41 3-190 Hangar Traverse and Door ................. 3-43

Drive Supply 3-192 Hangar Traverse Drive Circuit ............. 3-43 3-194 Traverse Drive Power Circuit ............... 3-43 3-197 Traverse Drive Control Circuit ............. 3-43 3-201 Hangar Retraction ............................ 3-43 3-206 Hangar Extension ............................. 3-44 3-208 Curtain Door Drive Circuit ................. 3-44 3-211 Door Drive Power Circuit 3-214 Door Driv e Control Circuit ................. 3-44 3-217 Curtain Opening ............................... 3-44 3-221 Curtain Closing ................................ 3-45 3-224 Curtain Reversal ............................... 3-45 in

TABLE OF CONTENTS

Section Description Page Section Description Page

3-228 Ambient Lighting ............................. 3-45 3-235 Hangar Space Heaters ........................ 3-46

7-1 Introduction .................................... 7-1 7-3 Group Assembly Parts List .................. 7-1 11 Group Assembly Parts List .................. 7-5

8 INSTALLATION ............................. 8-1

8-1 Introduction .................................... 8-1 8-3 Hangar Location .............................. 8-1 8-6 Special Tools ................................... 8-1 8-8 Material Handling ............................ 8-1 8-10 Logistics ......................................... 8-1 8-12 Packaging For Transportation ............. 8-1 8-17 Interface With Ship's Systems .............. 8-2 8-19 Installation Procedures ...................... 8-2 8-22 Preparation of Track ......................... 8-2 8-24 Assembly of Fixed Section .................. 8-2 8-27 Assembly of Trailing Section ............... 8-4 8-30 Assembly of Lead and Door Sections ..... 8-4 8-33 Curtain Installation ........................... 8-5 8-35 Curtain Barrel Assembly .................... 8-5 8-37 Hood Installation ............................. 8-7 8-39 Section Interface .............................. 8-7 8-41 Installation of Interlock System ............ 8-7 8-43 Ship Installations and ........................ 8-7

Electrical Interface 8-45 Deck Sills ................... I ..................... 8-8 8-47 Traverse Limit Switches ..................... 8-8 8-50 Adjustment of Rotary Switches ............ 8-8 8-53 Installation Inspection and .................. 8-10

Pre-Energizing Procedures 8-55 Turn-On and Preliminary Tests ............ 8-10 8-57 Installation Verification Test ............... 8-10

4-1 4-4 4-6 4-10 4-15 4-17 4-19 4-21 4-23 4-25 4-27 4-29

SCHEDULED MAINTENANCE ........ 4-1

General .......................................... 4-1 Servicing Precautions ......................... 4-1 Periodic Inspection Schedule ............... 4-1 Cleaning ......................................... 4-1 Lubrication ..................................... 4-2

First-Time Use ................................. 4-2 Daily Preoperational Check ................ 4-2 W eekly Check .................................. 4-2 Monthly Check ................................ 4-3 Bi-monthly (60 Day) Check ................. 4-3 Semi-Annual Check .......................... 4-5 Annual Maintenance ......................... 4-6

5 TROUBLESHOOTING ..................... 5-1

5-1 Fault Charts .................................... 5-1

6-1 6-3 6-7 6-13 6-15 6-17 6-19

CORRECTIVE MAINTENANCE ....... 6-1

General .......................................... 6-1 Electrical Installation ......................... 6-1 Hangar and Curtain Drive Systems ....... 6-1 Traverse Brake ................................. 6-2 Fluid Drive Coupling ......................... 6-3 Interlocks ....................................... 6-4 W eatherseals ................................... 6-4

7 ILLUSTRATED PARTS ................... 7-1

BREAKDOWN

I General Information ......................... 7-1 iv

TABLE OF CONTENTS

Figure Title Title Page

1-1 Telescopic Hangar, WMEC 270 ........... 1-0

USCG SHIPS

2-1 Locations of Controls ........................ 2-2 and Indicators

2-2 Control Panel, Controls . .................... 2-3 Switches and Indicators

3-1 Curtain Door Arrangement ................. 3-2 3-2 Safety Edge Retainer Assembly ............ 3-3 3-3 Cable Reel Assembly .......................... 3-5 3-4 Cable Sheave Assembly ...................... 3-5 3-5 Hood Assembly ................................ 3-7 3-6 Curtain Barrel Assembly .................... 3-9 3-7 Curtain Drive Arrangement ................. 3-10 3-8 Curtain Drive System ......................... 3-11 3-9 Disk Brake ...................................... 3-12 3-10 Torque Control Coupling ................... 3-13 3-11 Reverse-Locking Clutch ..................... 3-14 3-12 Gear Reducer Diagram ....................... 3-15 3-13 Disk Brake Release Assembly ............. 3-17 3-14 Traverse Drive System ....................... 3-18 3-15 Fluid Drive Coupling ......................... 3-19 3-16 Mitre Gearbox .................................. 3-20 3-17 Wormgear Reducer ........................... 3-22 3-18 Lower Drive Assembly ....................... 3-23 3-19 Traverse Brake Assembly .................... 3-24 3-20 Wheel Assembly and Track Guide ......... 3-25 3-21 View of Hangar Interlock System ......... 3-26 3-22 Hangar Extended; Lead Section ........... 3-29

