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A EROSPACE V EHICLE D ESIGN L ABORATORY Prof. Yee, Kwanjung E-mail : [email protected] Office. 302-627 Lab. 301-1213 Tel. Office. 02-880-4151 Tel. Lab. 02-880-4152 ⊳ ICING PROBLEM Below freezing temperature, super cooled liquid water droplets freeze on the aircraft surface ⊳ ROTOR AERODYNAMIC ANALYSIS Estimating helicopter performance requires large computational time, efficient CFD technique is required Aerodynamic Solver Impingement Model Thermodynamic Model Ice - Growth Model MULTI-DISCIPLINARY ROTORCRAFT DESIGN Flow filed and droplet trajectories at μ=0.075 Advance ratio Hover μ=0.2 μ=0.15 μ=0.075 Ice accretion shapes with various advance ratio Numerical & Experimental Approach Helicopter Fuselage Icing Post Doc : 1 | Ph.D. Candidate : 8 | Master Course : 9 | Researcher : 1 ABOUT LABORATORY ⊳ LAB MEMBERS ⊳ LAB INFORMATION Location: Engineering Building 301-1213 Tel: 02) 880 – 4152 Homepage: avdl.snu.ac.kr ⊳ HELICOPTER ROTOR BLADE Improvement of Aero-Acoustic performance AVIATION SAFETY DESIGN OPTIMIZATION ⊳ WAKE HAZARD AVOIDANCE Identification of ice accretion phenomenon and development of numerical simulation methods for high-speed railway vehicle Actuator Disc Method Actuator Surface Method Hybrid Method (CFD + Wake Coupling) Full CFD with structured chimera grid ⊳ PRELIMINARY ROTORCRAFT DESIGN Develop an optimization design framework for the required mission Design and test safety system of the multirotor for safe operations Fan-in-Body Tip-Jet Coaxial Winged ⊳ HCUR(HIGH-SPEED COMPOUND UNMANNED ROTORCRAFT) Conceptual design of compound rotorcraft for future warfare Input data : Design variables, Design parameters, Constraints Output data : Optimum design Two pairs of wake vortex interaction study for increasing airport capacity Wingtip Vortex Optimized components and performances for the input mission ⊳ VFS 36 TH ANNUAL STUDENT DESIGN COMPETITION (2 ND PLACE ) Conceptual design of Extreme Altitude Mountain Rescue Vehicle Distribution of supercooled droplets impingement on compound rotorcraft Ice accretion shapes on compound rotorcraft Mountain rescue vehicle concept 3D rendering Rotorcraft hub structure 3D modeling

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AEROSPACE VEHICLE DESIGN LABORATORYProf. Yee, Kwanjung

E-mail : [email protected]

Of fice. 302-627

Lab. 301-1213

Tel. Of f ice. 02-880-4151

Tel. Lab. 02-880-4152

⊳ ICING PROBLEMBelow freezing temperature, super cooled liquid water droplets

freeze on the aircraft surface

⊳ ROTOR AERODYNAMIC ANALYSISEstimating helicopter performance requires large computational time,

efficient CFD technique is required

Aerodynamic Solver

Impingement Model

Thermodynamic Model

Ice-Growth Model

MULTI-DISCIPLINARY ROTORCRAFT DESIGNFlow filed and droplet

trajectories at μ=0.075

van

ce r

atio

Hover

μ=0.2

μ=0.15

μ=0.075

Ice accretion shapes with various advance ratio

Numerical & Experimental Approach

Helicopter Fuselage Icing

Post Doc : 1 | Ph.D. Candidate : 8 | Master Course : 9 | Researcher : 1

ABOUT LABORATORY

⊳ LAB MEMBERS

⊳ LAB INFORMATIONLocation: Engineering Building 301-1213

Tel: 02) 880 – 4152Homepage: avdl.snu.ac.kr

⊳ HELICOPTER ROTOR BLADEImprovement of Aero-Acoustic performance

AVIATION SAFETY DESIGN OPTIMIZATION

⊳ WAKE HAZARD AVOIDANCE

Identification of ice accretion phenomenon and development of numerical simulation methods for high-speed railway vehicle

Actuator Disc Method Actuator Surface MethodHybrid Method(CFD + Wake Coupling)

Full CFD with structured chimera grid

⊳ PRELIMINARY ROTORCRAFT DESIGN Develop an optimization design framework for the required mission

Design and test safety system of the multirotor for safe operations

Fan-in-Body

Tip-Jet Coaxial

Winged

⊳ HCUR(HIGH-SPEED COMPOUND UNMANNED ROTORCRAFT)Conceptual design of compound rotorcraft for future warfare

Input data : Design variables, Design parameters, Constraints Output data : Optimum design

Two pairs of wake vortex interaction study for

increasing airport capacityWingtip Vortex

Optimized components and performances for the input mission

⊳ VFS 36TH ANNUAL STUDENT DESIGN COMPETITION (2ND PLACE )Conceptual design of Extreme Altitude Mountain Rescue Vehicle

Distribution of supercooled droplets impingement on compound rotorcraft

Ice accretion shapes on compound rotorcraft

Mountain rescue vehicle concept 3D rendering Rotorcraft hub structure 3D modeling

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