bionic surface technologies gmbhperformance entscheidet über … · 2019. 7. 5. · • zivko edge...
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www.bionicsurface.com [email protected]
+43 650 922 2907
bionic surface technologies GmbH Liebenauer Hauptstraße 2-6 8041 Graz AUSTRIA The content and all parts of this document are protected by copyright.
Copyright © by bionic surface technologies GmbH
Luftfahrt
Aerodynamische CFD-Optimierung eines Rennflugzeuges Performance entscheidet über Sieg oder Niederlage:
Ergebnisse : • Gesteigerte Höchstgeschwindigkeit • Kostensparende Umsetzbarkeit der Optimierung• Erster europäischer Sieger in der Geschichte des
„Reno Airrace“ in der „Formula One“ – Klasse in Nevada
Aufgaben: • Berechnung der Strömungsverhältnisse am
Flugzeug • Auswertung der Widerstandswerte der einzelnen
Bauteile und Visualisierung von Optimierungspotential
• Auswertung von Grenzschichtumschlag und Profilströmung am 2D Modell
• Verbesserungsvorschläge aus 3DRechenergebnissen
• Optimierung der Kabinengeometrie sowie derMotorabdeckung
• Berechnung UTM ( underhood thermalmanagement )
• Performancevergleich von 3 Ausführungsvariantendes Gesamtflugzeuges
• Berechnung des Optimierungspotentials durchspezielle Ribletoberflächengeometrie
Netzeigenschaften / Lösungsmethodik: • Grenzschichtauflösung • Berechnung der Transition (Übergang von
laminaren zu turbulenten Strömungsverhältnissen) • Es wird eine Momentaufnahme des Flugzustandes
betrachtet. Der Propeller wird mittels MRF (moving reference frame) abgebildet
Besonderheiten: • Ausstattung eines Wettbewerbsflugzeuges mit
strömungsoptimierter und exakt ausgelegter Oberflächengeometrie ( Ribletstruktur )
Bild 2: Druckverlauf und Geometrieoptimierung
Bild 1: Cowlingdesign
bionic surface technologies GmbH – Brockmanngasse 49 – 8010 Graz – [email protected] - Phone +43 650 922 2907
The content and all parts of this document are protected by copyright.Copyright © 2009-2014 by bionic surface technologies GmbH
More speed and performance with bionic surface
Bionic surface technologies GmbH• Is an independent engineering and high tech R&D company
• Develops surfaces for drag reduction in fluid dynamic applications
• Is a specialist for flow calculations in a broad range of industries
• Provides high end CFD-analysis
• Provides Aerodesign for Race planes
• Equips wind turbines, air planes and race cars with riblet surfaces
Riblet surfaces (shark skin) improve aerodynamic performance
• Riblets are micro- and nanostructured grooves, which are aligned with
the direction of flow. Exactly designed riblets reduce the viscous drag
within the turbulent boundary layer up to 8 %.
Advantages by usage of bionic surface riblets in Airrace• Riblets generate more lift at same cW value
• Functionality at a broad range of speed
• Proved by wind tunnel, racetrack tests and races (racecar)
• Proved at airrace planes
• Zivko Edge 540 V3, Red Bull Airrace – 1,56% faster
• Cassutt “Scarlett Screamer”, Reno Airrace – 1,58% faster
• The riblets are transparent and doesn´t affect the sponsor design
Project phases for usage of riblets• 3D CFD simulation (1:1 scale) at typical operating points to get exact
layout of riblet structure and advantages at operating points
• Flight tests with riblet surface at operating points (aircraft layout,
stability analyses)
• Race it. Win with it.
Airrace
Aerodesign Cowling Design (incl.engine inlets and oil cooling
system) – 7,74% more efficiency
new landing gear design –10% drag reduction (equal to
1HP more power)
Shark Skin design: e.g. Renorace (NV, US) – 1,58% faster
new wingtip design – upto 10% more efficiency
Bild 3: Aufnahme kurz vor dem Rennen 2012
bionic surface technologies GmbH – Brockmanngasse 49 – 8010 Graz – [email protected] - Phone +43 650 922 2907
The content and all parts of this document are protected by copyright.Copyright © 2009-2014 by bionic surface technologies GmbH
More speed and performance with bionic surface
Bionic surface technologies GmbH• Is an independent engineering and high tech R&D company
• Develops surfaces for drag reduction in fluid dynamic applications
• Is a specialist for flow calculations in a broad range of industries
• Provides high end CFD-analysis
• Provides Aerodesign for Race planes
• Equips wind turbines, air planes and race cars with riblet surfaces
Riblet surfaces (shark skin) improve aerodynamic performance
• Riblets are micro- and nanostructured grooves, which are aligned with
the direction of flow. Exactly designed riblets reduce the viscous drag
within the turbulent boundary layer up to 8 %.
Advantages by usage of bionic surface riblets in Airrace• Riblets generate more lift at same cW value
• Functionality at a broad range of speed
• Proved by wind tunnel, racetrack tests and races (racecar)
• Proved at airrace planes
• Zivko Edge 540 V3, Red Bull Airrace – 1,56% faster
• Cassutt “Scarlett Screamer”, Reno Airrace – 1,58% faster
• The riblets are transparent and doesn´t affect the sponsor design
Project phases for usage of riblets• 3D CFD simulation (1:1 scale) at typical operating points to get exact
layout of riblet structure and advantages at operating points
• Flight tests with riblet surface at operating points (aircraft layout,
stability analyses)
• Race it. Win with it.
Airrace
Aerodesign Cowling Design (incl.engine inlets and oil cooling
system) – 7,74% more efficiency
new landing gear design –10% drag reduction (equal to
1HP more power)
Shark Skin design: e.g. Renorace (NV, US) – 1,58% faster
new wingtip design – upto 10% more efficiency