EACH blade of an airscrew is submitted to an elementary static balance check after it has been completed. But this operation does not eliminate the necessity to carry out a general balance of the complete airscrew. This is carried out statically, first of all for the hub alone, and then statically and dynamically for the completely assembled airscrew.
Castaing, H. (1941), "The Balancing of Airscrews: The Methods employed by the Hispano Suiza Firm with Descriptions of the Machines used", Aircraft Engineering and Aerospace Technology, Vol. 13 No. 3, pp. 61-65. https://doi.org/10.1108/eb030747Download as .RIS
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