Historical Review of Uncommanded Lateral-Directional Motions at Transonic Conditions

We present the results of a survey of past experiences with uncommanded lateral-directional motions at transonic speeds during specific military aircraft programs. The effort was undertaken to provide qualitative and quantitative information on past airplane programs that might be of use to the participants in the joint NASA/Navy/Air Force Abrupt Wing Stall Program. The Abrupt Wing Stall (AWS) Program was initiated because of the experiences of the F/A-18E/F development program, during which unexpected, severe wing-drop motions were encountered by preproduction aircraft at transonic conditions. These motions were judged to be significantly degrading to the primary mission requirements of the aircraft. Although the problem was subsequently solved for the production version of the F/A-18E/F, a high-level review panel emphasized the poor understanding of such phenomena and issued a strong recommendation to initiate a national research effort to thoroughly and systematically study the wing drop phenomena. A comprehensive, cooperative NASA/Navy/Air Force AWS Program was designed to respond to provide the required technology requirements

[1]  Paresh Parikh,et al.  A Computational Study of the AWS Characteristics for Various Fighter Jets: Part I, F/A-18E & F16-C , 2003 .

[2]  Paresh Parikh,et al.  AIAA 2003-0923 RECOMMENDATIONS FOR CFD PROCEDURES FOR PREDICTING ABRUPT WING STALL , 2003 .

[3]  J. R. Chambers,et al.  Analysis of lateral directional stability characteristics of a twin jet fighter airplane at high angles of attack , 1969 .

[4]  Joseph R. Chambers,et al.  Accomplishments of the Abrupt Wing Stall (AWS) Program and Future Research Requirements , 2003 .

[5]  R. C. Monaghan,et al.  Effects of flaps on buffet characteristics and wind-rock onset of an F-8C airplane at subsonic and transonic speeds , 1973 .

[6]  J. R. Chambers,et al.  Self-induced wing rock of slender delta wings , 1981 .

[7]  Bradford E. Green,et al.  F/A-18C to E Wing Morphing Study for the Abrupt Wing Stall Program , 2005 .

[8]  Chintsun Hwang,et al.  Some observations on the mechanism of aircraft wing rock , 1978 .

[9]  J. R. Chambers,et al.  An Integrated Approach to Assessment of Abrupt Wing Stall for Advanced Aircraft (Invited) , 2003 .

[10]  Francis J. Capone,et al.  Development of a Free-to-Roll Transonic Test Capability (Invited) , 2003 .

[11]  W. S. Pi,et al.  Investigation of steady and fluctuating pressures associated with the transonic buffeting and wing rock of a one-seventh scale model of the F-5A aircraft , 1978 .

[12]  Rudolph D Van Dyke,et al.  Flight measurements of the wing-dropping tendency of a straight-wing jet airplane at high subsonic Mach numbers , 1951 .

[13]  Robert Hanley.  Development of an airframe modification to improve the mission effectiveness of the EA-6B airplane , 1987 .

[14]  D. G. Mabey,et al.  Similitude relations for buffet and wing rock on delta wings , 1997 .

[15]  Richard S. Bray,et al.  The Effectiveness of Wing Vortex Generators in Improving the Maneuvering Characteristics of a Swept-wing Airplane at Transonic Speeds , 1955 .

[16]  Francis J. Capone,et al.  Free-To-Roll Analysis of Abrupt Wing Stall on Military Aircraft at Transonic Speeds , 2003 .

[17]  L. T. Nguyen,et al.  Wind-tunnel free-flight investigation of a model of a forward-swept-wing fighter configuration , 1984 .

[18]  W. J. Sefic,et al.  Flight measurements of buffet characteristics of the F-104 airplane for selected wing-flap deflections , 1972 .

[19]  Paul E Purser.  Notes on low-lift buffeting and wing dropping at Mach numbers near 1 , 1951 .

[20]  Andrew Arena,et al.  Experimental Investigations on Limit Cycle Wing Rock of Slender Wings , 1994 .

[21]  Scott Stevenson,et al.  Parameter identification of AV-8B wingborne aerodynamics for flight simulator model updates , 1992 .

[22]  William A Lusby,et al.  T-38A CATEGORY II STABILITY AND CONTROL TESTS , 1961 .

[23]  Shawn H. Woodson,et al.  Introduction to the Abrupt Wing Stall (AWS) Program , 2004 .

[24]  E. J. Ray,et al.  Subsonic characteristics of a twin-jet swept-wing fighter model with maneuvering devices , 1973 .

[25]  T. R. Sisk,et al.  Precision controllability of the YF-17 airplane , 1979 .

[26]  P. C. Parikh,et al.  A computational study of the abrupt wing stall (AWS) characteristics for various fighter Jets: part II, AV-8B & F/A-18C , 2003, 2003 User Group Conference. Proceedings.

[27]  T. R. Sisk,et al.  A TECHNIQUE FOR THE ASSESSMENT OF FIGHTER AIRCRAFT PRECISION CONTROLLABILITY , 1978 .

[28]  Francis J. Capone,et al.  AWS Figure of Merit (FOM) Developed Parameters from Static, Transonic Model Tests , 2003 .

[29]  James R. Forsythe,et al.  Unsteady CFD Calculations of Abrupt Wing Stall Using Detached-Eddy Simulation , 2003 .

[30]  Arvel E. Gentry,et al.  Investigation of Aerodynamic Analysis Problems in Transonis Maneuvering. Volume I. , 1971 .

[31]  L. E. Ericsson,et al.  Various sources of wing rock , 1990 .

[32]  C. O. OVLeary.  WIND-TUNNEL MEASUREMENT OF LATERAL AERODYNAMIC DERIVATIVES USING A NEW OSCILLATORY RIG, WITH RESULTS AND COMPARISONS FOR THE GNAT AIRCRAFT By C. O. OVLeary , .

[33]  Alexander Kokolios,et al.  Use of Piloted Simulation for Evaluation of Abrupt-Wing-Stall Characteristics , 2005 .

[34]  J. R. Chambers,et al.  Results of piloted simulator studies of fighter aircraft at high angles of attack , 1978 .

[35]  Michael T. Davison.  An Examination of Wing Rock for the F-15 , 1992 .

[36]  E. L. Friend,et al.  Flight comparison of the transonic agility of the F-111A airplane and the F-111 supercritical wing airplane , 1978 .

[37]  C. E. Libbey,et al.  Dynamic stability derivatives of a twin-jet fighter model for angles of attack from -10 deg to 110 deg , 1971 .

[38]  D. G. Murri,et al.  Experimental study of effects of forebody geometry on high angle of attack static and dynamic stability and control , 1986 .

[39]  W. P. Henderson,et al.  Rolling stability derivatives of a variable- sweep tactical fighter model at subsonic and transonic speeds , 1967 .

[40]  W. S. Pi,et al.  Investigation of Northrop F-5A wing buffet intensity in transonic flight , 1974 .

[41]  Paresh Parikh,et al.  Understanding Abrupt Wing Stall with CFD , 2003 .

[42]  D. Schuster,et al.  Transonic Unsteady Aerodynamics of the F/A-18E at Conditions Promoting Abrupt Wing Stall (Invited) , 2003 .

[43]  L. T. Nguyen,et al.  Flight test experience with high-alpha control system techniques on the F-14 airplane , 1981 .

[44]  Francis J. Capone,et al.  RECOMMENDED EXPERIMENTAL PROCEDURES FOR EVALUATION OF ABRUPT WING STALL CHARACTERISTICS , 2003 .