www.bionicsurface.com info@bionicsurface.com

+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 – AUSTRIAinfo@bionicsurface.com - 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 – AUSTRIAinfo@bionicsurface.com - 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