cranfield0100

vibrat isol aircraft power plant vibrat aircraft structur almost alway trace vibratori forc origin power plant forc transmit aircraft two way action air forc upon surfac aircraft adjac slip stream propel direct transmiss unbalanc forc power plant engin mount latter alway caus preponder disturb vibratori stress induc engin mount structur occasion produc fatigu failur associ part alway shorten use life entir aircraft structur import howev psycholog physiolog effect continu vibrat attend nois passeng crew may like major sourc rapid fatigu intim associ fli import desir drastic reduc vibrat hardli question paper limit consider directli transmit forc consid power plant rigid bodi attach flexibl mean aircraft also consid rigid bodi rel larg mass also limit case engin engin support structur axial symmetri radial engin although method employ could easili extend case