If you wish to contribute or participate in the discussions about articles you are invited to join SKYbrary as a registered user
From SKYbrary Wiki
Revision as of 09:31, 2 August 2017 by Editor1
In a two spool axial flow jet engine, N2 refers to the rotational speed of the high speed spool which consists of the high pressure compressor and the high pressure turbine. These components are connected by a concentric shaft. In a three spool engine, N2 refers to the rotational speed of the intermediate speed spool consisting of the intermediate pressure compressor and turbine.