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Briar Rose Self Propelled Gun

design by Lewis Roberts

Nebula Entry

The BriarRose Self Propelled gun is based on the Sunfire tank chassis. It replaces the Sunfire's 9cmL100 cannon with a 15cmL100 cannon which is placed in a small turret at the back of the vehicle. To make room for the larger gun, the Sunfire's additional front armor was removed, as was the rear slope. The weight freed up by the removal of the armor allows the BriarRose to carry 14 tons of ammunition. The BriarRose is equipped with a 15cmL100 hypervelocity cannon firing rocket assisted propulsion (RAP) rounds. The RAP rounds and the extremely long barrel give the BriarRose a 75km indirect fire range. The BriarRoses often operate in conjunction with a TL-15 Marine Fire Direction Control APC, which coordinates and directs their fire.

A coaxial automatic grenade launcher provides a defensive capability against enemy personnel, and against targets too close to be engaged with the main gun. It fires standard 4cm RAM grenades. It has four switchable magazines that allow it to switch between four types of ammunition with no delay. These are usually, HE, HEAP, Flettchette and White Phosphorus. The HEAP rounds allow it to engage lightly armored vehicles and bunkers.

The vehicle is equipped with the Shooting Star defensive system. A computer controlled rotary gun equipped with a a state of the art point defense computer is capable of destroying incoming artillery rounds, missiles etc. This along with 10 decoys gives the BriarRose increased survivability on the battlefield.

The vehicle has two full sized computers, which reduce the maintenance demands by a factor of four. Though expensive these computers drastically reduce the upkeep cost of the vehicles over their projected lifetime. They also provide large amounts of computing power to aid the crew. This aid includes enhanced image processing, threat analysis, and tactical surveys. None of the recent Solee designs have command versions. Modifying vehicles for command, makes it possible to identify those single out those vehicles, and if the command vehicle is taken out, then the second in command has fewer resources to command the unit with. Instead Solee provides all of its vehicles with communication systems capable of interfacing with orbiting support craft. The full sized computers also provide assistance the commander.

Briar Rose Self Propelled Gun

General Data

Tech Level: 9/10
Price: 4.52 MCr
Size: 280 m3
Mass (loaded/unloaded): 310.0 / 256.1

Engineering Data

Power Plant: 6.0MW MHD Plant burning Hydrogen with 9.5 hours of fuel (11.5m3). High Bypass Turbofans generate 0.80MW. HBTs generate 40 tons of thrust, 60 tons with afterburners engaged.
Maint: 19


Controls: Computer Linked
Computer: 2 TL-9 computers
Avionics: TL-8 Avionics, Terrain Following Avionics (NOE=13kph) Satellite Positioning System
Commo: 300km Laser Communicator, 300km Maser Communicator, 300km Radio
Sensors: Searchlight (250m), AIR Searchlight (120m), Image Enhancement Scope (250m), Imaging Radar (300m)
ECM/ECCM: 10 decoys of any type in one launcher
Life Support Extended
Cargo: 11 m3 1 small cargo hatch
Crew: 3: Driver, Gunner & Commander
Passengers: None


Offensive 15cmL100 Hypervelocity Cannon in small turret with coaxial 4cmL10 RAM Automatic Grenade Launcher
Defensive: Shooting Star System
Ammo: 14 tons of ammo for cannon = 103 rnds, 500 4cm RAM grenades
Fire Control: TL-10 Ballistic Computer (-3 DMs), Direct& TL-9 Indirect fire sights for Cannon, Direct and TL-9 Indirect sights for the Grenade Launcher.
Stabilization: Advanced Stabilization for Cannon and Grenade Launcher

Cannon Rounds
Weapon ROF C-BDamage Pen Rtg Danger Space S Range Indirect Max Range WeightCost
15cm HE 1/13 56-52 16C   734m
135kg 1850Cr
15cm HEAP 1/13 37-26 180C   734m
135kg 1905Cr
15cm Flechette 1/13  2d6/1d6 1-Nil 147x37 734m
135kg 3850Cr

Grenade Launcher
Weapon ROF S Range Indirect Max Range
Grenade Launcher5 281m4.2km


Max Speed: 645 kph (968kph w/ afterburner)
Cruising Speed: 483 kph (726 kph w/afterburner)
NOE Speed: 130 kph
Combat Move: 18 NOE/ 90 high (135 high w/afterburner)
Travel Move: 1932
Endurance: 9 hours at normal burn. Afterburners consume 8 m3 of fuel per hour.
Fuel Capacity: 36 m3 of High Grade Hydrocarbon distillates


Config: Transonic small turret
Suspension: Contragrav
HF: 96 TF:96
HS: 72 TS: 72
HR: 48 TR: 48
Deck:48 Belly: 48

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