Skip to main content

A Lifting Line Theory for Curved Helicopter Blades in Hovering and Axial Flight

Buy Article:

$30.00 plus tax (Refund Policy)

Abstract:

A lifting line model to calculate the aerodynamic loads along a curved helicopter blade, in hovering and axial flight, is derived. In the derivation a “semi‐rigid” wake model, which depends on the induced velocity distribution along the blade, is used. The influence of both trailing and bound vortices is taken into account. The derivation yields an efficient numerical scheme of calculations. Results for two different curved blades are presented and compared with similar straight blades. It is shown that curvature influences the distribution of the aerodynamic properties along the blades. Good agreement between the results of the present lifting line theory and a “momentum‐blade element” theory for curved blades is also presented.

Document Type: Research Article

DOI: https://doi.org/10.4050/JAHS.29.3

Affiliations: Department of Aeronautical Engineering, Technicon—Israel Institute of Technology, Haifa, Israel

Publication date: 1984-07-01

More about this publication?
  • The Journal of the American Helicopter Society is the world's only scientific journal dedicated to vertical flight technology. It is a peer-reviewed technical journal published quarterly by AHS International and presents innovative papers covering the state-of-the-art in all disciplines of rotorcraft design, research and development. (Please note that AHS members receive significant discounts on articles and subscriptions.)

    Journal subscribers who are AHS members log in here if you are not already logged in.

    Authors can find submission guidelines and related information on the AHS website.

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more