Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-22T19:27:40.587Z Has data issue: false hasContentIssue false
  • English
  • Français

Measurements of the oscillatory lateral derivatives of a high incidence research model (HIRM 1) at speeds up to M = 0.8

Published online by Cambridge University Press:  04 July 2016

C. O. O'Leary  and
E. N. Rowthorn
C. O. O'Leary
Affiliation:
Royal Aerospace Establishment, Bedford
E. N. Rowthorn
Affiliation:
Royal Aerospace Establishment, Bedford
Get access Rights & Permissions [Opens in a new window]

Summary

Tests were made to investigate the effects of Mach number on the oscillatory lateral derivatives of a three-surface, high-incidence research model (HIRM 1). Effects of Reynolds number and frequency parameter were also investigated at low speed. A new flexible sting and hydraulic actuator system were designed for the tests in the 2.4 m x 2.4 m Pressurised Wind Tunnel.

Results showed that the effects of Reynolds number and frequency parameter were not very significant at low speeds but there were quite large effects of Mach number on some derivatives, notably yawing and rolling moments due to sideslip and rate of yaw.

Type
Research Article
Information
The Aeronautical Journal , Volume 93 , Issue 921 , January 1989 , pp. 11 - 21
Copyright
Copyright © Royal Aeronautical Society 1989 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Ross, A. J. and Reid, G. E. A. Development of Mathematical Models for a High Incidence Research Model - Parts 1 and 2. RAE Technical Reports 83077 and 84072, 1983.Google Scholar
2. O'Leary, C. O. Dynamic Tests on a High Incidence Research Model (HIRM) in a Low-Speed Wind Tunnel. RAE Technical Report 84111, 1984.Google Scholar
3. Ross, A. J. and Edwards, G. F. Correlation of Predicted and Free-Flight Responses near Departure Conditions of a High Incidence Research Model. RAE Technical Memorandum Aero 2031, 1985.Google Scholar
4. O'Leary, C. O. Wind-Tunnel Measurement of Lateral Aerodynamic Derivatives using a New Oscillatory Rig, with Results and Comparisons for the Gnat Aircraft. RAE Technical Report 77159, 1977.Google Scholar
5. Ormerod, A. O. Unpublished test data.Google Scholar