Airports

Baggage Claim Area Congestion at Airports: An Empirical Model of Mechanized Claim Device Performance

Ghobrial, Atef
Carlos Daganzo
Kazimi, Tarif
1982

Although baggage handling is a major airport expense and congestion of luggage claim areas is quite common, knowledge of how baggage claim devices perform their task under congested conditions is virtually nonexistent. In order to bridge this gap this paper describes a model that, for different demand conditions, can predict the performance of a claim device depending on its characteristics. The demand conditions considered include aircraft size, lag between arrival of passengers and bags, and the fraction of passengers that transfer. The characteristics of the claim device that affect...

On the Coordination of Inbound and Ooutbound Schedules at Transportation Terminals

Carlos Daganzo
1990

Centralized Hub‐Terminal Geometric Concepts. II: Baggage and Extensions

Robusté, Francesc
Carlos Daganzo
1991

This paper shows how the geometric concepts examined in the first paper perform for baggage operations, recognizing that passengers and bags travel different distances through the airport. The paper shows that the most effective geometry (minimizing
...

Analysis of Baggage Sorting Schemes for Containerized Aircraft

Robusté, Francesc
Carlos Daganzo
1992

Baggage transfer is a critical factor in determining connecting schedules at hub airports. This paper examines the potential benefits of “ramp transfers”-bags that bypass the hub sorting facility because they have been presorted at their point of origin. It presents three idealized baggage presorting strategies for containerized (wide-bodied) aircraft. These strategies are compared under a range of conditions, and are then integrated in a computer tool that can handle more complex problems. Presorting baggage at the origin by final destinations or groups of final destinations may be...

Reversibility of the Time-Dependent Shortest Path Problem

Carlos Daganzo
1998

Time-dependent shortest path problems arise in a variety of applications; e.g., dynamic traffic assignment (DTA), network control, automobile driver guidance, ship routing and airplane dispatching. In the majority of cases one seeks the cheapest (least generalized cost) or quickest route between an origin and a destination for a given time of departure. This is the "forward" shortest path problem. In some applications, however, e.g., when dispatching airplanes from airports and in DTA versions of the "morning commute problem", one seeks the cheapest or quickest routes for a given arrival...

A Resource Allocation Algorithm for Multivehicle Systems With Nonholonomic Constraints

Rathinam, Sivakumar
Raja Sengupta
Darbha, Swaroop
2007

This paper is about the allocation of tours of m targets to n vehicles. The motion of the vehicles satisfies a nonholonomic constraint (i.e., the yaw rate of the vehicle is bounded). Each target is to be visited by one and only one vehicle. Given a set of targets and the yaw rate constraints on the vehicles, the problem addressed in this paper is 1) to assign each vehicle a sequence of targets to visit, and 2) to find a feasible path for each vehicle that passes through the assigned targets with a requirement that the vehicle returns to its initial position. The heading angle at each...

Target detection and position likelihood using an aerial image sensor

Kim, Zuwhan
Raja Sengupta
2008

Sensor-based control is an emerging challenge in UAV applications. It is essential in a sensing task to account for sensor measurement errors when computing a target position estimate. Source of measurement error includes those in vehicle position and orientation measurements as well as algorithm failures such as missed detections or false detections. Incorporating such errors in aerial sensors is non-trival because of the camera’s perspective geometry. This paper is about a method to incorporate such errors into target position estimates and a calibration methodology to measure the error...

An Energy-Based Flight Planning System for Unmanned Traffic Management

Liu, Zhilong
Raja Sengupta
2017

In this paper, we proposed an energy-based flight planning system for Unmanned Aircraft Systems (UAS) Traffic Management (UTM). Fuel consumption estimation at the flight planning stage is safety critical in general aviation, because energy-related failures are often life-threatening. However, conservative fuel estimation is not economical and environmentally friendly because carrying unnecessary fuel load burns a lot of extra fuel. The same reasoning holds in UTM. Aviation researchers are actively working on optimizing fuel loading, but such research is lacking in UTM. In this paper, we...

Cooperative and Non-Cooperative UAS Traffic Volumes

Bulusu, Vishwanath
Raja Sengupta
Polishchuk, Valentin
Sedov, Leonid
2017

We describe an analytical process to determine how much UAS traffic is feasible. The process is a simulator and data processing tools. The two are applied to the US San Francisco Bay Area and Norrkoping, Sweden. The amount of UAS traffic is measured in flights per day and simulated up to 200,000 flights. A UAS traffic volume is feasible if specified metrics meet operational requirements with high probability and are stable, in the sense of being below thresholds observed for monotone properties in random geometric graphs. We focus on conflict cluster size and argue for it as a fundamental...

A Power Consumption Model for Multi-Rotor Small Unmanned Aircraft Systems

Liu, Zhilong
Raja Sengupta
Kurzhanskiy, Alex
2017

We develop a theoretical power consumption model for multi-rotor Unmanned Aircraft Systems (UAS), estimate the model parameters, and validate it by flying an IRIS+ quadrotor UAS and measuring its energy consumption experimentally. The model is derived from the helicopter literature. Such models are required to create UAS flight planning systems.