Begins to Retract 3-23 Lead Section Engages with Trailing ....... 3-30

Section. Both Sections Retract Together

3-24 Trailing Section Retracted and ............. 3-31

- Locked Against Fixed Section

3-25 Lead and Trailing Sections Extending .... 3-33 3-26 Travel Limit Switches ........................ 3-34 3-27 Side Roller Assemblies ....................... 3-34 3-28 Manual Traverse Mechanism ............... 3-35 3-29 Weatherseal Installation ..................... 3-37 3-30 Ambient Lighting ............................. 3-39 3-31 Firefighting System, Schematic ............ 3-40

Diagram 3-32 Limit Switch Box Assembly ................. 3-42 3-33 Hangar Traverse Drive Circuit . ............ 3-47

Schematic Diagram 3-34 Curtain Drive Circuit . ........................ 3-49

Schematic Diagram 3-35 Ambient Lighting Circuit .................... 3-51 3-36 Space Heater Circuit .......................... 3-53

4-1 Lubrication Chart, Hangar Drive ......... 4-7 4-2 Lubrication Chart, Curtain Drive ......... 4-8 4-3 Lubrication Chart, Wormgear Reducer.. 4-9 4-4 Lubrication Chart, Manual ................. 4-10

Traverse Assembly 4-5 Lubrication Chart, Fluid Coupling ........ 4-11 4-6 Interlock, Hangar Traverse ................. 4-12 4-7 angar Wheel Wear Limits ................. 4-13

5-1 Opening the Curtain, Trouble . ............. 5-2 shooting Chart

5-2 Closing the Curtain, Trouble . .............. 5-3 shooting Chart

5-3 Hangar Retraction, Trouble . ............... 5-4 shooting Chart

5-4 Hangar Extension, Trouble . ................ 5-5 shooting Chart

6-1 Rack and Pinion Adjustment ............... 6-2

7-1 Telescopic Aluminum Hangar .............. 7-6 Installation

7-2 Electrical Installation ......................... 7-8 7-3 Spring Driven Cable Lift .................... 7-13

Reel Assembly , 7-4 Combination Starter Assembly ............ 7-16 7-5 Weatherseal Installation ..................... 7-18 7-6 Hangar Firefighting System Assembly... 7-25 7-7 Swivel Joint Assembly ....................... 7-32 7-8 Port and Starboard Hangar ................. 7-33

Interlock Installation 7-9 Door Section Assembly ...................... 7-39 7-10 Hangar Traverse Drive Installation ....... 7-46 7-11 Lower Stbd and Port Drive ................. 7-50

Assemblies 7-12 Manual Drive Assembly ..................... 7-52 7-13 Worrngear Reducer ........................... 7-55 7-14 Mitre Gearbox Assembly .................... 7-58 7-15 Fluid Drive Coupling Assembly ............ 7-60 7-16 Electric Motor ................................. 7-62 7-17 Motorized Hangar Door Drive ............. 7-64

Assembly 7-18 Brake Release Assembly ..................... 7-67 7-19 Electric Disk Brake ........................... 7-68 7-20 Input and Output Coupling ................. 7-70

Torque Controller 7-21 Reverse-Locking Clutch Assembly ........ 7-71 7-22 Limit Switch Assembly ....................... 7-72 7-23 Cycloid Gear Reducer ........................ 7-74 7-24 Curtain Door Assembly ....................... 7-76 7-25 Safety Edge Retainer Assembly ............ 7-78 v

LIST OF FIGURES

Page Figure de

Figure Title Title Page

7-26 7-27 7-28 7-29 7-30 7-31 7-32

Barrel Assembly .......... I..................... 7-80 Right Angle Speed Reducer ................. 7-82 Door Barrel Spring Assembly .............. 7-84 Lead Section Assembly ...................... 7-85 Mechanical Brake Assembly ................ 7-88 Solenoid ......................................... 7-90 Double Wheel Assembly ..................... 7-91

7-33 7-34 7-35 7-36 7-37 7-38 7-39

Side Roller Assembly ......................... 7-92

Trailing Section Assembly ........... ....... 7-93 Fixed Section Assembly ...................... 7-96 2 Ton Capacity Hoist ......................... 7-100 Trolley Assembly .............................. 7-102 Forced Air Heater ............................. 7-103 Hangar Track Assembly ..................... 7-104

Table Title Title Page

1-1 Physical Characteristics ...................... 1-3 1-2 Power Requirements ......................... 1-3

7-1 List of Major Components .................. 7-2 7-2 Vendor Code List ............................. 7-3 vi

LIST OF FIGURES

Page Figure

LIST OF TABLES

Page Table

SAFETY PRECAUTIONS

SHIP'S POWER

1. Thesystemisenergizedfromseparatesourcesofship'selectricalpower:44OV,6OHz,3+and12OV,6OHz, 1+. See Table 1-2. These supplies are not isolated by any of the switches within the hangar system. Therefore, prior to working on any electrical circuit, ensure that the appropriate ship's circuit breakers and isolation switches are open and tagged with warning notices.

