Satish Dhawan, Indian aerodynamicist (Srinagar, Kashmir & Jammu 25 September 1920 – Bangalore 03 January 2002)

Made the first measurements of skin friction in a surface and its effective deflection against a spring resistance

Designed a special balance for direct measurement of skin friction in rates with high and/or  low flows 

Provided the first practical model for the transition zone in boundary layers

Discovered connections with transition to turbulent flow in pipes and channels