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BSI 16/30338730 DC:2016 Edition

BSI 16/30338730 DC:2016 Edition

$13.70

BS ISO 18387. Aerospace. Linear hydraulic utility actuator. General specifications

Published By Publication Date Number of Pages
BSI 2016 52
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PDF Catalog

PDF Pages PDF Title
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
15 4 General requirements
4.1 Order of precedence
4.2 Hydraulic system characteristics
16 4.3 Airworthiness requirements
4.4 Qualification
5 Functional requirements
5.1 General
5.2 Actuator type
5.3 Features incorporated within the actuator
5.4 Hydraulic fluid
5.5 Performance
5.5.1 General
17 5.5.2 Performance cases
18 5.5.3 Leakage
5.5.4 Seal friction
19 5.5.5 Damping (snubbing)
5.5.6 Actuator locking means (if applicable)
20 5.6 Endurance
5.6.1 Duty cycle
21 5.6.2 Endurance test
5.7 Fluid and ambient temperature
5.8 Environmental requirements
22 6 Detail design requirements
6.1 Prevention of incorrect assembly
6.2 Standard parts
6.3 Maintainability features
6.4 Seals
6.4.1 General
6.4.2 Gland surface finishes
6.4.3 Static seals
23 6.4.4 Dynamic seals
6.4.5 Scraper rings (excluders)
6.4.6 Back-up rings
6.4.7 Lead in chamfers
6.5 Lubrication of hydraulic elements
6.6 Orifices
24 6.7 Retainer (snap) rings
6.8 Spring rings
6.9 Fluid porting through interfacing surfaces
6.10 Secondary locking
6.11 Drainage
25 6.12 Drillings
6.13 Fillet radii
6.14 Rod ends
6.15 Bearings
6.15.1 General
26 6.15.2 Lubrication
6.15.3 Anti-roll feature
6.16 Threaded components
6.17 Electro-conductive bonding
6.18 Marking
6.18.1 Nameplate
27 6.18.2 Fluid identification
7 Strength requirements
7.1 General
7.2 Hydraulic
7.2.1 DOP definition
7.2.2 Proof pressure
7.2.3 Ultimate (burst) pressure
7.2.4 Impulse fatigue
28 7.3 Loads
7.3.1 Buckling load
7.3.2 Locking load (if applicable)
7.3.3 Limit load
7.3.4 Ultimate load
7.3.5 Bottoming loads
7.3.6 Bench handling loads
29 7.4 Combined hydraulic pressure and structural loading
7.4.1 Design operating pressure and limit structural load
7.4.2 Proof pressure and ultimate structural load
7.5 Mechanical fatigue
7.6 Port strength
7.7 Vibration
30 8 Construction
8.1 Materials
8.1.1 General
8.1.2 Metals
31 8.2 Corrosion protection
8.2.1 General
8.2.2 Ferrous and copper alloys
8.2.3 Aluminium alloys
8.3 Castings
8.4 Forgings
32 9 Installation requirements
9.1 Space envelope
9.2 Overtravel
9.3 Adjustment
9.4 Dimensions
9.4.1 Retracted length
9.4.2 Extended length
33 9.5 Interface drawing
9.6 Installation drawing
9.7 Mass
9.8 Mounting (Attachment to structure)
9.9 Hydraulic interfaces
34 9.10 Electrical interfaces (if applicable)
10 Instrumented Utility Actuator
11 Maintainability requirements
11.1 General
11.2 Maintenance concept
11.3 Service life limitations and storage specifications
35 12 Reliability requirements
12.1 Requirements
12.2 Equipment compliance
13 Quality assurance provisions
13.1 Responsibility for inspection
13.2 First article inspection (FAI)
13.2.1 General
13.2.2 First article samples
13.2.3 First article inspection report
36 13.2.4 Rejection
13.3 Classification of tests
13.4 Test stand requirements
14 Development tests
37 15 Acceptance tests
15.1 General
15.2 Examination of the Product
15.3 Test Programme and Inspection Methods
15.3.1 General
15.3.2 Run-in
15.3.3 Proof Pressure
15.3.4 Leakage
39 16 Qualification
16.1 Purpose
16.2 Qualification procedure
16.2.1 Qualification programme plan
16.2.2 Qualification test procedure
16.2.3 Similarity and analysis report
16.2.4 Qualification test report
40 16.2.5 Samples and programme of qualification tests
41 16.2.6 Acceptance tests
16.2.7 Dimensional check
16.2.8 Expanded envelope acceptance tests
16.2.9 Performance
44 16.2.10 Endurance test
16.2.11 Structural tests
49 16.2.12 Environmental tests
16.2.13 Post qualification tests
16.2.14 Supplementary tests
50 Bibliography

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