MOVING SECTIONS

2. The telescoping hangar presents several hazards.

a. During operation, opening and closing of the hangar curtain door and extending and retracting the moving sections is dangerous to personnel and equipment. Ensure that adequate observers are used during curtain operation and hangar traversing.

b. The covers which enclose equipment are heavy. Ensure that caution is taken when lifting and removing them. When covers are removed, ensure that they are stowed together with the hardware, or anchored, for security.

c. The power cable provides high voltage to the door section. This cable is strapped to the fire fighting arms.

Regular inspection of the cable as it passes across swivel joints in the hangar is mandatory. Check the condition of the cable and also the freedom of movement of the firefighting swivel joints.

HANGAR TRACKS

3. The tracks for the hangar sections include the drive gear racks.

a. Ensure that the track is clean, cleared of foreign objects and salt encrusting. Debris in the track can restrict hangar movement, cause damage to the wheels or can cause helo damage by being ingested by the engines or rotor blades.

b. Ensure that the tracks are washed regularly with high-pressure water to clear foreign matter.

c. Ensure that the tracks are smooth to prevent damage to the wheels.

d. The track flare plates are heavy. Ensure that caution is taken when lifting and removing them. When removed, ensure that they are stowed, or anchored, for security. Do not lay them flat on the deck because of the difficulty in lifting them again. Use support blocks to provide clearance.

HELICOPTER

4. An airborne helicopter will be charged electrostatically. Therefore, contact with any part of the helicopter can cause a discharge path for the static electricity which is dangerous to life. Ensure that the helicopter is discharged by grounding it. The free end of the discharge cable attached to grounding tongs must first be secured to the ship's structure through a conductive metal-to-metal connection. As a safety precaution, grounding should be performed at each landing.

HANGAR TRAVERSING

5. During helo fuelling, the hangar and curtain door must remain stationary with the curtain closed.

vii

Legend 2

1. Curtain door

2. Hood

3. Horizontal traverse drive shaft

4. Ambient lighting fixtures

5. Lighting junction boxes

6. Forward bulkhead 36 37. Interconnect junction box

8. Space heater 35-`

9. Side rollers

10. Firefighting system, swing arm assemb 34----

11. Fixed section

12. Traverse interlock (fixed section)

13. Trailing section 33

14. Traverse interlock

15. Lead section

16. Cable take-up reel (safety edge) 32

17. Pendant control

18. Control panel 31

19. Gear reducer

20. Reverse-locking clutch

21. Motor-Brake

22. Manual curtain drive 16

23. Door section

24. Traverse drive pinion

25. Traverse limit switches

26. Traverse brakes b

27. Traverse wheels 28

28. Manual traverse drive

29. Traverse drive rack 6 1 9

30. Deck track

31. Cable sheave (safety edge) 20

32. Vertical traverse drive 7

33. Traverse drive motor ?_ 1

34. Fluid drive coupling

35. Mitre gearbox 5

36. Gear reducer 4 22

9 10

F1 12 30 29 27 14 13

25 15 18 17

2_6

Figure 1-1 Telescopic Hangar, WMEC 270 USCG SHIPS

1-0

1-1 INTRODUCTION

1-2 This manual provides a description, operating instructions and maintenance procedures for the telescopic hangar, Part No. 1230-5, manufactured by DAF Indal Ltd., 3570 Hawkestone Road, Mississauga, Ontario, Canada. A single configuration of the hangar is described.

1-3 PURPOSE OF EQUIPMENT

1-4 The telescopic hangar is installed on WMEC 270B Class USCG ships. The hangar provides accommoda-tion for a single helicopter together with limited maintenance facilities. Deck space is optimized by the telescoping function. When the hangar is fully extended, it encloses a portion of the flight deck area to provide dual usage of the space. Helicopters housed in such a hangar are protected from salt-laden moisture and salt spray, also from the corrosive fumes and carbon particles emanating from the engine up-take of the ship. These elements are particularly damaging to the bearings, bushings, magnesium ca istings, radio installations and other metallic parts of the helicopter.

They have a damaging effect on plastic bubbles and doors. With the helicopter housed in a heated hangar, long engine warm-up is unnecessary and the aircraft can be flown off without delay after the hangar is retracted.

The efficiency of maintenance personnel is increased considerably when they are working in a hangar with protection against the weather and with adequate heating and lighting.

1-5 EQUIPMENT DESCRIPTION

1-6 The hangar is designed on the operating principle of 'the telescope. The telescoping sections extend and retract along parallel tracks attached to the deck.

1-7 The hangar comprises three sections: A forward fixed section and two moving sections. The moving sections are the aft (lead) door section and the center (trailing) section. Each moving section is dimensioned so that it telescopes within the larger forward adjacent section. The moving sections are supported on phenolic wheels which ride on aluminum tracks fixed to the ship's deck. The tracks extend into the fixed hangar section which is an integral part of the DAF hangar system. When fully retracted, the hangar moving sections are enclosed within the fixed section.

