CASA-25: Variable Bypass Turbofan

Engine for Supersonic Business Jet

Awarded First in International AIAA/ASME Design Competition

Problem: Design a supersonic variable bypass turbofan for future supersonic business jet

Final Design: Dual spool mix flow low bypass ratio variable cycle turbofan. Huge leap in performance with lower emission and noise level. Design included: Helmhotz resonators and piezo-ceramic actuators, titanium LE and composite fan blades, active blade tip clearance, patented lobe mixer and variable C-D nozzle

Spring 2014 Adrian Lee

J.E.T.T. Jayhawk Economical Turboprop

TransportFirst in International AIAA Design Competition

Overview: Proposal design for future turboprop-powered passenger aircraft

Design features: • Shrouded turboprop for reduce noise

• Wind-fold mechanism allowing wing span extension (increase aspect ratio) for fuel saving

• Pressure adaptive honeycomb structures and Prandtl-Tailored wingtips for weight and drag reduction

J.E.T.T. on NX Unigraphics

STAMPED Power and Wing LoadingSpring 2014 Adrian Lee

Bio-Inspired Airspeed

SensorProblem: Design an airspeed sensor for high angles of attack and sideslip use, suitable for UAVs.

Solution: Inspired from the Peregrin Falcon’s nose, an airspeed probe prototype was manufactured and wind tunnel tested with optimistic results.

The Bio-Inspired airspeed sensor is currently undergoing flight testing and design adjustment for final product manufacturing.

Preliminary airspeed sensor design

3D illustration of design concepts on Solidworks.

3D printed prototypes using polycarbonate for wind tunnel testFall 2014 to Summer 2016 Adrian Lee