High Angle of Attack (AoA) maneuverability is the symbolic characteristic of the fourth generation fighter. Our advanced fighter utilizes twin V-tails configuration, and this sort of aerodynamic design is proved to be well controllable at high AoA maneuvering flight. During high AoA maneuvering flight, the strong flow disturbance induced by the burst vortex shedding from fore-body impinge inevitably on the twin V-tails, and will induce severe buffet. The V-tails buffet will cause not only remarkable reduction of flight quality, but also structural fatigue damage, leading to high maintenance cost. This paper describes in detail the key techniques achieved during the engineering manufacturing and design of an aircraft with all-moving twin V-tails, which include: the design technique of rigid/ flexible hybrid model and testing methods of all-moving V-tail buffet wind tunnel test, as well as the principle of similarity transformation method which transforms test data from buffet wind tunnel test to fighter flight condition; the CFD/CSD coupling calculation method based on the RANS/LES hybrid algorithm; active control technique on V-tail buffet response alleviation based on macro fiber composite piezoelectric actuators and Positive Acceleration Feedback (PAF); the V-tail buffet fatigue spectrum generation method and test program. This research has established a set of systematical theoretical analysis techniques, design criteria, and test methods for aircraft V-tail structure buffet dynamic strength design and test of advanced fighters and UAVs.
JIN Wei
,
YANG Zhichun
,
MENG Dehong
,
CHEN Yan
,
HUANG Hu
,
WANG Yongjun
,
HE Shi
,
CHEN Yuanfang
. Strength desigh and test of advanced fighter all-moving twin V-tail buffet[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020
, 41(6)
: 523473
-523473
.
DOI: 10.7527/S1000-6893.2019.23473
[1] LEE B H K, BROWN D. Wind tunnel studies of F/A-18 tail buffet[J]. Journal of Aircraft, 29(1):146-152, 1992.
[2] 李劲杰, 杨青, 肖春生,等. 边条翼布局流场及其双垂尾抖振特性研究[J]. 航空学报, 2006, 26(3):395-398. LI J J, YANG Q, XIAO C S, et al. Investigation of flow and twin-vertical tail buffet characteristics of leading-edge extension configuration[J]. Acta Aeronautica et Astronautica Sinica, 2006, 27(3):395-398(in Chinese).
[3] HEALEY M D. F/A-18 E/F vertical tail buffet design, analysis and test[C]//44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston:AIAA,2003.
[4] CHRIS M. Incorporation of buffet into the F-35 full scale durability tests spectra[R].F-35-Structural Integrity Program, 2006.
[5] CHRISTONPHER L B. Buffet fatigue sequence generation from F-22 flight test data using frequency domain methods[C]//48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.Reston:AIAA, 2007.
[6] PATEL S R. F/A-22 vertical tail buffet strength certification[C]//46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston:AIAA,2005.
[7] YEHIA M R. Numerical investigation of tail buffet on F-18 aircraft[C]//10th Applied Aerodynamics Conference,1992.
[8] KEN G. Computational analysis of FA-18 tail buffet[C]//20th Atmospheric Flight Mechanics Conference, 1995.
[9] BRAFORD E G. Computational prediction of nose-down control for F/A-18E at high alpha[J]. Journal of Aircraft, 2008,45(5):1661-1668.
[10] 王巍. 压电结构振动主动控制及在尾翼抖振响应控制中的应用[D]. 西安:西北工业大学, 2009:30-35. WANG W. Application of piezoelectric structural vibration active control and its application to the control of vertical tail buffeting response[D]. Xi'an:Northwestern Polytechnical University, 2009:30-35(in Chinese).
[11] MORES R W. Active control of F/A-18 vertical tail buffeting using piezoelectric actuators[C]//44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.Reston:AIAA, 2003.
[12] ASHLEY H. Further study of active control for fin buffet alleviation with application to F-22:WL-TR-97-3073[R]. 1997.
[13] WILLIAM D A. F/A-22 high angle of attack buffet-test adequacy analysis[C]//22nd Applied Aerodynamics Conference and Exhibit Providence, 2004.
[14] HEWWITT R L. Spectrum editing for a full-scale fatigue test of a fighter aircraft wing with buffet loading[C]//ASTM Special Technical Publication,Fatigue Testing and Analysis Under Variable Amplitude Loading Conditions, 2003.
[15] CONSER D P, KEYS G L. F/A-18 production ASPJ vertical tail dynamic fatigue test FT98 test spectra development:MDC 91B0424[R]. St.LouiS:McDonnell Douglas Corporation, 1992.
[16] HEALEY M D. F/A-18E/F vertical tail dynamic fatigue test ESD03 test spectra development:MDC 93B0168[R]. St. Loui S:McDonnell Douglas Corporation, 1995.
[17] MOLENT L A D. Buffet loads and structural redundancy considerations inertial tail fatigue monitoring programs[C]//International Aerospace Congress, 1999.
[18] SHETA E F. Control of twin-tail buffet responses using normal leading-edge blowing:AIAA-2000-4227[R].Reston:AIAA, 2000.
[19] SHETA E F, HUTTSELL L J. Numerical analysis of F/A-18 vertical tail buffeting[C]//19th AIAA Applied Aerodynamics Conference Anaheim.Reston:AIAA, 2001.
[20] FERMAN M A, PAGEL S R. A unified approach to buffet response of fighter aircraft empennage:AGARD Report CP-483[R]. Sorrento:North Atlantic Treaty Organization, 1990.
[21] SHAH G H, GRAFTON S B, GUYNN M D, et al. Effect of vortex flow characteristics on tail buffet and high angle of attack aerodynamics of a twin tail fighter configuration[C]//High Angle of Attack Technology Conference.Washington,D.C.:NASA, 1990.
[22] ANDERSON W D, PATEL S R, BLACK C L. Low speed wind tunnel buffet testing on the F/A-22[C]//45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston:AIAA, 2004.
CJA