1-8 The primary structure consists of aluminum frames formed into structurally stable arched beams with an aluminum skin welded to it. The primary structure is fabricated from marine-type aluminum alloy extrusions with aluminum plates. The exterior and interior surfaces are finished with vinyl-wash primer for storage protection.

1-9 Each section is manufactured in four parts (ie, four. semi-arches). The pairs of arches are bolted together along the arch center line' Then the two separate arches are bolted together along. the vertical mating faces. All joints are caulked. Weather stripping at the foot of each movable section and also between adjacent sections ensures a watertight seal. The moving sections are of the arched type radiused from side to side.

1-10 Fixed Section

1-11 The fixed section is rectangular in cross section.

The forward face is enclosed by a partial bulkhead; the lower portion is left open for access between the ship and hangar. The spaces on the aft face in the upper corners above the intermediate trailing section are covered and sealed- by gusset plates welded to the fixed section. Two support feet extend aft from the aft face of the fixed section; one on each side. These braces provide additional distribution of loads into the ship's structure.

1-12 The section includes overhead fluorescent lighting fixtures, a piping network which feeds foam to spray nozzles for firefighting, cable terminations to interface with the ship's electrical system and maintenance facilities. It contains a firefighting swing arm assembly which is attached at the forward bulkhead and extends to the forward face of the trailing section.

Swivel joints allow the system to fold when the sections are in motion. This section also includes a hoist which travels athwartship on a beam at the aft end. (Refer to paragraph 1-39.) USCG auxiliary equipment, such as antennas, is placed on top of this section. The starboard side includes a support for a boat davit. Overhead space forward of the hoist has been allocated for helicopter blade storage. Stowage for spare helicopter blades in watertight shipping containers is provided for on top of the hangar.

1-13 Trailing (Intermediate) Section

1-14 This section is positioned between the aft (lead) section and the fixed hangar section. It contains a fire

1-1

CHAPTER 1

GENERAL INFORMATION

fighting swing arm assembly which is attached to the forward end. Swivel joints allow the system to fold when sections are in motion. The system supplies foam to the sprinkler heads.

1-15 In the moving sections, electric cables are secured with clamps to the rigid arms to supply power to the moving sections. A cable take-off in each section runs to a junction box to provide ambient lighting. Fixtures are located on the upper port and starboard walls. Red and white lighting is provided.

1-16 Lead Section

1-17 This section consists of two subsections: The aft arch section and the door section. When the door section is bolted to the aft face of the lead section it becomes an integral part of the lead section.

1-18 Door Subsection

1-19 This subsection is rectangular in cross section. It consists of two semi-arches bolted together through splice plates. The spaces on the forward face in the upper corners above the lead section are covered and sealed by gusset plates welded to the door section structure. A horizontal beam runs across the forward face of the hangar. This beam supports the traverse drive shaft pillow blocks, fairleads which prevent the door curtain from fouling and other miscellaneous parts.

1-20 This subsection includes the hangar traverse drive systems, the curtain door and the door drive systems.

1-21 Hangar traverse is accomplished by means of a motor-driven pinion (one on each wall of the door assembly) which meshes with a continuous linear rack gear attached to the side of the deck-mounted tracks.

The pinions are driven by a single motor through a fluid drive coupling, a mitre gearbox and two reduction gearboxes. The traverse system can be operated electrically or manually. In the powered mode, the motor drive is controlled from a hand-held push-button unit, whereas in the manual mode, the hangar is moved by rotation of a crank handle. The crank handle is inserted into a chain drive mechanism which engages in one of the reduction gearboxes to drive the pinions.

1-22 The hangar door is an overhead, rolling type curtain consisting of a series of horizontal aluminum slats. When the door is opened (ie, curtain raised), the slats are rolled onto a motor-driven barrel. The curtain slides in channel guides on each door jamb. The channel guides are fitted with weather seals.

1-23 The bottom panel incorporates a safety edge which stops the door and reverses it upon contact with any obstacle.

1-24 Aft Subsection

1-25 This subsection contains the port and starboard brake units and the hangar extension and retraction limit switches. The subsection contains a firefighting system which supplies foam to the sprinkler heads. In this section, electric cables are routed through conduit to interconnect the various components. The electric control panel is recessed in the starboard side.

1-26 Travel Limit Switches

1-27 Hangar travel limit switches of the proximity type, located in the lead section, are actuated when the hangar reaches the forward and aft travel limits. These switches are arranged to override the control push-buttons thus preventing any possible damage to the hangar due to overrun.

1-28 Limit and control switches located on the door assembly, provide door travel limit and hangar traverse inhibit logic for the primary electrical circuits. This ensures that the hangar can only be operated electrically when the door curtain is open and when the hangar manual drive is made inoperative.

1-29 Interlocks

1-30 Mechanical interlocks are provided to secure the trailing section to the lead section during traversing, and to the fixed section when the hangar is extended or retracted fully. The interlocks prevent any uncontrolled movement of the trailing section caused by ship motion.

