AMESim Applications in Aeronautics EADS Military Aircraft / IMAGINE October, 2004 Cédric Roman Project Engineer, IMAGINE S.A. AMESim Applications in Aeronautics Flight Control Landing gear Life Support Crew Escape Fuel System Environmental Control System Flight control Landing gear Braking Structure/actuator coupling Electrical power system Propulsion Ground simulation rig (iron bird) Aeronautics Fuel Systems Refueling System Thermal Management (A/C, Cooling,…) Aircraft Environmental control systems Aeronautics Hydraulic Systems Oxygen and Life Support … 2 Flight Control Flight Control Landing gear All types of controlled systems coupling mechanical, electro-mechanical, hydraulic, thermal Life Support Crew Escape Fuel System Environmental Control System Mechanism Animation 3 Landing Gear: 2D mechanism Flight Control Landing gear mechanism Landing gear Life Support Crew Escape Fuel System Environmental Control System Mechanism Animation 4 Landing gear Flight Control Landing gear Life Support Crew Escape Fuel System Environmental Control System Nose gear steering systems 5 Landing gear Flight Control Rear Suspension Landing gear Life Support Crew Escape Fuel System Environmental Control System Relative displacement (piston – envelope) 6 7 Landing gear Flight Control Integration and coupling Aerodynamic forces Landing gear Life Support Crew Escape Fuel System Vaircraft Vwheel Environmental Control System Flight parameters Angle of attack > Architectur & System level Landing gear mechanism Suspension Brake Life support : Oxygen Systems Flight Control Landing gear Life Support Intertechnique is using the AMESim software and IMAGINE services in the development of their different products like O2 masks. Crew Escape Fuel System Environmental Control System Example of use of AMESim: ¾System Stability ¾Robust design ¾O2 consumption 8 Life support : Oxygen Systems Flight Control Distribution network and consumption over flight profile Landing gear Life Support Crew Escape Points of interest of different consulting projects: - Consumption Fuel System - Ejector performance Environmental Control System - Optimization of dilution Air-O2 - Electro-pneumatic regulator design 9 Life support : Oxygen Systems Flight Control Gas exchanges in lung Landing gear Life Support Crew Escape Fuel System Environmental Control System O2 and CO2 exchanges between air and blood in lung 10 Life support : Human performances Flight Control Landing gear Life Support Qinetiq is using the software AMESim for their different study of human performance in extreme environments. Crew Escape Fuel System Breathing Equipment Library Environmental Control System Simple Demand Regulator Simulation 11 Life support : Respiratory mechanics Flight Control Landing gear An example of openness in AMESIM Life Support Crew Escape Fuel System Environmental Control System Simulation System of Respiratory Mechanics 12 13 Crew Escape Flight Control Landing gear Life Support Pyrotechnic applications Key points: Crew Escape Fuel System Environmental Control System •Powder combustion •Real gas modeling •Gas mixtures Fuel System Flight Control Landing gear Life Support Crew Escape Fuel System Environmental Control System From reservoir to injectors Circuit Pumps Valves Ejectors Thermal aspects Control 14 Fuel System Flight Control Landing gear CASE STUDY N.1 (Mr. Georgi): Fuel Pump Test Life Support Crew Escape Fuel System Environmental Control System Different Flight Scenarii can control from Excel the pump model in AMESim for different altitude. 15 16 Fuel System Flight Control Combustion, thrust, control, Secondary Power Syst. Landing gear Life Support Crew Escape Fuel System Environmental Control System Combustion calculation and control validation Preliminary performance studies … Environmental Control System Flight Control Landing gear Life Support Crew Escape Fuel System Environmental Control System Heat exchangers and temperature control 17 Environmental Control System Flight Control Landing gear Life Support Crew Escape Fuel System Environmental Control System CASE STUDY N.2 (Mr. Thiele): Heat exchangers and temperature control 18 19 Environmental Control System Flight Control Landing gear Life Support Crew Escape CASE STUDY N.2 (Mr. Thiele): Heat exchangers and temperature control 25°C 35°C Fuel System Environmental Control System -18°C -4°C -16°C 58°C Heat=30kW Environmental Control System Flight Control Air moisture modelling Landing gear Life Support Crew Escape Fuel System Environmental Control System •Controlling relative humidity •Avoiding water condensation in pneumatic circuit 20 Environmental Control System Flight Control Landing gear Life Support Crew Escape Fuel System Environmental Control System Air conditioning 21 Environmental Control System Flight Control Landing gear CASE STUDY N.3 (Mr. Thiele): Air Conditioning Vapour cycle – Single Stage Process – R134A Life Support Crew Escape Fuel System Environmental Control System Libraries TPF/AC: results are coming from geometrical parameters For this case study n.3, AMESim allows a backward calculation method 22 Environmental Control System Flight Control Landing gear CASE STUDY N.3 (Mr. Thiele): Air Conditioning Backward Calculation Method - 1st Step: searching ? Life Support Crew Escape Fuel System Environmental Control System ? ? ? ? 23 24 Environmental Control System Flight Control Landing gear CASE STUDY N.3 (Mr. Thiele): Air Conditioning Backward Calculation Method - 1st Step: searching ? Life Support Crew Escape Fuel System Environmental Control System ? Using Optimization facility ? Design Exploration ? ? 25 Environmental Control System Flight Control Landing gear CASE STUDY N.3 (Mr. Thiele): Air Conditioning Backward Calculation Method - 1st Step: searching ? Life Support Crew Escape Fuel System Environmental Control System ? ? ? ? Using Optimization facility Design Exploration Environmental Control System Flight Control Landing gear Life Support Crew Escape Fuel System Environmental Control System CASE STUDY N.3 (Mr. Thiele): Air Conditioning Backward Calculation Method – 2nd Step: 26