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Review of ADS-33E Requirements for Helicopter Control Augmentation in Degraded Visual Environments

Schönenberg, Thorben (2008) Review of ADS-33E Requirements for Helicopter Control Augmentation in Degraded Visual Environments. Other. DLR-IB 111-2008/17, 12 S.

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Helicopters are increasingly required to operate independently of environmental conditions. However, in degraded visual environments (DVE), for example, night or bad weather, handling qualities will be corrupted. This issue has been a focus in the development of the US Army helicopter handling qualities specification ADS-33. An overview of the specification structure is given and the process of tailoring this generic specification for a particular helicopter is explained. The usable cue environment as combined metric of visual environment and pilot vision aids and displays is introduced and the evaluation process explained. Following ADS-33, reduced visual cues can be compensated for with increased stability augmentation. The character of the stabilization is described in terms of response types, as rate or attitude command. The criteria and requirements of ADS-33 define the dynamic properties of the different response types. This is why ADS-33 is a true functional requirement for the flight control system and should be used throughout the control law design process. Not addressed in ADS-33 is the issue of guidance in DVE. Still being subject of current research, a possible approach to this problem is outlined.

Item URL in elib:https://elib.dlr.de/55103/
Document Type:Monograph (Other)
Title:Review of ADS-33E Requirements for Helicopter Control Augmentation in Degraded Visual Environments
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:July 2008
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:12
Keywords:handling qualities, helicopter, ADS-33, degraded visual environment, usable cue environment, response type, stability augmentation, flight control system, night vision device, pilot vision aid
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - The Smart Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Schönenberg, Thorben
Deposited On:13 Oct 2008
Last Modified:27 Apr 2009 15:11

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