1-31 Hangar Tracks

1-32 The tracks for each moving section consist of aluminum channel extrusions approximately 90 mm (3.5 in.) high mounted on the ship's deck. Phenolic insulation material insulates the tracks from possible galvanic action, and aluminum inserts shim the track pieces for overall levelling. Track mounting plates position the track assembly to conform with the deck lateral profile.

1-33 A linear rack gear extends the length of the drive portion of the track and is fitted to the inside edge of the lead section tracks.

1-34 Continuous water dams welded to the ship's deck along the inboard sides of the tracks, protect against

1-2 will switch from white to red when the hangar door starts to open. Should one supply circuit fail, only half the lighting will operate (alternate fixtures) in either the red or white mode.

1-39 Manual Hoist water ingress. At each end of the track there is a drainage tube which extends from the track extrusion out through the flare plate. Void spaces underneath the tracks and flare plates are filled with preservative (Tectyl 435) to keep out moisture and to prevent corrosion.

1-40 A two-ton hoist is located in the aft end beam of the fixed section.

1-35 Heating

1-36 Two electric space heaters are mounted on the rear face of the upper bulkhead in the fixed section.

These are controlled independently by two fused-disconnect switches. The heater is fitted with an integral contactor, control circuit fuse, and automatic resetting thermal-overload device.

1-37 Ambient Lighting

1-38 Lighting is controlled by a lighting contactor and a lighting circuit breaker assembly. The contactor is fed by two separate supplies to provide emergency back up.

Red or white lighting can be selected manually by operating the selector switch on the contactor panel.

When the selector switch is set to automatic, lighting

CAUTION

The hoist must be removed and the trolley secured with a quick-release pin at the end of its track before retracting the hangar. Failure to do so may cause severe structural damage to the hangar.

The hoist shall only be used when the hangar is in the extended position.

1-41 HANGAR SPECIFICATIONS

Table 1-1 lists the physical characteristics of the telescopic hangar. Table 1-2 lists the power requirements.

DIMENSIONS: Hangar traverse drive:

Control system:

Door drive:

Control system:

Ambient lighting:

Back-up:

Space heaters:

Port:

Stbd:

Utility outlets:

44OV, 6OHz, 3 phase 24V, 6O Hz

44OV, 6OHz, 3 phase 24V, 6OHz

12OV, 6OHz, single phase

12OV, 6OHz, single phase

44OV, 6OHz, 3 phase 44OV, 6OHz, 3 phase

12OV, 6OHz, single phase, three wire

Length - Extended:

- Retracted:

Minimum Width Inside:

(Door Opening)

Maximum Width Outside:

Minimum Height Inside:

� Maximum Height Outside: ...

53 ft 1-1/2 in.

(16,200 mm) 21 ft 7-1/8 in.

(6,580 mm) 19 ft 0 in.

(5,800 mm) 24 ft 0 in.

(7,300 mm) 18 ft 0 in.

(5,500 mm) 20 ft 9 in.

(6,300 mm)

.WEIGHT:

26,647 lb (12,110 kg) 3,454 lb (1,570 kg)

H angar:

T rack :

Table 1-1 Physical Characteristics Table 1-2 Power Requirements

1-3/1-4

CHAPTER 2

OPERATION

2-1 INTRODUCTION (a) Prestart procedures.

2-2 This chapter contains information pertinent to personnel responsible for operating the telescopic hangar and its systems. The information includes a brief overview of the general system operation, a description of each operating control and operating procedures.

2-3 GENERAL SYSTEM OPERATION

2-4 The hangar traverse drive system is operated and controlled electrically in normal use, however, a manual drive mechanism is provided for standby emergency operations and for traversing when powered motion is not desirable (eg, during maintenance activity). The traverse brakes are released electrically. For, manual traversing, a lever and retaining pin allows each brake to be held in the disengaged position.

2-5 The hangar door may be operated electrically or manually. In the powered mode of operation, the door is controlled from a push-button station whereas in the manual mode, a crank handle is used to rotate the curtain drive motor.

2-6 DESCRIPTION OF CONTROLS AND

INDICATORS

2-7 The locations of controls and indicators are shown in Figure 2-1. Their functions during normal operation are given in Table 2-1.

2-8 OPERATING PROCEDURES

2-9 During operation, the hangar is normally kept in a position which will expedite maintenance and flight operations of the helicopter. It is assumed therefore, that the hangar is in its extended position when occupied and remains retracted during flight deck operations.

NOTE

To protect the tracks from weather and icing, keep the hangar extended whenever possible.

2-10 The procedures are given in the following sequence:

(b) Start-up procedures.

(c) Hangar drive operation.

(1) Removing helicopter from hangar.

(2) Housing a helicopter in hangar.

(d) Hangar lighting.

(e) Hangar heating.

(f) Emergency procedures.

(1) Manual curtain operation.

(2) Manual hangar traverse.

(g) Firefighting procedures.

