Brandon wrote:
> M-1 tracked infantry carrier
Hello Brandon,
I find it interesting how you bring historical prejudices into
the background. All to often, AHs cover only the social angle,
and new tech is adopted wholeheartedly.
> In early 1943, the Atlanteans made a more significant attempt to covertly
> provide the Allies with improved equipment. In their first war against the
> Martians, it was driven home to the Atlanteans that men were more valuable
> than machines.
That wasn't the case for the Allies, historically, if you count
all the Allies. American industry, British courage, and seas of
Russian blood stemmed the tide.
> As a result, the more men a combat vehicle carried, the
> better the armor it had. The 'Infantry Carrier, Tracked, M-1' (as the US
> designated it) reflected that philosophy, offering fairly good (almost
> tank-like)
> protection for it's three crew and six dismounts. The idea was not
> well-received by the Allies, who also didn't like the weight (21 tons), speed
> (32
> mph) or small number of soldiers carried.
Would the Atlantean proposal of an assault rifle have gone with
a matching SAW and a smaller infantry squad?
> Things changed after the invasion of Italy in 1943. The Martians, fearing
> the tide was turning too far against the Axis, began overtly aiding them
> (completely abandoning their treaty with the Atlanteans and dragging them
> into the war). this included releasing large stocks of their infamous 'black
> smoke' which were then used as the filler in artillery shells and dispersal
> bombs. Allied infantry, either on foot or in open trucks and halftracks,
> were decimated. Only those soldiers in the sealed M-1A1's were fully
> protected.
Was the Martian smoke more deadly than mere human gas? And
there were early NBC suits, I think. Rush them into
production and general issue?
> This created some friction with the Atlanteans, as accusations flew that
> they knew what the Martians had planned and had callously not told Allied
> command. The Atlanteans claimed that sealing combat vehicles was merely
> standard design practice for them.
Learn to trust the Atlaneans, even if you don't understand why.
They know better. They're good. They're God (or Goddess, as it
may be).
> Two standard bazookas are affixed to mounting brackets on the right side
> of the turret but can be removed in a matter of seconds. The electrically
> fired rockets have their leads connected to insulated posts on the side of
> the turret, which allows the commander to fire either or both from inside. A
> total of twelve rockets are carried (two in the tubes). The bazookas are
> really intended for use by the dismounts but are carried in a fashion to
> allow them to also be used as emergency anti-tank weapons for the vehicle. It
> was intended to eventually replace these with semi-permanent 57mm recoilless
> rifles, which were still in development.
Was the problem of getting bazookas inside an issue? And would an
externally mounted RR be effective? How about aiming?
> Six
> troops are carried and exit either via two roof hatches or a rear drop ramp.
> They sit facing each other, in the rear section of the vehicle, with the
> cargo evenly split on the walls behind them.
No firing ports, then?
> Subassemblies: Sealed Medium Tank chassis +4, full-rotation Small AFV
> turret [Body:T] +3, full-rotation Mini Weapon open mount [Tur:T] +0, tracks
> +3.
One OM is AWOL.
> Weaponry
> 37mm Medium Ground AC/M-1 [Turret:F] (120).
One could argue that the 25mm cannon in the Bradley is really
just a HMG on steroids, to go after the kind of target a HMG
could handle in WWII -- armored cars, cheap APCs, trucks at
long range, perhaps even aircraft if you could hit them.
So why go for a 37mm gun, and not a 20mm gun with more ammo?
> Ground LMG/M-1919A4 [Tur:F] (2,500).
> Very Long Ground HMG/M-2HB [OM1:F] (400).
Would that go with the Atlantean doctrine of staying under
armor, or was it a human addition?
> 2x2.36" rocket launchers/M-1 bazookas (OM2:F) (12).
>
> Equipment
> Body: Fire extinguisher, NBC kit (10-man), medium radio receiver and
> transmitter. Turret: 4 smoke dischargers.
How about active IR?
And a second radio? TL7 AFVs tend to have two.
- - -
Years ago, I wrote a family of TL6 AFVs for GURPS Traveller.
The strategic conditions were quite different, but they are
'hindsight designs' as well -- TL6 tech, higher-TL doctrine.
More recently, I wrote a couple of 'generic AH' anachronistic
vehicles, including a TOW HMMWV-clone.
Delgado Conqueror-Class APC v2.0 (GURPS Traveller TL 6)
Copyright 2000 by Onno Meyer
Many worlds of the Imperium have a pre-atomic industrial base, and for
such worlds Delgado produces the Conqueror-class APC. The vehicle is mainly
intended for internal security, but it is cheap enough to form a speed bump
in the path of a spaceborne invasion force. It carries six infantrymen, two
crewmembers, a 12.5mm HMG and a 5.5mm LMG. In addition to fully assembled
vehicles, Delgado sells kits and licenses for local manufacture. Chassis
and engine of the Conqueror have been used for several other AFVs.
The vehicle uses GURPS Vehicles TL 6 [second edition, first printing,
June 99 errata]. GURPS Traveller doesn't change the available technology,
but it influences design decisions. GURPS Traveller TL 6 would be TL 5-6
under the old Traveller TL system (in this case TL 6).
Subassemblies and Body Features: Tracks (Tr, two tracks). Open mount (Om,
on BoF). Turret (Tu, full rotation, on BoT). 60 degree slope on BoF.
