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Method for the Pre-Design of a Smart Droop Nose using a Simplex Optimization Scheme

Kintscher, Markus (2009) Method for the Pre-Design of a Smart Droop Nose using a Simplex Optimization Scheme. SAE Aerotech Congress and Exhibition, 10.-12. November 2009, Seattle, Washington, USA.

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Abstract

The high lift systems of modern-day commercial airplanes are highly effective systems providing the required lift during take-off and approach at low flight velocities. State-of-the-art high lift systems consist of movable control surfaces which when deployed increase high lift performance. Typical devices are slats and fowler flaps which consist of rigid parts supported and driven by complex mechanical systems. To achieve the goals defined in the “Vision 2020”, technologies to consequently reduce drag and airframe noise will be necessary. In this context especially the high lift systems at the leading edge are of major interest. Most experts agree that laminarisation is the only technology which has the potential for step changes in drag reduction within a suitable ti-meframe. But this technology requires high quality surfaces and does not comply with conventional high lift devices like slats. Because of the gap which forms between the slat and the main wing the flow is disturbed and causes transition to turbulent flow immediately after the slat gap. Additionally, the construction space in the next generation high aspect ratio wings is limited due to the employ-ment of slim profiles. Furthermore in recent research programs the slat gap is identified to be one of the most dominant airframe noise sources in take-off and approach. Therefore smart seamless and gapless high lift devices especially at the wings leading edge are a mandatory enabler for futu-re wings of significantly increased aerodynamic efficiency. In the european project SADE and the national project SmartLED gap- and seamless high lift devices for next generation wings are de-signed. The work presented is based on the initial design of an adaptive leading edge device in these projects and focused on the optimization of such a system regarding issues of shape accura-cy in cruise flight as well as in approach and strength requirements.

Item URL in elib:https://elib.dlr.de/63642/
Document Type:Conference or Workshop Item (Paper)
Title:Method for the Pre-Design of a Smart Droop Nose using a Simplex Optimization Scheme
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kintscher, MarkusUNSPECIFIEDUNSPECIFIED
Date:November 2009
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:Smart Droop Nose, High Lift
Event Title:SAE Aerotech Congress and Exhibition
Event Location:Seattle, Washington, USA
Event Type:international Conference
Event Dates:10.-12. November 2009
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Ries, Doris
Deposited On:12 Mar 2010 09:18
Last Modified:12 Mar 2010 09:18

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