Gun Turrets of XP-35 Figure 92 Streamlined Martin Top Turret. B-33 Vega Turrets. Test conducted in the NACA 19 foot pressure tunnel LMAL-38560 NACA document.
Detail Shots of B-32 Turret Figure 4. Upper turrets, Martin A-3D, Two .50 Caliber guns. Test conducted in the NACA 19 foot pressure tunnel LMAL-38560 NACA document.