TY - BOOK ID - 145442869 TI - Design of quiet rotorcraft approach trajectories AU - Padula, S. L. AU - Langley Research Center. PY - 2009 PB - Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center, DB - UniCat KW - Genetic algorithms. KW - Rotary wing aircraft. KW - Noise reduction. KW - Trajectories. KW - Helicopters. KW - Acoustic properties. KW - Aircraft design. UR - https://www.unicat.be/uniCat?func=search&query=sysid:145442869 AB - ER -