Environmental conditions - Vibration and shock of electrotechnical equipment - Part 6: Transportation by propeller aircraft

IEC TR 62131-6:2017(E) reviews the available dynamic data relating to the transportation of electrotechnical equipment. The intent is that from all the available data an environmental description will be generated and compared to that set out in IEC 60721 (all parts).

General Information

Status
Published
Publication Date
19-Sep-2017
Current Stage
PPUB - Publication issued
Start Date
17-Oct-2017
Completion Date
20-Sep-2017
Ref Project

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IEC TR 62131-6:2017 - Environmental conditions - Vibration and shock of electrotechnical equipment - Part 6: Transportation by propeller aircraft
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IEC TR 62131-6 ®
Edition 1.0 2017-09
TECHNICAL
REPORT
colour
inside
Environmental conditions – Vibration and shock of electrotechnical equipment –
Part 6: Transportation by propeller aircraft
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IEC TR 62131-6 ®
Edition 1.0 2017-09
TECHNICAL
REPORT
colour
inside
Environmental conditions – Vibration and shock of electrotechnical equipment –

Part 6: Transportation by propeller aircraft

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.040 ISBN 978-2-8322-4828-7

– 2 – IEC TR 62131-6:2017 © IEC 2017
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Data source and quality . 8
4.1 Vibration survey of four different propeller driven aircraft . 8
4.2 Britten-Norman Islander aircraft flight measurements . 9
4.3 Lockheed C130 flight vibration measurements . 10
4.4 Lockheed C130 landing shock measurements . 12
4.5 Supplementary data . 12
5 Intra data source comparison . 14
5.1 General . 14
5.2 Vibration survey of four propeller driven aircraft . 14
5.3 Britten-Norman Islander aircraft flight measurements . 15
5.4 Lockheed C130 flight vibration measurements . 16
5.5 Lockheed C130 landing shock measurements . 16
6 Inter data source comparison . 16
7 Environmental description . 17
7.1 Physical sources producing mechanical vibrations . 17
7.2 Environmental characteristics and severities . 19
7.3 Derived test severities . 19
8 Comparison with IEC 60721 (all parts) . 20
9 Recommendations . 23
Bibliography . 59

Figure 1 – Instrumentation locations for Britten-Norman Islander aircraft [1] . 24
Figure 2 – Instrumentation locations for BAe Jetstream aircraft [1] . 24
Figure 3 – Instrumentation locations for BAe HS 748 aircraft [1] . 25
Figure 4 – Instrumentation locations for Lockheed C130 Aircraft Islander [1] . 25
Figure 5 – Comparison of relative overall rms severities for different aircrafts [1] . 26
Figure 6 – Comparison of relative overall rms severities for various flight conditions [1] . 27
Figure 7 – Comparison of relative overall rms severities for various locations [1] . 28
Figure 8 – Typical cruise vibration spectrum for Britten-Norman Islander aircraft [1] . 29
Figure 9 – Typical cruise vibration spectrum for BAe Jetstream aircraft [1]. 29
Figure 10 – Typical cruise vibration spectrum for BAe HS 748 aircraft [1] . 30
Figure 11 – Typical cruise vibration spectrum for Lockheed C130 aircraft [1] . 30
Figure 12 – Britten-Norman Islander vibration at cabin during cruise [2] . 31
Figure 13 – Britten-Norman Islander vibration at plane of propeller during take-off [2] . 32
Figure 14 – Britten-Norman Islander vibration at middle of fuselage during take-off [2] . 32
Figure 15 – Britten-Norman Islander vibration at middle of fuselage during cruise [2] . 33
Figure 16 – Britten-Norman Islander vibration at rear of fuselage during cruise [2] . 33
Figure 17 – Comparison of vibration severities for Lockheed C130 – Take-off [3] . 34
Figure 18 – Comparison of vibration severities for Lockheed C130 – Climb [3]. 34

