Fig. 1. Turret structures

Fig. 2. Schematic of computational domain (span-wise view)

Fig. 3. Contours of density in a cutting plane where y=0 at different flight speed

Fig. 4. Contours of density in a cutting plane where z=0.1875 m at different flight speed

Fig. 5. Definition of beam viewing, where AZ is the azimuthal angle, EL is the elevation angle

Fig. 6. Contours of optical path differences (OPDs) in the entire field of view at a flight speed of 0.4Ma

Fig. 7. Contours of OPDs in the entire field of view at a flight speed of 0.8Ma

Fig. 8. Contours of OPDs in the entire field of view at a flight speed of 1.5Ma

Fig. 9. OPDs at beam direction of 45° (turret Ⅱ, 0.4Ma)