Tiberius Aerospace Reveals Sceptre TRBM 155HG A New Ramjet Artillery Round for Precision Strikes up to 150 km
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On May 19, 2025, Tiberius Aerospace officially unveiled its first defense product, the Sceptre TRBM 155HG, a 155mm ramjet-powered artillery round designed for long-range precision strike missions up to 150 km. This high-precision munition was revealed during the Future Artillery conference in London, marking the emergence of Tiberius from stealth. In a defense environment defined by range, precision, and cost-efficiency, Sceptre’s debut is significant: it offers a disruptive solution for NATO-standard howitzers at a fraction of the cost of existing systems. With peer threats intensifying and battlefield survivability becoming harder to guarantee, artillery that can reach deep targets from beyond the enemy’s strike envelope is increasingly vital.Follow Army Recognition on Google News at this link
Sceptre TRBM 155HG marks a transformational moment in long-range artillery warfare, offering NATO and allied forces an agile, modular, and cost-effective deep-strike capability (Picture source: Tiberius)
The Sceptre TRBM 155HG is a 155mm precision-guided ramjet artillery munition capable of delivering surgical strikes at distances between 140 and 160 km. Launched from conventional NATO-standard tube artillery systems, the munition uses a liquid-fueled ramjet propulsion system that activates just after barrel exit, allowing it to reach speeds up to Mach 3.5 and altitudes above 65,000 feet. A ramjet is an air-breathing engine that compresses incoming air without moving parts, using the munition’s high speed to sustain combustion and generate continuous thrust throughout its flight. This high-altitude trajectory limits susceptibility to GPS jamming and electronic warfare. Featuring a circular error probability (CEP) of under 5 meters, even in GPS-contested environments, Sceptre incorporates a hybrid GPS/inertial guidance package, AI-enhanced targeting correction, and an in-flight data-link for swarm coordination. The munition passes through standard trajectory phases, barrel launch, ramjet ignition, mid-course telemetry update, active guidance correction, and final descent, culminating in precision detonation via a programmable fuze. Operational development was rapid, with test firings already underway in the United States, applying a Silicon Valley-style continuous integration model.
Strategically, Sceptre positions itself as a credible alternative to more costly and logistically burdensome systems such as the ER GMLRS or the Long-Range Maneuvering Projectile (LRMP) from General Atomics. While ER GMLRS can reach similar ranges (150 km), it must be launched from bespoke MLRS/HIMARS platforms and carries a much heavier warhead (90 kg vs. Sceptre’s 5.2 kg), making it unsuitable for more precise, low-collateral strikes. LRMP, while designed for 120 km strikes from conventional guns, lacks the ramjet propulsion that gives Sceptre its extended range and high-speed terminal trajectory.
Another comparable system, Nammo’s 155 mm ramjet round developed in cooperation with Boeing, also seeks to integrate missile-like range into tube artillery. However, it uses solid-fuel propulsion, which limits flexibility in fueling logistics and shelf life compared to Sceptre’s liquid-fueled design. While Nammo’s solution is tailored for the U.S. Army’s XM1155 program with a more traditional defense-industrial development approach, Sceptre leverages a modular, Silicon Valley-inspired model that enables faster iteration, integration, and export adaptability. Unlike classic artillery shells limited to 24–30 km and with CEPs over 100 meters, Sceptre enables deep, accurate engagements with logistical simplicity. In terms of industrial model, Sceptre exemplifies a growing defense sector trend where modularity, rapid prototyping, and open architectures are prioritized, akin to innovations seen with firms like Anduril and Helsing. The system supports local production models to reduce dependency, aligning with NATO goals for sovereign capability development.
Geopolitically, Sceptre reshapes the calculus for deep fires by offering a scalable, cost-effective alternative to expensive air or missile-delivered munitions. Its deployment supports deterrence by denying sanctuary to adversary command, logistics, and radar systems far behind the frontline. By reducing reliance on airpower for deep strike, it also mitigates risks posed by increasingly effective long-range air defenses from adversaries like China and Russia. Militarily, it empowers brigade and divisional commanders with immediate precision strike options while complicating enemy counter-battery and logistics planning.
From budgetary perspective, the cost differential is stark: Sceptre is priced at less than 10% of a standard GMLRS round. With Excalibur GPS-guided shells estimated at $100,000 per unit and GMLRS often exceeding $160,000, and sometimes up to $500,000 for ER variants, Sceptre’s price-performance ratio is designed for scale. Its low part count (only 25 unique components), in-field fueling, and 20-year storage potential significantly reduce lifecycle costs and logistics burdens. Tiberius’s development model combines public-private funding, with private capital providing most of the investment and government support used to unlock system qualification processes. Although no official contracts have been announced, ongoing test campaigns and the public debut at Future Artillery 2025 signal readiness for initial procurement by U.S. and allied forces. The system’s design also accommodates licensing or co-production agreements, potentially opening doors for defense-industrial participation from partner countries.
Sceptre TRBM 155HG marks a transformational moment in long-range artillery warfare, offering NATO and allied forces an agile, modular, and cost-effective deep-strike capability. By merging Silicon Valley innovation cycles with military-grade engineering, Tiberius Aerospace brings to the battlefield a system that balances affordability, precision, and survivability. As adversaries improve their air defense networks and GPS denial techniques, ground-launched guided munitions like Sceptre offer credible alternatives that reduce risk while maintaining operational reach. In the broader landscape of strategic deterrence and contested logistics, Sceptre could redefine how Western forces think about mass, maneuver, and munitions in the decades to come.
