ASDL 연구팀에서 AIAA Journal 학술지에 투고한 논문이 2026년 6월 온라인 게재되었습니다. 축하합니다!

Title: Computational Investigation of Aero-Optic Aberrations in a Supersonic Interceptor with Lateral Jets
Author: Kwangseok Oh, Chongam Kim
Journal: AIAA Journal, Article in Advance. Published online: June 17, 2026.
DOI: 10.2514/1.J066306

Abstract:
This paper presents a computational investigation of aero-optic aberrations that arise when multiple lateral jets are
used to control a supersonic interceptor. Reynolds-averaged Navier–Stokes simulations are employed to examine the
flow structure and evaluate the effects of various parameters, including altitudes ranging from 30–50 km, angles of
attack (AOAs) from −15 to 25 deg, and four distinct jet configurations. the flow structure are analyzed by calculating
the optical path difference (OPD) and normalizing it through scale analysis. When the jet flow does not interfere with
the seeker’s field of view (FOV), the normalized OPD is predominantly governed by the bow shock and the conical
expansion region in front of the vehicle head and exhibits similar profiles along the beam path for all altitudes. When
the jet flow is introduced, the separation shock and bubble induced by jet interaction interfere with the seeker’s FOV
at altitudes over 35 km and AOAs over 15 deg. Multijet cases at 35 km show that the separation bubble blocks a larger
portion of the seeker’s FOV and increases the normalized OPD at higher AOA as the per-jet strength increases. For
the most severe degradation case, unsteady delayed detached eddy simulation results predict a time-averaged
normalized OPD that is about 20% larger than the steady-state counterpart.