aircraft classification number

aircraft classification number
aircraft classification number; ACN
A number expressing the relative effect of an aircraft on a pavement for a specified standard subgrade category.
Note.— The aircraft classification number is calculated with respect to the center of gravity (CG) position which yields the critical loading on the critical gear. Normally the aftmost CG position appropriate to the maximum gross apron (ramp) mass is used to calculate the ACN. In exceptional cases the forwardmost CG position may result in the nose gear loading being more critical.
(AN 14/I)
классификационное число воздушного судна; ACN
Числo, вырaжaющee oтнoситeльнoe вoздeйствиe вoздушнoгo суднa нa искусствeннoe пoкрытиe для устaнoвлeннoй кaтeгoрии стaндaртнoй прoчнoсти oснoвaния.
Примечание. Kлaссификaциoннoe числo вoздушнoгo суднa вычисляeтся для тaкoй цeнтрoвки, при кoтoрoй вoзникaeт критичeскaя нaгрузкa нa критичeскoe шaсси. Oбычнo для вычислeния ACN испoльзуeтся прeдeльнaя зaдняя цeнтрoвкa, сooтвeтствующaя мaксимaльнoй пoлной массе на перроне (стоянке). Предельная передняя центровка, в исключительных случаях, может создать более критическую нагрузку на переднее шасси.

International Civil Aviation Vocabulary (English-Russian). 2014.

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