Simulation of helicopter shipboard launch and recovery with time-accurate airwakes

Dooyong Lee, Nilay Sezer-Uzol, Joseph Francis Horn, Lyle Norman Long

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

A simulation of the helicopter/ship dynamic interface has been developed and applied to simulate a UH-60A operating from a landing helicopter assault (LHA) class ship. Steady and time-accurate inviscid computational-fluid-dynamics (CFD) simulations are performed over a full-scale LHA class ship using the parallel flow solver PUMA2 to predict the unsteady vortical ship airwake. Time-accurate CFD solutions of the LHA airwake are interfaced with a flight dynamics simulation based on the GENHEL model. The flight dynamics model was updated to include improved inflow modeling and gust penetration effects of the ship airwake. An optimal control model of a human pilot was used to simulate pilot control activity for a specified approach and departure trajectory. The pilot model was designed so that the tracking performance could be tuned based on a desired crossover frequency in each control axis. Results show that the unsteadiness of the ship airwake has significant impact on pilot workload when the helicopter is operating near the deck and superstructure of the ship.

Original languageEnglish (US)
Pages (from-to)448-461
Number of pages14
JournalJournal of Aircraft
Volume42
Issue number2
DOIs
StatePublished - Jan 1 2005

Fingerprint

Helicopters
Ships
Recovery
Landing
Flight dynamics
Computational fluid dynamics
Parallel flow
Computer simulation
Dynamic models
Trajectories

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

Cite this

Lee, Dooyong ; Sezer-Uzol, Nilay ; Horn, Joseph Francis ; Long, Lyle Norman. / Simulation of helicopter shipboard launch and recovery with time-accurate airwakes. In: Journal of Aircraft. 2005 ; Vol. 42, No. 2. pp. 448-461.
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Simulation of helicopter shipboard launch and recovery with time-accurate airwakes. / Lee, Dooyong; Sezer-Uzol, Nilay; Horn, Joseph Francis; Long, Lyle Norman.

In: Journal of Aircraft, Vol. 42, No. 2, 01.01.2005, p. 448-461.

Research output: Contribution to journalArticle

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