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Affordability is the cornerstone of the F-35 Lightning II, Joint Strike Fighter (JSF) program. Tw... more Affordability is the cornerstone of the F-35 Lightning II, Joint Strike Fighter (JSF) program. Twenty store loadings, with ten different weapons, will be certified on three F-35 aircraft variants during the System Development and Demonstration (SDD) phase of the program. Major cost savings targets for store separation are wind-tunnel testing and flight testing. Several innovative techniques have been developed and implemented to achieve an affordable store separation wind-tunnel test program while maintaining quality. Likewise, high fidelity store trajectory simulations and flight test rehearsal activities will lead to reduced flight test cost. Techniques for increased test efficiency, leveraging aircraft and store similarities, developing flight representative models, and reducing risk will be described. These techniques provide a strong basis for maintaining an affordable F-35 platform for current and future weapons integration. Nomenclature 6DOF = six degree-of-freedom ADAMS = Automatic Dynamic Analysis of Mechanical Systems AEDC = Arnold Engineering Development Center ASEP = ADAMS Store Separation DCLM = flowfield delta pitching moment coefficient DSSAS = Digital Store Separation Analysis Simulation CFD = computational fluid dynamics CTOL = Conventional Take Off and Landing CTS = captive trajectory system CV = Aircraft Carrier Variant DITL = Day-in-the-Life EAFB = Edwards Air Force Base EOS = end-of-stroke FLIP TGP= Flow-Field Load Influence Prediction Trajectory Generation Program FEM = finite element model ft = feet JDAM = Joint Direct Attack Munitions JPO = Joint Program Office JSF = Joint Strike Fighter lb = pounds LM = Lockheed Martin M&S = modeling and simulation PAX = Patuxent River Naval Air Station q = dynamic pressure SDD = System Development and Demonstration STOVL = Short Take Off/Vertical Landing = pitch attitude of the store relative to the captive carriage position TVIS = trajectory visualization tool UOH = user occupancy hours X = axial direction in the store captive carriage axis system Y = lateral direction in the store captive carriage axis system Z = vertical direction in the store captive carriage axis system 1
Affordability is the cornerstone of the F-35 Lightning II, Joint Strike Fighter (JSF) program. Tw... more Affordability is the cornerstone of the F-35 Lightning II, Joint Strike Fighter (JSF) program. Twenty store loadings, with ten different weapons, will be certified on three F-35 aircraft variants during the System Development and Demonstration (SDD) phase of the program. Major cost savings targets for store separation are wind-tunnel testing and flight testing. Several innovative techniques have been developed and implemented to achieve an affordable store separation wind-tunnel test program while maintaining quality. Likewise, high fidelity store trajectory simulations and flight test rehearsal activities will lead to reduced flight test cost. Techniques for increased test efficiency, leveraging aircraft and store similarities, developing flight representative models, and reducing risk will be described. These techniques provide a strong basis for maintaining an affordable F-35 platform for current and future weapons integration. Nomenclature 6DOF = six degree-of-freedom ADAMS = Automatic Dynamic Analysis of Mechanical Systems AEDC = Arnold Engineering Development Center ASEP = ADAMS Store Separation DCLM = flowfield delta pitching moment coefficient DSSAS = Digital Store Separation Analysis Simulation CFD = computational fluid dynamics CTOL = Conventional Take Off and Landing CTS = captive trajectory system CV = Aircraft Carrier Variant DITL = Day-in-the-Life EAFB = Edwards Air Force Base EOS = end-of-stroke FLIP TGP= Flow-Field Load Influence Prediction Trajectory Generation Program FEM = finite element model ft = feet JDAM = Joint Direct Attack Munitions JPO = Joint Program Office JSF = Joint Strike Fighter lb = pounds LM = Lockheed Martin M&S = modeling and simulation PAX = Patuxent River Naval Air Station q = dynamic pressure SDD = System Development and Demonstration STOVL = Short Take Off/Vertical Landing = pitch attitude of the store relative to the captive carriage position TVIS = trajectory visualization tool UOH = user occupancy hours X = axial direction in the store captive carriage axis system Y = lateral direction in the store captive carriage axis system Z = vertical direction in the store captive carriage axis system 1