Optimal energy management for hybrid electric aircraft

Flight Management System for Hydrogen-Powered Aircraft in Cruise

The minimization of the Direct Operating Cost (DOC) for hydrogen-powered aircraft is formulated in this paper as an optimal control problem and is solved based on Pontryagin's minimum principle. As a consequence, the optimum cruise flight speed is determined assuming cruising at a constant altitude. The optimization criterion corresponds to the minimization of a functional representing the trade-off between the cost of hydrogen fuel and time-dependent costs, which are related by a parameter denoted by cost index. The value of this parameter is introduced by a pilot into the Flight Management S…

Predictive energy management for hybrid electric aircraft propulsion systems

We present a Model Predictive Control (MPC) algorithm for energy management in aircraft with hybrid electric propulsion systems consisting of gas turbine and electric motor components. Series and parallel configurations are considered. By combining a point-mass aircraft dynamical model with models of electrical losses and losses in the gas turbine, the fuel consumed over a given future flight path is minimised subject to constraints on the battery, electric motor and gas turbine. The optimization is formulated as a convex problem under mild assumptions and its solution is used to define a pred…

To charge in-flight or not: an inquiry into parallel-hybrid electric aircraft configurations via optimal control

We examine two configurations for parallel hybrid electric aircraft, one with, and one without, a mechanical connection between the engines and the electric motors. For this two designs, we then review the power allocation problem in the context of aircraft energy management for a 19-seat conceptual Hybrid Electric Aircraft. We then represent the original optimal control problem as a finite-dimensional optimization and validate the second-order sufficient conditions for global optimality of the obtained solution. This is then followed by a sensitivity analysis of the fuel consumption on the in…

军用飞机机队多年期管理的混合整数优化

Mixed-integer optimization for multi-year military aircraft fleet management

针对国防领域飞行与维修规划中的非理想条件，提出一种混合整数多年期规划策略，通过多目标优化、滚动时域、贝叶斯调参及飞机特定加权，最大化机队长期可用性，并在三个基准场景中验证有效性。

Trajectory Planning of Weakly Supervised Aircraft

In this paper, we propose a novel framework of air traffic management (ATM). The framework is in particular characterized by the trajectory planning of weakly supervised aircraft; the air traffic control (ATC) does not completely determine the trajectory of each aircraft unlike conventional planning methods, but determines allowable safe sets of trajectories. ATC requests pilots to select their own trajectories from the sets, and the pilots determine ones by pursuing their own aims. For example, the selection can be based on pilot preferences and airline strategies. This two stage ATM system c…

加拿大国内航班的电动飞机优化部署

Optimal Deployment of Electric Aircraft for Canadian Domestic Flights

提出多周期混合整数线性规划框架，联合优化机队、基础设施和服务分配，以加拿大Helijet短途网络为例，表明电动化可在五年内减排超70%且经济可行，但受机队容量限制导致需求未满足。