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On May 19, 2025, Tiberius Aerospace officially unveiled its first defense product, the Sceptre TRBM 155HG, a 155mm ramjet-powered artillery round designed for long-range precision strike missions up to 150 km. This high-precision munition was revealed during the Future Artillery conference in London, marking the emergence of Tiberius from stealth. In a defense environment defined by range, precision, and cost-efficiency, Sceptre’s debut is significant: it offers a disruptive solution for NATO-standard howitzers at a fraction of the cost of existing systems. With peer threats intensifying and battlefield survivability becoming harder to guarantee, artillery that can reach deep targets from beyond the enemy’s strike envelope is increasingly vital.
Follow Army Recognition on Google News at this link
Sceptre TRBM 155HG marks a transformational moment in long-range artillery warfare, offering NATO and allied forces an agile, modular, and cost-effective deep-strike capability (Picture source: Tiberius)
The Sceptre TRBM 155HG is a 155mm precision-guided ramjet artillery munition capable of delivering surgical strikes at distances between 140 and 160 km. Launched from conventional NATO-standard tube artillery systems, the munition uses a liquid-fueled ramjet propulsion system that activates just after barrel exit, allowing it to reach speeds up to Mach 3.5 and altitudes above 65,000 feet. A ramjet is an air-breathing engine that compresses incoming air without moving parts, using the munition’s high speed to sustain combustion and generate continuous thrust throughout its flight. This high-altitude trajectory limits susceptibility to GPS jamming and electronic warfare. Featuring a circular error probability (CEP) of under 5 meters, even in GPS-contested environments, Sceptre incorporates a hybrid GPS/inertial guidance package, AI-enhanced targeting correction, and an in-flight data-link for swarm coordination. The munition passes through standard trajectory phases, barrel launch, ramjet ignition, mid-course telemetry update, active guidance correction, and final descent, culminating in precision detonation via a programmable fuze. Operational development was rapid, with test firings already underway in the United States, applying a Silicon Valley-style continuous integration model.
Strategically, Sceptre positions itself as a credible alternative to more costly and logistically burdensome systems such as the ER GMLRS or the Long-Range Maneuvering Projectile (LRMP) from General Atomics. While ER GMLRS can reach similar ranges (150 km), it must be launched from bespoke MLRS/HIMARS platforms and carries a much heavier warhead (90 kg vs. Sceptre’s 5.2 kg), making it unsuitable for more precise, low-collateral strikes. LRMP, while designed for 120 km strikes from conventional guns, lacks the ramjet propulsion that gives Sceptre its extended range and high-speed terminal trajectory.
Another comparable system, Nammo’s 155 mm ramjet round developed in cooperation with Boeing, also seeks to integrate missile-like range into tube artillery. However, it uses solid-fuel propulsion, which limits flexibility in fueling logistics and shelf life compared to Sceptre’s liquid-fueled design. While Nammo’s solution is tailored for the U.S. Army’s XM1155 program with a more traditional defense-industrial development approach, Sceptre leverages a modular, Silicon Valley-inspired model that enables faster iteration, integration, and export adaptability. Unlike classic artillery shells limited to 24–30 km and with CEPs over 100 meters, Sceptre enables deep, accurate engagements with logistical simplicity. In terms of industrial model, Sceptre exemplifies a growing defense sector trend where modularity, rapid prototyping, and open architectures are prioritized, akin to innovations seen with firms like Anduril and Helsing. The system supports local production models to reduce dependency, aligning with NATO goals for sovereign capability development.
Geopolitically, Sceptre reshapes the calculus for deep fires by offering a scalable, cost-effective alternative to expensive air or missile-delivered munitions. Its deployment supports deterrence by denying sanctuary to adversary command, logistics, and radar systems far behind the frontline. By reducing reliance on airpower for deep strike, it also mitigates risks posed by increasingly effective long-range air defenses from adversaries like China and Russia. Militarily, it empowers brigade and divisional commanders with immediate precision strike options while complicating enemy counter-battery and logistics planning.
From budgetary perspective, the cost differential is stark: Sceptre is priced at less than 10% of a standard GMLRS round. With Excalibur GPS-guided shells estimated at $100,000 per unit and GMLRS often exceeding $160,000, and sometimes up to $500,000 for ER variants, Sceptre’s price-performance ratio is designed for scale. Its low part count (only 25 unique components), in-field fueling, and 20-year storage potential significantly reduce lifecycle costs and logistics burdens. Tiberius’s development model combines public-private funding, with private capital providing most of the investment and government support used to unlock system qualification processes. Although no official contracts have been announced, ongoing test campaigns and the public debut at Future Artillery 2025 signal readiness for initial procurement by U.S. and allied forces. The system’s design also accommodates licensing or co-production agreements, potentially opening doors for defense-industrial participation from partner countries.
Sceptre TRBM 155HG marks a transformational moment in long-range artillery warfare, offering NATO and allied forces an agile, modular, and cost-effective deep-strike capability. By merging Silicon Valley innovation cycles with military-grade engineering, Tiberius Aerospace brings to the battlefield a system that balances affordability, precision, and survivability. As adversaries improve their air defense networks and GPS denial techniques, ground-launched guided munitions like Sceptre offer credible alternatives that reduce risk while maintaining operational reach. In the broader landscape of strategic deterrence and contested logistics, Sceptre could redefine how Western forces think about mass, maneuver, and munitions in the decades to come.
