I am making a timeline on the History of fligt and I was looking at pilots. the internet says the first pilot license was recived in 1927, But, When looking up Who the first female pilot was the answer was Quimby, who got her license in 1911. So I am was wondering how Quimby got her license before mac cracken.

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.