2-11 PRESTART PROCEDURES

2-12 Prior to operating the hangar system, ensure that the daily maintenance procedure, chapter 4, has been carried out. At all times during operations, it is essential that the following checks be made:

(a) Do not attempt to move the hangar with only one traverse drive pinion in operation. Diagnose the reason for a drive system failure before continuing operation.

(b) Ensure that the pinion racks and hangar tracks are free of all foreign material. Interruption in the driving cycle could result in serious damage.

(c) When retracting the hangar, if there is any evidence that jamming is occurring, there is a possibility of damage to the drive. Reverse the direction of the hangar traverse drive to extend the hangar to its limit.

Diagnose the fault and rectify it before continuing operation.

2-13 START-UP PROCEDURES

CAUTION

Refer to the safety precautions in the front matter before operating the curtain and hangar.

2-14 Power from the ship's supplies to the hangar systems is interconnected through fused disconnect switches located typically in the fixed section.

2-1

5-

6-

DOOR AND HANGAR

POWER

CURTAIN DOOR

CONTROL STATION

CURTAIN DOOR

MANUAL DRIVE

MANUAL TRAVERSE

DRIVE

SPACE HEATER

CONTROL PANELS

AMBIENT LIGHTING

CONTROL PANEL

BRAKE UNIT

Figure 2-1 Locations of Controls and .Indicators

2-2

HANGAR TRAVERSE

CONTROLPENDANT

Description Function

Connects the 44OV, 6OHz, 3+ supply for the hangar traverse and curtain drive systems.

Energizes the traverse drive system so that the hangar retracts forward.

Energizes the traverse drive system so that the hangar extends aft.

Resets the power contactor if it has tripped.

Lights to indicate that the control circuits for the hangar traverse and curtain door systems are being energized.

Energizes the curtain drive system to raise the curtain door.

Energizes the curtain drive system to lower the curtain door.

Overrides the up and down motion to stop curtain travel.

Resets the power contactor if it has tripped.

This cam lever raises the manual drive mechanism to engage it with the hangar traverse drive gear reducer. It also actuates an interlock switch to disconnect power from the traverse drive motor. A quick release pin secures the drive in the engaged position.

This handcrank operates a gear through a chain drive to rotate the hangar traverse drive shafts. This moves the hangar.

When this cover plate is moved, it exposes the socket for engaging a crank handle. At the same time, the plate operates a microswitch to disconnect the power from the curtain drive motor and to release the disc brake attached to the motor.

The hdndcrank can be used either inside or outside of the hangar. It engages in the curtain drive system so that the curtain can be raised or lowered manually.

These switches connect the ship's power to operate either the port or starboard space heater.

This control connects power to the red and white overhead fluorescent lights.

When this lever is raised, the brake becomes disengaged from the drive track. The quick-release pin holds the lever in the disengaged position.

1. Power Switch

2. RETRACT push-button (momentary)

3. EXTEND push-button (momentary)

4. HANGAR RESET

push-button

5. POWER ON lamp

6. UP push-button

7. DOWN push-button

8. STOP push-button

9. DOOR RESET

push-button

10. Manual drive lever

11. Manual drive handcrank

12. Crank cover plates

13. Manual drive handcrank

14. Heater disconnect switches

15. Lighting control

16. Manual brake release

Figure 2-2 Control Panel, Controls, -Switches and Indicators

2-3

(a) Whenthe44OV,6OHz,3+supplyisconnectedto the hangar and curtain drive systems, the red POWER ON lamp on the door control station lights.

(b) When the 12OV, supplies are connected to the ambient lighting system, the lamps are controlled by curtain operation. When the curtain door is closed, the white lamps light; when the door is not closed, the red lamps light.

(c) The 12OV, 6OHz supply to convenience outlets in the hangar are not controlled within the hangar.

2-15 HANGAR DRIVE OPERATION

2-16 Traverse Drive Controls (Electrical). The push-buttons which operate the traverse drive system are housed in the pendant control unit located on the starboard side of the lead section. This is a small hand-held unit attached to the end of a cable. This provides the operator with some flexibility to view all-round clearance when the hangar is in motion.

(f) Ensure that the manual traverse drive mechanism is disengaged (ie, lowered) and secured in the electrical drive position. This is achieved by releasing the cam handle, then inserting the -quick release pin in the upper hole. (When the manual drive is engaged, an interlock microswitch is actuated to isolate electric power from the hangar drive system.) '

(g) Using the special speed wrench, rotate the deck dogs ccw. Ensure that the cam hooks become unlatched from the pins in the sill and are clear of the sill. Stow the dogging wrench.

NOTE

The curtain must be fully up to release the door-open interlock which inhibits hangar traverse movement.

(h) Ensure that all obstructions have been removed from thevicinity of the curtain. Press the OPEN push-button to raise the curtain. To stop curtain motion, press the STOP push-button. However, for traverse, allow the curtain to open fully and stop automatically.

0) Remove all lashing or tie down materials to free the helicopter. Position the helicopter accurately on the flight deck.

