Progress Presentation ARDB Aircraft Systems Panel October 22, 2002 RCI, Hyderabad Centre for Aerospace Systems Design & Engineering Indian Institute of Technology Bombay

Objectives, Mission SDE Education Multi-disciplinary Design Optimisation System Level Studies CASDE Shall Strive to Develop and Retain Strong Links With Indian Aerospace Industry And Shall Engage in R&D Activities With Worldwide Visibility

October 12, 2001 to October 22, 2002 EVENTS Oct 12, 2001 : ARDB ASP Meeting Nov 22, 2001 : ARDB TC Meeting Jan 2, 2002 : Prof. A Joshi is new Head Feb 4, 2002 : VSSC hands over LVS Apr 13, 2002 : 1-Day Workshop on MAV Jun 4-6, 2002 : 3-Day Workshop on MDO Jun 10, 2002 : 3rd JPC Meeting Jun 27, 2002 : ARDB Meeting. Visitors Mr. Prahlada, Member, JPC Dr. BN Suresh, Member, JPC Visiting Faculty Dr. Kota Harinarayana Dr. PB Nair, Southampton Dr. Sudhakara Rao, VSSC

System Level Studies Day MAV Workshop (April 13, 2002) OILS : Joint Conceptual Studies. CASDE & Prof. Gandhi (ME), IITB (June-July, 2002) Propulsion systems test facility Solar Powered Aircraft CASDE & Tata BP Solar Partial success

Applied MECHATRONICS Course Course with a difference 2 theory and 3 lab hours per week. Project on a miniature ground vehicle. sensors, actuators, micro-controllers, etc New Open M. Tech Programme

RAP - Trajectory Recording Ram Air Parachute flight tests GPS data for 45 mins

3-Day Workshop (June 4-6, 2002) Progress Aero-elastic Capability Further Develop MDO-Framework Version-II Composite teams to solve problems International Conference “Modeling, Simulation, Optimization For Design of Multi-disciplinary Engineering Systems” September Ph. D Scholars DRDL - Hypersonic Vehicles VSSC - Design under Uncertainty VSSC - Vehicle + Trajectory Optim VSSC - Re-usable Launch Vehicles P&W shows interest MDO Studies gather momentum

Software Architecture Optimizer FSQP INTERFACEINTERFACE History Block Input Processor Output Processor Aerodynamics (VLM) Structures MSC/ NASTRAN NASTRAN Interface Analysis Block Aeroelasticity Iterator Simultaneous Aerodynamic and Structural Optimization of Aircraft Wing

NASTRAN Interface Code Wing Geometry Meshing Parameters Load Transformation Input file for NASTRAN Output file of NASTRAN MSC/ NASTRAN Loads Transferred on FEM Nodes FEM Nodal Co-ordinates Aerodynamic Loads on Quarter Chord points of VLM Panels Max Stresses, Displacement s, twist and Wing Structural Mass Nodal displacements Panel Angles of Attack VLM Wing Geometry, Mach Number Displacement Transformation Analysis Block (File parsing) (Auto mesh & data-deck Generation)

Figs. 1-4: Development of Wing model and loads Figs. 5-6: Load Transformation Process 5 - Aerodynamic Loads and its Response 6 - Structurally equivalent Loads and its Response FEM Model

EntryExit y, z p merger x 0 LmLm L m /2 p entry y 1, z 1 y 2,z 2 x  0 L L/3 A entry A exit 2L/3 11 22 Mean Flow line variation Area variation 3D duct (  Y =0.1,  Z =0.1,  1 =0.1,  2 =0.1) Low Fidelity Analysis (LFA) Wall angle < 6° Diffusion angle < 3° 6 * Eq. Radius < ROC Pressure Recovery Parameterization MFL shape is defined by two cubic splines. (  y,  z ) Area variation from entry to exit is specified as cubic spline. (  1,  2 ) Feasible space (LFA) 0   Response Surface Method Define reduced design space through LFA DOE in reduced design space Perform high fidelity analysis at DOE points (NS simulation for distortion and swirl) Replace high fidelity analysis with response surface Optimize using RS 3D-Duct Design using Variable Fidelity RSM yzyz

Architectural Design Intuitive GUI object-oriented handle large problems multi-user support standards based Problem Formulation complex branching legacy/proprietary code multiple optimizers Problem Executtion automate data movement visualization heterogeneous computing distributed computing batch processing Information Access database management monitoring system status fault tolerance MDO Framework Requirements Data Server Sequence of Execution Analysis 2Analysis 3Analysis 4 Initial Data Result Analysis Framework Version 1: Data server Database Configuration Execution Manager Sequence Logic MDO Controller Status/Log Handler Data Server OPT1 Optimizer Manager OPT2OPT3 AM1 Agent AM2AM3 GUI Framework Version 2: Architecture Problems Attempted Airborne Early Warning System 3D Duct Design Transport Aircraft Wing MAV design MDO Framework Development

CASDE – Proposal for Phase II 2 Years –MDO –SDE Education –Integrated Modelling & Simulation Funds – = Draft Proposal pending with JPC/SPC

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Visit 100 schools 100 th Year of First Flight Traveling Course On Design, Build, Fly Offered at NIAT, MIT, Parks Aerospace to Schools & Colleges. Lectures, Demos, Projects, Workshops