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Quaranta, Giuseppe

Politecnico di Milano

in Cooperation with on an Cooperation-Score of 37%

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Places of action

Chart of shared publication
Scaramuzzino, Paolo Francesco - 3 publications, 2 shared
Stroosma, Olaf - 47 publications, 3 shared
Pool, Daan Marinus - 104 publications, 2 shared
Pavel, Marilena D. - 27 publications, 9 shared
Mulder, Mark - 658 publications, 5 shared
MUSCARELLO, VINCENZO - 17 publications, 16 shared
Nabi, Hafiz Noor - 1 publications, 1 shared
Visser, Coen C. de - 1 publications, 1 shared
Tamer, Aykut - 12 publications, 8 shared
Masarati, Pierangelo - 46 publications, 31 shared
Zanoni, Andrea - 3 publications, 1 shared
COCCO, ALESSANDRO - 5 publications, 1 shared
Colombo, F. - 1 publications, 1 shared
White, Mark - 20 publications, 3 shared
Barakos, George - 56 publications, 3 shared
Fossati, M. - 4 publications, 1 shared
Habashi, W. G. - 1 publications, 1 shared
Kelly, D. - 1 publications, 1 shared
Nabi, H. N. - 2 publications, 1 shared
Ying, Y. - 3 publications, 1 shared
Ezgi, A. - 1 publications, 1 shared
Friesen, Daniel - 4 publications, 1 shared
Ghiasvand, S. - 2 publications, 1 shared
Taymourtash, N. - 1 publications, 1 shared
Morelli, M. - 1 publications, 1 shared
Fasiello, S. - 1 publications, 1 shared
Scaramuzzino, P. F. - 1 publications, 1 shared
Huercas, S. - 1 publications, 1 shared
Dobrzynski, C. - 1 publications, 1 shared
Re, Barbara - 1 publications, 1 shared
Cirrottola, L. - 2 publications, 2 shared
Guardone, A. - 2 publications, 2 shared
Colombo, Attilio - 1 publications, 1 shared
Bottasso, Luigi - 1 publications, 1 shared
Congedo, P. M. - 3 publications, 2 shared
Fusi, F. - 3 publications, 2 shared
Favale, M. - 1 publications, 1 shared
Cocco, L. - 1 publications, 1 shared
Serafini, Jacopo - 17 publications, 4 shared
Gennaretti, Massimo - 6 publications, 2 shared
Zanoni, A. - 4 publications, 2 shared
P., Masarati - 1 publications, 1 shared
Bernardini, A. - 3 publications, 2 shared
Guglieri, Giorgio - 13 publications, 2 shared
A., Bernardini - 1 publications, 1 shared
G., Quaranta - 1 publications, 1 shared
Jump, M. - 13 publications, 5 shared
Ionita, A. - 4 publications, 3 shared
Dang-vu, B. - 3 publications, 2 shared
Gennaretti, M. - 28 publications, 3 shared
Yilmaz, D. - 4 publications, 3 shared
Lu, Lingrong - 20 publications, 2 shared
Zaichik, L. - 2 publications, 2 shared
Smaili, H. - 8 publications, 1 shared
Johnes, M. - 1 publications, 1 shared
Morandini, Marco - 9 publications, 1 shared
Motta, Valentina - 3 publications, 2 shared
Zanlucchi, S. - 1 publications, 1 shared
Jones, M. - 10 publications, 1 shared
Stefan, R. - 1 publications, 1 shared
Dang Vu, B. - 2 publications, 1 shared
Mihaila-andres, M. - 1 publications, 1 shared
Collela, M. M. - 1 publications, 1 shared
Fuiorea, I. - 1 publications, 1 shared
Colella, Marco Molica - 2 publications, 1 shared
Yaman, Y. - 2 publications, 2 shared
LOVERA, MARCO - 24 publications, 1 shared
Mantegazza, Paolo - 10 publications, 3 shared
Mattaboni, M. - 3 publications, 3 shared
Venrooij, J. - 20 publications, 1 shared
LOCATELLI, Andrea - 2 publications, 1 shared
Riviello, L. - 4 publications, 1 shared
Viganò, L. - 1 publications, 1 shared
Mangone, D. - 1 publications, 1 shared
Cavagna, L. - 6 publications, 1 shared
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conferencepaper

Investigation of the effects of autorotative flare index variation on helicopter flight dynamics in autorotation

  • Scaramuzzino, Paolo Francesco
  • Quaranta, Giuseppe
  • Stroosma, Olaf
  • Pool, Daan Marinus
  • Pavel, Marilena D.
  • Mulder, Mark
Abstract

<p>Autorotation is a flight condition whereby the engine of a helicopter is no longer supplying power to the main rotor system, which is driven solely by the upward flow of the air moving through the rotor. For helicopters, autorotation is a common emergency procedure performed by pilots to safely land the vehicle in the event of a power failure or tail-rotor failure. In the classic analysis of dynamic stability of helicopters in powered flight, it is common practice to neglect the effect of variation of rotor angular velocity, as the rotorspeed is constant. However, this assumption is no longer justified in case of autorotative flight. Therefore, the rotorspeed becomes an additional degree-of-freedom in autorotation, giving rise to a new stability mode that couples with classical rigid-body modes. The present paper aims at understanding the role of the rotorspeed degree-of-freedom in modifying the stability characteristics in autorotation of rotor systems with different autorotative flare indexes. Results show that the helicopter dynamics are considerably affected in autorotation as a consequence of the fact that the rotorspeed degree of freedom couples with the heave subsidence mode. Therefore, autorotation requires a different control strategy by the pilot and should not be mistakenly considered only as an energy management task. Furthermore, the autorotative flare index, used to characterize the autorotative performance during the preliminary design phase of a new helicopter, provides only energy information. Indeed, this paper demonstrates that high values of this index, representative of good autorotative performance in terms of available energy over required energy, may lead to degraded stability characteristics of the helicopter in autorotation.</p>

Topics
  • emergency
  • helicopter
  • simulation
  • engine
  • rotor
  • degree of freedom
  • angular velocity
  • power loss
  • dynamic stability
  • dynamic stability
  • dynamic stability
  • heaving