Source : Webster's Revised Unabridged Dictionary (1913)

Aeromechanics \A`["e]r*o*me*chan"ics\, n.
   The science of equilibrium and motion of air or an
   a["e]riform fluid, including a["e]rodynamics and
   a["e]rostatics.

Source : WordNet®

aeromechanics
     n : the branch of mechanics that deals with the motion of gases
         (especially air) and their effects on bodies in the flow
         [syn: {aerodynamics}]