WARNING

Ensure that personnel are stationed appropriately to observe safe hangar movement. Observe the prestart procedures given in paragraph 2-12.

2-17 Removing Helicopter from Hangar. Proceed as follows:

CAUTION

Remove the hoist and secure the trolley before retracting the hangar.

(a) Move the trolley to the starboard end of the beam. Insert the quick-release pin so that the trolley is secured to the end plate.

(b) Disengage the hoist attachment hook from the anchor under the trolley. Remove the hoist and stow it prior to retracting the hangar.

(c) Check the condition of the track, racks and drive pinions to ensure that they are clean and that no foreign matter is adhering to them.

I (d) Check the manual operation of the traverse brakes to ensure freedom of movement. Lift the lever protruding through the front of the cover and check that the rack plate disengages from the rack on the track.

(e) Inspect the fire fighting swing arm connections.

Ensure that they are clear and free from obstruction.

Check that the electrical cables are also clear and undamaged.

(k) Traverse the hangar by pressing the RETRACT push-button on the pendant control.

(in) When the hangar is in its fully retracted position, and the helicopter has been removed, close the hangar door by pressing the DOWN push-button.

(n) When the curtain is closed, use the special wrench to engage the deck dogs under the sill. Stow the dogging wrench.

(p) The helicopter is now uncovered and can be flown off.

(q) Shut down power appropriate to the mission.

2-18 Housing a Helicopter in the Hangar. Proceed as follows:

CAUTION

At all times during the following operations, carry out the prestart procedures in paragraph 2-12.

2-4

. is

(a) Apply power to the systems. Refer to paragraph 2-13.

(b) Repeat steps (c) through (f) paragraph 2-17.

(c) Position the helicopter on the appropriate markings on the flight deck between the hangar tracks.

(d) Using the special speed wrench, rotate the deck dogs ccw. Ensure that the cam hooks become unlatched from the pins in the sill and are clear of the sill. Stow the dogging wrench.

NOTE

The curtain must be fully up to release the door-open interlock which inhibits hangar traverse movement.

NOTE

When the curtain is closed, the white fluorescent .lamps light. As soon as the curtain starts to rise, interlock switches and contactors change the lighting from white to red. This ensures that helicopter pilots are not blinded during landing or take-off at night.

2-21 HANGAR HEATING

2-22 The space heaters are controlled by individual fused-disconnect switches.

(a) Operate the fused-disconnect switch for each heater.

2-23 EMERGENCY OPERATIONS

(e) Press the OPEN push-button to raise the curtain. To stop curtain motion, 'Press the STOP push-button. However, for traverse, allow the curtain to open fully and stop automatically.

WARNING

Ensure that personnel are stationed appropriately to observe safe hangar movement. Observe the prestart procedures given in paragraph 2-12.

(f) Traverse the hangar by pressing the EXTEND push-button on the pendant control.

(g) Position the helicopter appropriately in the hangar. Secure it in accordance with the stowage procedures precribed for the helicopter.

(h) When the hangar is in its fully extended position, close the hangar curtain by pressing the DOWN push-button.

0) When the curtain is closed, use the special wrench to engage the deck dogs under the sill. Stow the dogging wrench.

2-24 When the curtain and hangar are operated manually, limit switches and the door safety edge switch are not effective. Use extreme care to ensure that operations are carried out safely.

2-25 Manual Curtain Operation. To raise the curtain under conditions of power failure, proceed as follows:

(a) Using the special speed wrench, rotate the deck dogs ccw. Ensure that the cam hooks become unlatched from the pins in the sill and are clear of the sill. Stow the dogging wrench.

NOTE

The, curtain can be operated manually from inside and outside of the hangar. At each location, the handcrank socket is concealed behind a pivoting plate. When the plate is moved, it actuates an interlock switch which prevents power from being applied to the curtain drive motor. It also disengages the disk brake attached to the motor.

(b) Move the plate to expose the socket. Install the curtain drive handcrank.

(k) Shut down power appropriate to the mission.

2-19 HANGAR LIGHTING

2-20 Ambient lighting in the hangar is controlled by a control box for red/white manual or automatic lighting;

and a circuit breaker panel. The supplies provide back-up to each other, therefore, both switches should be on.

(c) Rotate the handcrank cw to raise the curtain.

Stow the handcrank.

NOTE

If the hangar is to be traversed, raise the curtain fully.

2-26 To close the curtain, proceed as follows:(a) Operate the two fused-disconnect switches.

2-5

(a) Move the plate to expose the socket. Install the curtain drive handcrank.

(b) Rotate the handcrank ccw to lower the curtain.

(c) When the curtain is closed, use the special wrench to engage the deck dogs under the sill. Stow the dogging wrench.

(d) Rotate the curtain drive handcrank cw to raise the door slightly to apply tension to the curtain slats.

Stow the handcrank.

2-27 Manual Hangar Traverse. To retract or extend the hangar under conditions of power failure, proceed as follows:

the mechanism upwards until the upper gears mesh firmly. See (10) Figure 2-1. -

(f) Insert the quick-release pin in the lower hole.

