Hongsik Im

Supersonic Bi-Directional Flying Wing, Part II: Conceptual Design of A High Speed Civil Transport

Daniel Espinal, Gecheng Zha, Gecheng Zha, 2010 .

Full-Annulus Simulation of Non-Synchronous Blade Vibration of an Axial Compressor

Gecheng Zha, Daniel A. Espinal, Hongsik Im, 2014 .

Toward Zero Sonic-Boom and High Efficiency Supersonic Flight, Part I: A Novel Concept of Supersonic Bi-Directional Flying Wing

Daniel Espinal, Gecheng Zha, Gecheng Zha, 2010 .