George H. Bryan

George Hartley Bryan FRS[1] (1 March 1864 – 13 October 1928) was an English applied mathematician who was an authority on thermodynamics and aeronautics.

[2] He was a professor at University College of North Wales, and is generally credited with developing the modern mathematical treatment of the motion of airplanes in flight as rigid bodies with six degrees of freedom.

This effect is the theoretical basis for modern solid-state gyroscopy using hemispherical or "wine-glass" resonators, which were elaborated by Dr. David D. Lynch, et al. almost a century after Bryan's original discovery.

These novel, precise sensors are now developed in the United States, Ukraine, Singapore, Republic of Korea, France, RF, South Africa, and mainland China.

Bryan's seismologic studies of Coriolis effects in massive liquid spheres have received experimental confirmation from data collected by seismologic stations set up to detect nuclear explosions in the aftermath of World War II, as well as from seismographic data from the Great Chilean earthquake of 1960.

George Hartley Bryan (1864–1928). The originator, with W. E.Williams, of the equations of airplane motion. Bryan's equations are the basis for the analysis of airplane flight dynamics and closed-loop control and for the design of flight simulators.
G.H.Bryan's Plane "Bamboo Bird" at Red Wharf Bay , near Benllech , Anglesey.