(g) Insert the handcrank in the socket. Traverse the hangar by rotating the handcrank in the appropriate direction.

(h) When the hangar is retracted, engage the brakes by disengaging the locking bolts to allow the brakes to engage in the rack. Stow the handcrank.

0) Carry out the procedure in paragraph 2-26 to close the curtain.

(a) Carry out the prestart procedures in paragraphs 2-12. 2-28 Fire Fighting Procedure

(b) Repeat steps (a) through (e), paragraph 2-17.

(c) Carry out the procedures in paragraph 2-25 to open the curtain.

(d) Release the port and starboard hangar traverse brakes from the rack by lifting the lever which protrudes through each cover, then slide the horizontal locking bolt to maintain the lever in the up position. This secures the brake in its released position. See (16) Figure 2-1.

NOTE

Total movement of the mechanism between the engaged (manual drive) position and disengaged (electric drive) position is approximately 5/8 inch.

When the mechanism is engaged, an interlock microswitch is actuated to isolate power from the hangar drive circuit and to inhibit electrical operation.

2-29 Sprinklers fitted in all sections are oriented to cover the maximum hangar area with sprayed foam.

(a) The sprinkler system is connected to the ship's supply through rotating swivel joints and pivot arms.

Operation of the system is beyond the scope of this manual.

WARNING

The fire fighting equipment must be purged of foam residue completely immediately following cessation of the emergency.

CAUTION

When the hangar is retracted (forward), the fixed and trailing section sprinklers are completely sealed off by the lead hangar section.

(e) Remove the quick-release pin from the hangar drive mechanism. Rotate the cam lever so that it slides

(b) Drain plugs are located at the lowest point on the swing arm assembly.

2-6

CHAPTER 3

FUNCTIONAL DESCRIPTION

3-7 CURTAIN3-1 INTRODUCTION

3-2 This chapter describes the major components of the hangar system and their interaction. This is followed by the operating theory of all systems, including the control circuits to the level required for operation and servicing of the components. Schematic diagrams for the electrical circuits are contained in Chapter 8. An illustrated parts list appears in Chapter 7.

3-3 IDENTIFICATION OF MAJOR

COMPONENTS

3-4 The systems within the hangar structure are identified in Figure 1-1. They include:

(a) Curtain door system (paragraph 3-5).

(b) Hangar traversing system (paragraph 3-81).

(c) Weatherseal installation (paragraph 3-155).

(d) Ambient lighting system (paragraph 3-157).

(e) Firefighting system (paragraph 3-159).

(f) Space heating system (paragraph 3-163).

(g) Electrical installation (paragraph 3-165).

3-5 CURTAIN DOOR SYSTEM

3-6 The curtain and curtain door drive arrangement, Figure 3-1, comprises the following:

(a) Curtain (with horizontal slats, end locks and roller wind locks).

(b) Safety edge retainer assembly (with cable take-up reel, sheave assembly and curtain deck dogs).

(c) Door guide assemblies.

(d) Hood assembly.

(e) Barrel assembly (with drive shaft, torsion shaft, torsion springs and ratchet lock).

(f) Curtain drive arrangement.

3-8 The curtain, (1) Figure 3-1, consists of a series of 95 slats joined together horizontally. The slats are roll formed from stainless steel in a modified channel cross section. The channel flanges are shaped such that adjacent slats interlock to form a hinge. This provides the flexibility in one direction so that the curtain can coil on to the barrel (2). However� in the other direction, the interlocked slats are rigid to resist wind pressure.

(a) The top slat, No. 1, (3) includes holes along its web for attachment by bolts to a bar welded along the barrel. This secures the upper edge of the door and supports the entire curtain.

(b) Endlocks (4) are riveted to both ends of slats 2, 4, 6, 8 and 10 (5). Each end lock contains a flange which prevents side movement of the slat to which it is attached and the adjacent odd-numbered slats. These slats are the ones which roll onto the barrel and are in contact with it when the curtain is raised. (Lower slats form the second and successive layers.)

(c) The odd-numbered slats, 3 through 93 are identical to slat 1, except that there are no holes.

(d) Roller windlocks (6) are rivetted to both ends of even-numbered slats, 12 through 94 (7). These windlocks also prevent side movement of the slats. In addition, they include a roller (8) which reduces friction when the curtain is raised or lowered to permit operation under wind loading. Under full wind load, the rollers contact a continuous wind lock bar in each vertical guide. This bar, in contact with the sides of the wheels, restrains the curtain and prevents excessive deflection and stresses. Refer to paragraph 3-22.

(e) Slat 95 (9) is part of a safety edge retainer assembly attached to the lower edge of the door. The slat attaches the assembly to slat 94.

(f) An estane block (17) is attached to the center of each slat. This block provides support when the curtain is stored on the barrel.

3-9 SAFETY EDGE RETAINER ASSEMBLY

3-10 This assembly, shown in Figure 3-2, performs three functions:

3-1

Figure 3-1 Curtain Door Arrangement

- 3-2

I i

Legend

1. Web plate

2. Roller endlock

3. Safety…