INVENT: Mission-Integrated Optimization of a Tip-to-Tail High Performance Aircraft System

摘要

A tip-to-tail model of a long range strike fighter developed as part of the INVENT program has been implemented by the Air Force Research Laboratory (AFRL) and other INVENT contributors into a cohesive adaptable, dynamic aircraft simulation program in Mathwork's Simulink™. The resulting model known as the "tip-to-tail" model meets the design specifications set forth by the INVENT program. The system consists of six intimately linked subsystems that include a propulsion subsystem (PS), avionics subsystem (AVS), robust electrical power subsystem (REPS), high performance electric actuation subsystem (HPEAS), adaptive power thermal management subsystem (APTMS), and a fuel thermal management subsystem (FTMS). The model's governing equations are augmented with experimental data and supported by defined physical parameters. To run a flight simulation, the tip-to-tail model requires a mission profile, which includes the instantaneous altitude and Mach number. Using these, the propulsion and avionic subsystems generate power and thermal loads to meet the performance requirements. The REPS and HPEAS simulate thermal loads from other aircraft components; and as a result of these loads, the APTMS and FTMS accept and reject energy via heat exchangers and heat sinks throughout the aircraft to maintain the necessary operating conditions. This paper presents some preliminary results for the mission-integrated design and operational optimization of this tip-to-tail model.