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Advanced Temperature Control in Aircraft Cabins - A Digital Prototype

Pollok, Alexander (2017) Advanced Temperature Control in Aircraft Cabins - A Digital Prototype. SAE AeroTech Congress and Exhibition, Fort Worth, USA.

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Official URL: http://papers.sae.org/2017-01-2161/

Abstract

For thermal cabin control of commercial aircraft, the cabin is usually divided into a small number of temperature zones. Each zone features its own air supply pipe. The necessary installation space for ducting increases significantly with the number of zones. This requires the number of temperature zones to be low. Factors such as seating layout, galley placement and passenger density result in deviations in heat flux throughout the cabin. These deviations cannot be compensated by the control system, if they occur within the same temperature zone. This work presents a novel temperature regulation concept based on local mixing. In this concept, two main ducts span the complete cabin length, and provide moderately warm and cold air. At each temperature zone, cabin supply air is locally mixed using butterfly valves. In this way, the number of temperature zones can be individually scaled up without any additional ducting, only requiring additional valves for each temperature zone. The access to hot trim air at the site of the mixing chamber can therefore be omitted. The advantages of this concept are bought at the expense of a more complex control system and a more sophisticated management of failure modes. Pneumatic coupling between temperature zones is much more pronounced compared with the traditional architecture. A centralized control architecture is required. A prototype architecture is presented, as well as a corresponding control system candidate. Possible strategies for the handling of failure modes are discussed. High fidelity simulations using the object-oriented equation-based modelling language Modelica are used to demonstrate robust performance under a wide range of boundary conditions.

Item URL in elib:https://elib.dlr.de/114961/
Document Type:Conference or Workshop Item (Speech)
Title:Advanced Temperature Control in Aircraft Cabins - A Digital Prototype
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pollok, Alexanderalexander.pollok (at) dlr.deUNSPECIFIED
Date:2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:-
Event Title:SAE AeroTech Congress and Exhibition
Event Location:Fort Worth, USA
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Pollok, Dipl.-Ing. Alexander
Deposited On:06 Nov 2017 13:04
Last Modified:06 Nov 2017 13:04

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