VFS Website
  • VIEW CART
  • CUSTOMER SUPPORT
  • MY STORE ACCOUNT
  • CONTACT US
  • STORE HOME
  • 5Prime
  • Forum Proceedings
  • Workshops
  • Technical Meetings
  • Vertiflite
  • Books, CDs & Gifts


Unable to log in or get member pricing? Having trouble changing your password?

Please review our Frequently Asked Questions for complete information on these and other common situations.
 

Vertical Flight Library & Store

CHECKOUT

0 Item(s) In Cart Total: $0.00


High-Fidelity Multidisciplinary Design Optimization of Low-Noise Rotorcraft

Li Wang, Boris Diskin, National Institue of Aerospace; Leonard Lopes, Eric Nielsen, Elizabeth Lee-Rausch, Robert Biedron, NASA Langley Research Center

  • Your Path :
  • Home
  • > High-Fidelity Multidisciplinary Design Optimization of Low-Noise Rotorcraft

High-Fidelity Multidisciplinary Design Optimization of Low-Noise Rotorcraft

  • Presented at Forum 75
  • 13 pages
  • SKU # : 75_2019_0184_Wang
  • Your Price : $30.00
  • Join or log in to receive the member price of $15.00!


VFS member?
Don't add this to your cart just yet!
Be sure to log in first to receive the member price of $15.00!

 
Add To Cart

Add to Wish List

Reward Value:
(60) Member Points

High-Fidelity Multidisciplinary Design Optimization of Low-Noise Rotorcraft

Authors / Details: Li Wang, Boris Diskin, National Institue of Aerospace; Leonard Lopes, Eric Nielsen, Elizabeth Lee-Rausch, Robert Biedron, NASA Langley Research Center

Abstract
A high-fidelity multidisciplinary analysis and optimization methodology is presented for low-noise rotorcraft design.Tightly coupled discipline models include physics-based computational fluid dynamics, rotorcraft comprehensive analysis,and acoustic-noise prediction and propagation. A discretely-consistent adjoint methodology accounts for sensitivitiesof the unsteady flow and unstructured, dynamically deforming, overset grids. The sensitivities of structuralresponses to blade aerodynamic loads are computed using a complex-variable approach. Sensitivities of the acousticmetrics are computed by manual differentiation. Interfaces are developed to enable interactions between the coupleddiscipline models for rotorcraft aeroelastic and aeroacoustic analysis and the integrated sensitivity analysis. Themultidisciplinary sensitivity analysis is verified through a complex-variable perturbation approach. A gradient-basedoptimization for a HART-II rotorcraft configuration in a forward-flight condition is demonstrated with the objectiveof reducing a rotorcraft noise metric of interest, subject to aerodynamic and geometric constraints. The optimizedconfiguration achieves a notable noise reduction and satisfies all required constraints. Computational cost of the optimizationcycle is assessed in a high-performance computing environment and found to be acceptable for design ofrotorcraft in general level-flight conditions.

Recently Viewed Items

  • High-Fidelity Multidisciplinary Design Optimization of Low-Noise Rotorcraft

    Member Price :
    $15.00
    Your Price :
    $30.00

Popular Products

  • Master Card
  • Visa
  • American Express
  • Customer Support
  • Contact Us
  • Privacy and Security Policies
  • Refund Policies

Copyright © 2022 The Vertical Flight Society. All rights reserved.