Wikipedia:Reference desk/Archives/Science/2022 December 19

= December 19 =

Vortex ring state
Are helicopters with coaxial rotors (like Kamov helicopters) less susceptible to vortex ring state? 2601:646:8A81:6070:CC33:2635:A453:3355 (talk) 06:39, 19 December 2022 (UTC)


 * They are clearly capable of entering VRS: see this (rather technical) paper on modelling the phenomenon in a Kamov Ka-32. Given the physical causes of the phenomenon, and the layout of such helicopters, I can't see any obvious reason why they should be less susceptible in principle. AndyTheGrump (talk) 06:52, 19 December 2022 (UTC)
 * According to Coaxial rotors the probability of entering the vortex ring state is reduced in case of the helicopters with coaxial rotors. Ruslik_ Zero 20:25, 19 December 2022 (UTC)
 * The sourcing for that claim looks less than ideal to me, given that it is a webpage from Kamov. AndyTheGrump (talk) 21:58, 19 December 2022 (UTC)