The Collaborative International Dictionary of English v.0.48:

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.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

aeromechanics
    n 1: the branch of mechanics that deals with the motion of gases
         (especially air) and their effects on bodies in the flow
         [syn: aeromechanics, aerodynamics]

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "aeromechanics":
   aerial photography, aeroballistics, aerodynamics, aerogeology,
   aerography, aerology, aeromedicine, aerometry,
   aeronautical meteorology, aerophotography, aerophysics, aeroscopy,
   aerospace research, aerostatics, animal mechanics,
   aviation technology, avionics, biomechanics, celestial mechanics,
   climatology, electromechanics, fluid mechanics, hydromechanics,
   hydrostatics, kinematics, kinetics, leverage, mechanical arts,
   mechanics, meteorology, photometry, pneumatics, quantum mechanics,
   rational mechanics, rocketry, servomechanics,
   statistical mechanics, supersonics, wave mechanics, zoomechanics