BS ISO 3324-1:2013 pdf free

BS ISO 3324-1:2013 pdf free.Aircraft tyres and rims
The tyre size designation for new design tyres in accordance with this part of ISO 3324 shall include a three-part size marking as follows:
Overall diameter x Overall section width – Nominal rim diameter
– tyre overall diameter and overall section width, both expressed in millimetres (mm) or both expressed in inches (in);
– nominal rim diameter, expressed as a code (see Table 1).
For radial-ply tyres, the letter“”R” shall be inserted between the overall section width and nominal rim diameter in the tyre size designation replacing the hyphen (“…”).
The size designation may also include one of the following letter prefixes:
– “B”indicates tyres for 15 taper bead seat rims with 60 % to 70 % rim width to tyre section width ratio;
– “H”indicates tyres for 5° taper bead seat rims with 60 % to 70 % rim width to tyre section width ratio.
See ETRTO Aircraft Data Book and TRA Aircraft Year Book for sizing conventions.
The marking of new tyres shall include the following:
a) tyre size designation;
b) ply rating (optional);
c) maximum speed rating, expressed in miles per hour (mile/h, also sometimes written mph) (civil only);
d) skid depth (mould), expressed in millimetres (mm) or inches(in) (civil only);
e) unique serial number and date of manufacture;-
f) the words “TUBELESS” or“TUBE TYPE” if applicable;
g) manufacturer’s (or brand) name, and country of manufacture;
h) balance mark;
i) venting mark, if applicable;
Tyre dimensions shall be measured after the new tyre has been mounted on the specified rim, inflated to its rated inflation pressure, and allowed to stand for a minimum of 12 h at normal room temperature and the inflation pressure readjusted to the original value. The maximum section width includes elevations due to labelling (marking, decorations, and all protective bands or ribs except chines).
Clearance allowances between the tyre and the adjacent parts of the aircraft shall be provided by the aircraft manufacturer. These allowances are to be based on the maximum overall tyre dimensions plus growth allowances due to service, plus the increase in diameter due to centrifugal force. Minimum distances to adjacent parts of the aircraft are determined as specified in 4.6.1.1 to 4.6.1.3.BS ISO 3324-1 pdf download.