Correction to: Adv Aerodyn 3, 8 (2021)

https://doi.org/10.1186/s42774-020-00060-9

After publication of this article [1], it is noticed letter ‘a’ is missing from the below sentence in section 6.2 ‘Adding stretching components’:

The subscript “ ” means “adding” the stretching components.

The correct sentence should be:

The subscript “a” means “adding” the stretching components.

The original article has been updated.