Hostname: page-component-745bb68f8f-l4dxg Total loading time: 0 Render date: 2025-01-12T23:01:27.013Z Has data issue: false hasContentIssue false
  • English
  • Français

The longitudinal flying qualities of a blended-wing-body civil transport aircraft

Published online by Cambridge University Press:  03 February 2016

M. V. Cook  and
H. V. de Castro
M. V. Cook
Affiliation:
Cranfield College of Aeronautics, Cranfield University, Bedford, UK
H. V. de Castro
Affiliation:
Cranfield College of Aeronautics, Cranfield University, Bedford, UK
Get access Rights & Permissions [Opens in a new window]

Abstract

This paper describes an evaluation of the longitudinal flying qualities of a generic blended-wing-body (BWB) transport aircraft at low speed flight conditions. Aerodynamic data was obtained from several sources and integrated into the equations of motion of a typical BWB configuration in order to provide a reasonable basis for flying qualities assessment. The control requirements to trim are enumerated for a representative range of cg position and static margin over the typical range of approach speeds for both stable and unstable configurations. The linear dynamic characteristics of the unaugmented airframe are also described for the same range of stability margin. Subsequent work describes the development of a rate command-attitude hold command and stability augmentation system configured to comply with representative modern handling criteria. Finally, the flight dynamics of the augmented aircraft are described after refinement of the control law by means of piloted simulation in a fixed base flight simulator.

Type
Research Article
Information
The Aeronautical Journal , Volume 108 , Issue 1080 , February 2004 , pp. 75 - 84
Copyright
Copyright © Royal Aeronautical Society 2004 

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. Smith, H., Howe, D. and Fielding, J.P. Blended wing body high capacity airliner BW-98 Project Specification. AVD 9800/1, College of Aeronautics, Cranfield University, September 1998.Google Scholar
2. Smith, H. Blended wing body airliner advanced technology integration study BW-01 project specification. AVD 0100/1, Aerospace Engineering Group, School of Engineering, Cranfield University, October 2001.Google Scholar
3. ANON MOB – A computational design engine incorporating multi-disciplinary design and optimisation for blended wing body configurations. EU Contract: 01/03/2000-G4RD-CT-1999-00172.Google Scholar
4. De Castro, H.V. The longitudinal static stability of tailless aircraft. CoA report No 0018/1, College of Aeronautics, Cranfield University, August 2001.Google Scholar
5. ANON joint aviation requirements – JAR 25, Large aeroplanes. Joint Aviation Authority.Google Scholar
6. ANON Federal Aviation Regulations – Part 25. Federal Aviation Administration, United States Department of Transportation.Google Scholar
7. ANON Military Specification – Flying Qualities of Piloted Aircrafts. MILF-8785C. Department of Defense, USA, 1980.Google Scholar
8. ANON Design and Airworthiness requirements for service aircraft. Defence Standard 00-970/Issue1, 1, Book 2, Part 6 – Aerodynamics, flying qualities and performance. Ministry of Defence, UK. 1983.Google Scholar
9. ANON Military Standard – Flying qualities of piloted airplanes. Mil-STD-1797A (USAF). Department of Defense, USA. 1987.Google Scholar
10. Mitchell, D.G., Hoh, R.H., Aponso, B.L. and Klyde, D.H. Incorporation of mission oriented flying qualities into MIL-STD-1797A. WL-TR-94-3162, Wright Laboratories, October 1994.Google Scholar
11. Gautrey, J.E. and Cook, M.V. A generic control anticipation parameter for aircraft handling qualities evaluation, Aeronaut J, March 1998, 102, (1013), pp 151–159.Google Scholar