Figure 19 – Comparison of vibration severities for Lockheed C130 – Cruise [3] . 35
Figure 20 – Comparison of vibration severities for Lockheed C130 – Reverse thrust [3] . 35
Figure 21 – Comparison of vibration severities for Lockheed C130 at blade passing
frequency [3] . 36
Figure 22 – Comparison of vibration severities for Lockheed C130 background random
overall rms [3] . 37
Figure 23 – Lockheed C130 vibration at forward fuselage during take-off – Flight 3 [3] . 40
Figure 24 – Lockheed C130 vibration at forward fuselage (Frame 257) during cruise –
Flight 3 [3] . 40
Figure 25 – Lockheed C130 vibration at forward fuselage (Frame 317) during cruise –
Flight 3 [3] . 41
Figure 26 – Lockheed C130 vibration at aft fuselage during cruise – Flight 3 [3] . 41
Figure 27 – Lockheed C130 vibration at forward fuselage during landing – Flight 3 [3] . 42
Figure 28 – Lockheed C130 vibration at forward fuselage during take-off – Flight 4 [3] . 42
Figure 29 – Lockheed C130 vibration at plane of propeller during take-off – Flight 4 [3] . 43
Figure 30 – Lockheed C130 vibration at plane of propeller during climb – Flight 4 [3] . 43
Figure 31 – Lockheed C130 vibration at plane of propeller during cruise – Flight 4 [3] . 44
Figure 32 – Lockheed C130 vibration at plane of propeller during landing – Flight 4 [3] . 44
Figure 33 – Landing shocks from Lockheed C130 vertical [4] . 45
Figure 34 – Landing shocks from Lockheed C130 lateral [4] . 45
Figure 35 – Landing shocks from Lockheed C130 longitudinal [4] . 46
Figure 36 – Transall C160 vibration at fuselage floor during take-off [7] . 47
Figure 37 – Transall C160 vibration at fuselage floor during cruise [7] . 47
Figure 38 – Transall C160 vibration at fuselage floor during landing [7] . 48
Figure 39 – Lockheed C130J variant vibration at plane of propeller during cruise . 48
Figure 40 – Airbus A400M vibration on fuselage floor during cruise conditions . 49
Figure 41 – IEC 60721-3-2 [13] – Stationary vibration random severities . 49
Figure 42 – IEC TR 60721-4-2 [14] – Stationary vibration random severities . 50
Figure 43 – IEC 60721-3-2 [13] – Stationary vibration sinusoidal severities . 50
Figure 44 – IEC TR 60721-4-2 [14] – Stationary vibration sinusoidal severities . 51
Figure 45 – IEC 60721-3-2 [13] – Shock severities . 51
Figure 46 – IEC TR 60721-4-2 [14] – Shock severities for IEC 60068-2-29 [17] test
procedure . 52
Figure 47 – IEC TR 60721-4-2 [14] – Shock severities for IEC 60068-2-27 [15] test
procedure . 52
Figure 48 – Comparison of four propeller aircraft vibrations [1] with IEC 60721-3-2 [13] . 53
Figure 49 – Comparison of Britten-Norman Islander aircraft vibrations [1] with
IEC 60721-3-2 [13] . 53
Figure 50 – Comparison of Lockheed C130 aircraft vibrations [3] with IEC 60721-3-2 [13] . 54
Figure 51 – Comparison of Transall C160 aircraft vibrations [7] with IEC 60721-3-2 [13] . 54
Figure 52 – Comparison of Britten-Norman Islander aircraft cruise vibrations [1] with
IEC 60721-3-2 [13] . 55
Figure 53 – Comparison of Britten-Norman Islander aircraft take-off/landing vibrations
[1] with IEC 60721-3-2 [13] . 55
Figure 54 – Comparison of Lockheed C130 aircraft cruise vibrations [3] with
IEC 60721-3-2 [13] . 56

– 4 – IEC TR 62131-6:2017 © IEC 2017
Figure 55 – Comparison of Lockheed C130 aircraft take-off/ landing vibrations [3] with
IEC 60721-3-2 [13] . 56
Figure 56 – Comparison of Lockheed C130J variant cruise vibrations with
IEC 60721-3-2 [13] . 57
Figure 57 – Comparison of Airbus A400M cruise vibrations with IEC 60721-3-2 [13] . 57
Figure 58 – Comparison of Lockheed C130 landing shocks [4] with IEC 60721-3-2 [13] . 58

Table 1 – Record durations and error estimates for measured data for Britten-Norman
Islander aircraft flight measurements . 9
Table 2 – Record durations and error estimates for measured data for Lockheed C130
flight vibration measurements . 11
Table 3 – Overall rms severities for Britten-Norman Islander [2] . 31
Table 4 – Overall rms severities for Lockheed C130 – Flight 3 [3] . 38
Table 5 – Overall rms seve
...

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