Worgav · Ballistic Instrument
Armor vs. Projectile — Johnson-regime resolver
Φ = ρₚv²/Rₜ selects the regime · sec θ obliquity · Recht–Ipson energy split
Engagement
Projectile
Nose shape
Projectile material
Striking velocity · m/s (blank = default)
Armor material
Plate thickness · mm
Obliquity θ · 0°
Constraint
Cap by
Weight — areal density (kg/m²)
Cost — budget (rel. units)
Max areal density · kg/m²
Anchors — 7.62 AP @ 850 m/s ≈ 10 mm RHA @ 0° · 120 mm APFSDS ≈ 600 mm RHA. If a result lands far off, check R_t first.