Tiêu chuẩn iso 00011 1987 scan

INTERNATIONAL
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STANDARD

IS0
11
Second edition
1987-02-01

INTERNATIONAL

ORGANIZATION

ORGANISATION

INTERNATIONALE

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FOR STANDARDIZATION
DE NORMALISATION
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Aircraft - Ground pressure testing connections for
pressure cabins
Ahronefs -

Raccords pour essais de pressurisation au sol de la cabine des akronefs

Reference number
IS0 11: 1987 (E)


Foreword
IS0 (the international Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 technical committees. Each member
body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 11 was prepared by Technical Committee ISO/TC 20,
Aircraft and space vehicles.
This second edition cancels and replaces the first edition (IS0 11 : 19801, of which it
constitutes a minor revision.
Users should note that all International Standards undergo revision from time to time
and that any reference made herein to any other International Standard implies its
latest edition, unless otherwise stated.

0

International Organization for Standardization, 1987 0

Printed in Switzerland

INTERNATIONAL

IS0

STANDARD

Aircraft - Ground
pressure cabins

1

Scope

and field

This International

specifies

requirements

on pressurized

aircraft

tor of ground

pressurizing

tion are specified

2

of application

Standard

access clearance

pressure testing

for coupling

as follows

the basic dimensional

for pressure testing

and

bore

Reference

IS0 725, IS0

inch screw threads -

1)

(0.875 in)

Three sizes of connec-

3

Requirements

.

Recommended

Basic

dimensions

cabin volume

Not exceeding

10 ma (300 fta)

46,04 mm (I .812 5 in)

10 to 45 m3 (300 to 1 500 ft3)

72.39 mm (2.85 in)

45 to 170 ms (I 500 to 6 000 ft3)

The 22,22

Basic dimensions.

with the hose unit or adap-

equipment.

The basic dimensions
22,22 mml)

for

connections

3.1
Connection

connections

11 : 1987 (E)

requirements

3.2

Access

The

clearance

accordance

of the connections

shall conform

to the

of the figure.

with

clearance
allowed

around

the

connections

shall

be in

the figure.

mm (0 875 in) bore connection should be used as the fitting for ducting pressure testing

1


IS0 11 : 1987 (El

h : Chamfer for 0 875
and 1 812 5 nominal
bore size
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Permissible limit of
permanent structure
Undercut to thread
minor diameter

Detail of start of first
thread for 2 85 nominal
bore size

1)

Recommended

2)

Full thread.

3)

Radius.

4)

Threads

bore.

in accordance

with IS0 725.

Figure -

Basic dimensions and clearance requirements





IS0 11 : 1667(E)

UDC 626.7.026: 621.643.414
Descriptors

: aircraft, aircraft cabins, pressurized cabins, pressure tests, aircraft equipment,

Price based on 2 pages

pipe fittings, inlet connections, dimensions.