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Autonomous Adhesive Denial Drone AADD-2 'Barnacle'

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Zheng-Dao Heavy Industries Siege Mortar SM-8 'Tremor'

A man-portable smart mortar system that fires programmable munitions to a maximum range of 800 meters with GPS-guided precision. The SM-8 weighs 12 kg fully loaded and can be set up and fired by a single operator in under 30 seconds. Each round carries a modular warhead that can be configured before loading — high explosive, smoke, illumination, or Zheng-Dao's signature seismic charge that buries itself 2 meters into the ground before detonating, creating a localized earthquake effect that collapses underground structures and disrupts foundations.

name

Zheng-Dao Heavy Industries Siege Mortar SM-8 'Tremor'

aliases

Tremor
SM-8
Mini Mortar
The Shaker

category

explosive

manufacturer

ZHENG-DAO HEAVY INDUSTRIES

tier availability

Tier 5

legality

Military restricted — active combat authorization only

base technologies

Programmable modular warhead architecture
GPS-guided mortar precision
Seismic detonation charge engineering

specifications

caliber: 60mm programmable munition
maximum range: 800 meters
minimum range: 50 meters
warhead options: HE, smoke, illumination, seismic
magazine: 4 rounds in autoloader
weight: 12 kg total system
setup time: 25 seconds to first round
guidance: GPS with inertial backup

story hooks

Seismic mortar rounds have been used to collapse tunnel networks under a disputed territory — but the tunnels contained a refugee community that nobody knew about.
A single SM-8 system has gone missing from a Zheng-Dao armory and the serial numbers on mortar impacts across three incidents all match the same launcher.

related entities

Brecken Yılmaz-Osei
Cezar Watanabe-Gyasi
Narrowcast
Nika Svensson-Kone
TESSERA PG-2 'Signature'
Zheng-Dao Heavy Industries Resonance Hammer RH-3 'Earthquake'
Zheng-dao Bioelectric

physical description

visual profile	A compact, angular mortar system with a distinctly utilitarian brutalism—short barrel angled upward at roughly 45 degrees, mounted on a rigid tripod base with splayed legs. The silhouette reads 'portable siege weapon' rather than elegant; all function, minimal ornamentation. Heavy industrial aesthetic with sharp edges and exposed mechanical complexity.
dimensions	Barrel length: 38 cm. Overall height (mounted): 62 cm. Tripod spread: 48 cm × 52 cm. System footprint approximately 50 cm × 55 cm when deployed.
weight description	Hefty and dense—12 kg total feels substantial but manageable for a trained operator. The weight is low-slung in the tripod base, creating stable balance. Front-heavy when shouldering the barrel section; designed for braced firing positions, not hip-shooting.
primary material	Reinforced carbon-composite barrel sleeve over steel core. Tripod frame is welded high-tensile steel with composite leg bracing. Autoloader housing: titanium-alloy with integrated circuit panels.
finish	Matte industrial grey with localized burnished steel wear at mechanical joints. Barrel exhibits light oxidation and micro-scoring from firing residue—combat-functional, not polished. Polymer components show slight heat discoloration near the breech.
color scheme	Battleship grey primary, with accent steel and darker carbon-black polymer sections. Pale yellow safety markers on tripod leg locks and autoloader access panel. Minimal branding—stainless steel data plate mounted on autoloader housing.
grip texture	Rubberized overmold on barrel traverse handles—tactile, engineered for gloved operation. Tripod leg locks feature knurled steel knobs. Autoloader magazine interface is smooth anodized aluminum with subtle grip ridges.
distinctive features	Digital readout display mounted on right side of autoloader housing—small LCD showing GPS coordinates, selected warhead type, and round count Heat dissipation vents cut into barrel sleeve in staggered patterns Visible autoloader mechanism with 4-round cartridge staging visible through inspection ports GPS antenna array mounted as small rake of black composite spines atop the breech assembly Calibration screw points marked with paint witness marks indicating previous zeroing Exhaust port with directional blast deflector angled downward to minimize operator backblast exposure Cable routing for inertial guidance system visible along tripod spine to stabilizer pods
manufacturer markings	ZHENG-DAO HEAVY INDUSTRIES stamped in sans-serif block letters on titanium nameplate mounted to autoloader housing, upper left. Serial number etched below in smaller font. Ballistic coefficient and caliber specification stenciled in faded white on barrel in Mandarin and English.
condition typical	Field-worn but meticulously maintained. No rust, mechanisms responsive and oiled. Polymer shows scuff marks and minor blast char near vents. Paint on tripod base chipped in high-contact areas. Display screen is clean—suggests active operator who understands their equipment. Autoloader cartridge ports show residual powder residue.

image prompt

Product photography of the Zheng-Dao SM-8 'Tremor' siege mortar system mounted on tripod, photographed from low 3/4 angle against matte black background. Dramatic side-lighting from upper left creates sharp shadows across barrel and tripod geometry. Neo-noir urban aesthetic: accent lighting (pale blue LED glow) on the digital readout display and GPS antenna array. Gloved operator hand in frame adjusting barrel traverse, showing rugged tactical glove texture. Emphasize cold industrial materiality—steel, carbon composite, anodized aluminum. Slight heat distortion shimmer near exhaust port. Shallow depth of field with focus on breech mechanism and autoloader housing details. Cinematic, cold-toned color grade. --ar 3:2 --v 6

visual prompt