直升机的特殊飞行状态,是指飞行中飞行员不 期望岀现的,由于气动特点、结构因素、飞行环境 飞行员操纵以及故障等原因引起的非正常飞行状 态 包括:涡环状态、旋翼自转下降及着陆、莢翼 失速、单发停车、驾驶员诱发振荡、尾桨失效等

Outline D Background, Motivation and our Contributions a Overview of Robust Airline Schedule Planning a Robust Aircraft Maintenance Routing -reduce delay propagation O Flight Schedule Retiming- reduce passenger missed connections

Summary Lecture #2 Achieving good passenger service reliability at an acceptable operating costs Disrupted passengers suffer long delays on average(320 minutes) versus non disrupted passengers(14 minutes) Connecting itineraries have a much higher risk of being disrupted than local itineraries(2.7x) Late disruptions are often difficult to recover the

Problem Definition and objective Network Representation String model Solution at proact Branch-and-price Extension: Combined Fleet Assignment and rcra Lft rou

The Extended Crew Pairing Problem with Aircraft Maintenance Routing Outline Review of Individual Problems Interdependence and motivation for an alternative approach Sequential Approaches Integrated Approaches Comparison of Models

1963/1.206J16.77ESD215JThe Schedule design problem Outline Problem Definition and Objective Schedule design with Constant market Share Schedule design with variable market Share Schedule design solution Algorithm Results Next Steps A Look to the Future in airline schedule optimization

Summary Lecture #1 Airline schedules (Aircraft, crew, passengers) are optimized leading to: Little slacksidle time) Schedule dependencies Delay chain effects Causes of schedule disruptions Shortages of airline resources Shortages of airport resources Complex airline resource regulations Aircraft maintenance

Outline Airline planning complexity Schedule disruptions Schedule dependability CDM Ground delay Program How do airlines recover the schedule? Traditional ARM; Model shortcomings Interdependency of passengers and aircraft operations

1.206J/16.77J/ESD.215J The Passenger Mix Problem Outline -Definitions Formulations Column and Row Generation -Solution Approach Results Applications and Extensions

1.206J/16.77J/ESD.215J The Fleet Assignment Problem Outline Problem Definition and Objective Fleet Assignment Network Representation Fleet Assignment Model Fleet Assignment Solution Branch--bound-and- Results