Tiberius Aerospace's Sceptre TRBM 155HG 155mm artillery round

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newatlas.com

Ramjet engine turns artillery rounds into supersonic missiles

Tiberius Aerospace's Sceptre TRBM 155HG 155mm artillery round has a ramjet in its nose that allows it to fly at supersonic speeds and gives it over four times the range of a conventional round.
newatlas.com newatlas.com
Debuting on May 19, 2025 before the Future Artillery conference in London, the Sceptre TRBM 155HG 155mm ramjet-powered precision-guided artillery munition is designed to fit in any NATO standard 155mm artillery piece. Built around a small ramjet engine, it has a range of 93 miles (150 km), can fly at Mach 3.5, and can reach an altitude of 65,000 ft (19,800 m).

The altitude is particularly important because the Sceptre is a precision round with a hybrid GPS/inertial guidance system and AI-enhanced targeting correction that can hit a target with a margin of error of 16 ft (5 m). By flying at high altitude, this puts Sceptre (hopefully) out of the range of electronic warfare jamming devices. In addition, being able to preserve such precision means that it can get by with an explosive payload of only 11.5 lb (5.2 kg).

Sceptre is liquid fueled and is compatible with diesel, JP-4, and JP-8 fuels. Its just-in-time fueling system allows it to be stored for up to 20 years. The company says that it's undergone field tests in the US and claims the Sceptre is significantly cheaper than comparable-range missiles.
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www.janes.com

Future Artillery 2025: Tiberius unveils Sceptre ramjet 155 mm munition

Tiberius Aerospace unveiled its Sceptre ramjet 155 mm munition on the eve of Defence iQ's Future Artillery 2025 conference being held in London from 20 to 22 May. The...
www.janes.com www.janes.com
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www.edrmagazine.eu

Tiberius Aerospace: beyond the Sceptre 155 munition, ground-launched missiles, and lethality evaluation software - EDR Magazine

At the Future Artillery conference organised by Defence iQ Tiberius Aerospace unveiled its Sceptre 155 mm long range guided ammunition.
www.edrmagazine.eu www.edrmagazine.eu
 
Their choice of liquid propellant is bit on the weird side, as assuming launched from M777 with barrel length of 5m. Mach 2 speed or 680 m/s will subject the round to about 19135 G, will the propellant tank hold on to those acceleration ?

So far ramjet aided projectiles have been a solid fuel.
 
stealthflanker said:
Their choice of liquid propellant is bit on the weird side, as assuming launched from M777 with barrel length of 5m. Mach 2 speed or 680 m/s will subject the round to about 19135 G, will the propellant tank hold on to those acceleration ?

So far ramjet aided projectiles have been a solid fuel.
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They want to use things like normal JP fuels or diesel for reducing cost so i guess they probaly figured sutch problems out. That said its still a hugh round with 1.5m length so they had some space to work with
 
A question: If ram-jet intended as 'Sustainer', must round be launched as harshly as trad munition ?

System would seem a mini-MLRS, fit better between self-loading 'Howitzer' and self-loading 'Mortar'.

With advantage (?) that can also fire 'trad' rounds.

Uh, which was the US LAV that could fire rockets and 'trad' ?
Ah, the unfortunate Sheridan, and its hapless Shillelagh...
 
Nik said:
A question: If ram-jet intended as 'Sustainer', must round be launched as harshly as trad munition ?

System would seem a mini-MLRS, fit better between self-loading 'Howitzer' and self-loading 'Mortar'.

With advantage (?) that can also fire 'trad' rounds.

Uh, which was the US LAV that could fire rockets and 'trad' ?
Ah, the unfortunate Sheridan, and its hapless Shillelagh...
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To a degree yes, if its going to reach operating speed for the ramjet...particularly if its 1.5m long...they say it leaves the barrel at m2.0 (about 690m/s at sea level). Then accelerates rapidly to m3.5 as it climbs.

They have also posited (not developed) Invictus, a 2.4m long missile using the same tech.
 
timmymagic said:
To a degree yes, if its going to reach operating speed for the ramjet...particularly if its 1.5m long...they say it leaves the barrel at m2.0 (about 690m/s at sea level). Then accelerates rapidly to m3.5 as it climbs.

They have also posited (not developed) Invictus, a 2.4m long missile using the same tech.
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Which probaly also has a solid sustainer in it. Would be interresting if Spectre also did
 
kqcke for you said:
Which probaly also has a solid sustainer in it. Would be interresting if Spectre also did
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You'd think its got a solid booster to launch and get to speed. But as an adaptation of Scepter (essentially its elongated by 1m) you'd have to assume they'd follow the same path in terms of ramjet fuel.
 
timmymagic said:
You'd think its got a solid booster to launch and get to speed. But as an adaptation of Scepter (essentially its elongated by 1m) you'd have to assume they'd follow the same path in terms of ramjet fuel.
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Yeah only a solid booster. That said its Not only longer but also thicker with 165mm vs 155mm. Still i like the idea of it if its cheap enough.
Like a 122mm missile with the range of GMLRS-ER
 
As a though experiment, could this ramjet be adapted to solid rocket booster?
Imagine a GMLRS type system with these.....
OK you'd get less in a HIMARS than 122mm rockets, but it matches the ER version.

Another thought....
Could this also be adapted to airlaunch?
A 155mm missile that ideally fits into weapons bays.....

An 203mm (8") option would be nice too.
 
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