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


State-Space Inflow Model Identification and Flight Dynamics Coupling for an Advanced Coaxial Rotorcraft Configuration

Sean Hersey, Roberto Celi, Ondrej Juhasz, Mark B. Tischler, Omri Rand, Vladimir Khromov

May 8, 2017

  • Your Path :
  • Home
  • > State-Space Inflow Model Identification and Flight Dynamics Coupling for an Advanced Coaxial Rotorcraft Configuration

State-Space Inflow Model Identification and Flight Dynamics Coupling for an Advanced Coaxial Rotorcraft Configuration

  • Presented at Forum 73
  • 18 pages
  • SKU # : 73-2017-0168
  • 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

State-Space Inflow Model Identification and Flight Dynamics Coupling for an Advanced Coaxial Rotorcraft Configuration

Authors / Details: Sean Hersey, Roberto Celi, Ondrej Juhasz, Mark B. Tischler, Omri Rand, Vladimir Khromov

Abstract
In order to consider the stability and controllability of advanced coaxial configurations, a better understanding of the aerodynamic interactions between rotors is required. Modern aerodynamic analysis tools such as free wake models can accurately model the behavior of the inflow of a coaxial configuration, without the inclusion of theoretical limitations and approximations used by classical-simplified schemes. They are not, however, expressed in state-space form and therefore can not be readily analyzed as a linear flight dynamics problem and are often computationally expensive. The objective of this paper is to extend a system identification method, which was previously validated for single main rotor helicopters, to the extraction of state-space linearized models from computed inflow data acquired from free wake models of a coaxial rotor in hover. Also a key extension of the identified inflow systems is shown to model inflow off of the rotor plane as a output equation of the inflow system, or as its own ODE inflow system. With state-space models of inflow defined for an advanced coaxial configuration, this paper also presents a study of the fully coupled aircraft flight dynamics, showing key effects of rotor inflow on the dynamics of a coaxial rotorcraft configuration.

Recently Viewed Items

  • State-Space Inflow Model Identification and Flight Dynamics Coupling for an Advanced Coaxial Rotorcraft Configuration

    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.