Encapsulator CS-111
The Same Round Behind the Bulkhead.
A Bay That Opens in Front of It.
Encapsulator CS-111 is Goose with a nose that catches instead of one that collides. Everything from the tail fins forward to the nose bulkhead is CS-110, unchanged, and that is a constraint being held rather than a coincidence.
Mass, bore, exit velocity and magazine pitch are held identical to the lead round: 1.6 kg all-up, Ø90 mm across 63.6 cm², about 189 m/s at the muzzle. That is what lets the two index in one magazine, so a launch position is not a position for one round or the other.
Forward of the bulkhead is a bay about 180 mm long and about Ø80 mm internally: 50.3 cm² in section, about 0.90 L, and 0.90 kg of mass to work with once hull, tail and fins have taken their 0.65 kg. Whatever goes in there rides about 607 g mean over roughly 32 ms: about 5.4 kN, about 546 kgf, into the nose bulkhead, and about 11.8 bar at the base of a 180 mm liquid column.
Two consequences follow from that. The payload self-pressurizes for the stroke, so a pressure-triggered release is a contradiction and the release has to be a positive mechanical action. And free-expanding chemistry runs a thousand to three thousand times too slowly for the window, so the medium is stored cold gas: about 100 cm³ at about 200 bar through a choked throat of about Ø11.5 mm, filling at airbag class, about 2,400 L/s, inside a 5.0 ms window.
The effect is rotor fouling. Enveloping a 600 mm quadcopter outright would want about 113 L of foam or about 4.1 kg of liquid, roughly 4.6× the entire round, so the achievable effect is localized: foul one or two rotors, unbalance the disc, and the target comes down intact. Because the release is timed against an observed closing geometry, fibre is the recommended primary tier here. The arithmetic in full is on Encapsulator CS-111.