Propulsion: 62.5 kW tracked drivetrain (HP 30).
Armaments: 5.5mm LMG-6 (TuF, HP 2). 10,000 x 5.5mm solid rounds (Tu, HP
8). Universal mount for LMG (Tu, HP 1). 12.5mm HMG-6 (TuF, HP 8). 1,000
x 12.5mm AP rounds (Tu, HP 10). Universal mount for HMG (Tu, HP 5).
Instruments and Electronics: Two scrambled medium range radios (10 miles,
HP 2, 0.1 kW each). IR Searchlight (TuF, 0.3 miles, HP 2, 0.3 kW). Two
telescopes (TuR/TuL, x2, +1/+2, HP 1 each). Telescope (TuF, x20, +4/+8,
HP 5). Navigation instruments (HP 4). Two decoy dischargers (Om, smoke,
HP 6 each). 12 decoy reloads (smoke, HP 4 each).
Miscellaneous: Fire extinguisher system (HP 13). Cargo ramp (B).
Controls: Mechanical. Crew Stations: "Driver" operates maneuver controls,
"Commander" fires weapons and operates all other systems, both from
cramped crew stations (HP 50 each). Crew: "Driver" and "Commander".
Occupancy: Short. Passengers: Six. Accomodations: Six cramped seats (HP
50 each). Environmental System: Environmental control for eight
persons (HP 9, 2 kW).
Power and Fuel: 65 kW standard diesel (uses 2.6 gph D, HP 40) powers all
systems. Four 800 kWs lead-acid batteries (HP 1 each) power a radio for
533 minutes. Two 20 gallon self-sealing tanks (HP 13 each). 40 gallons
diesel (fire on 9) last for 15 hours and 23 minutes.
Access, Cargo and Empty Space: 26.3 cf access space (Bo). 8 cf cargo space
(Bo). 3.6 cf empty space (Bo). 3.4 cf empty space (Tu). Volumes: Bo
305 cf. Tr 183 cf. Om 2 cf. Tu 10 cf. Areas: Bo 300 sf. Tr 200 sf. Om
10 sf. Tu 30 sf. Structural area 530 sf. Total area 540 sf.
Structure: Heavy frame. Hit Points: Bo 900. Tr 300 each. Om 20. Tu 90.
Special Structural Option: Heavy compartmentalization in Bo.
Armor: BoF PD 6, DR 120 expensive metal armor. BoB, BoR, BoL, BoT, BoU PD
4, DR 30 standard metal armor. Tr PD 4, DR 15 standard metal armor. Tu
PD 4, DR 30 standard metal armor.
Surface Features: Waterproof. Camouflage paint job. Tow hitch.
Vision and Details: Poor view, large and small hatch on top, small hatch
on turret top, ramp in rear, headlights and running lights, seatbelts,
simple locks.
Statistics: Cheaply made. Empty weight 17,500 lbs. Ammo 500 lbs. Fuel 240
lbs. Usual payload 1,760 lbs. Loaded weight 20,000 lbs. (10 tons).
Volume 500 cf, size modifier +4. Price $25,000. HT 11. Maintenance
interval 63 hours.
Ground Performance: Speed 25 mph. gAccel 2 mph/s. gDecel 20 mph/s. gMR
0.25. gSR 6. Very low GP, off-road speed 4/5.
TL6 LMG-6, 5.5mm (v2.0, OM 5/00)
A very light machinegun for vehicle mounts. Game mechanics: 5.5mm,
conventional rifled, long-barreled, heavy automatic. The design is
compatible with GURPS Traveller rules.
LMG-6, 5.5mm 10 lbs. 0.2 cf $150
Solid round 0.021 lbs. 0.00014 cf $0.011
AP round 0.021 lbs. 0.00014 cf $0.033
Round Malf Type Damage SS Acc 1/2D Max RoF Shots
Solid Crit. Cr. 5d 14 11 400 2,800 20 var.
AP Crit. Cr. 5d(2) 14 11 400 2,800 20 var.
TL6 HMG-6, 12.5mm (v2.0, OM 5/00)
A heavy machinegun for vehicle mounts. Game mechanics: 12.5mm,
conventional rifled, very-long-barreled, heavy automatic. The
design is compatible with GURPS Traveller rules.
HMG-6, 12.5mm 70 lbs. 1.4 cf $1,100
Solid round 0.29 lbs. 0.0019 cf $0.15
AP round 0.29 lbs. 0.0019 cf $0.45
Round Malf Type Damage SS Acc 1/2D Max RoF Shots
Solid Crit. Cr. 13d 20 14 1,100 5,100 20 var.
AP Crit. Cr. 13d(2) 20 14 1,100 5,100 20 var.
Delgado Defender-Class AA Gun v2.0 (GURPS Traveller TL 6)
Copyright 2000 by Onno Meyer
Many worlds of the Imperium have a pre-atomic industrial base, and for
such worlds Delgado produces the Defender-class AA Gun. It mounts two 20mm
autocannon with enough punch to damage G-Carriers or light starships. In
addition to fully assembled vehicles, Delgado sells kits and licenses for
local manufacture. The Defender is based on the chassis and engines of the
Conqueror-class APC to simplify logistics.
The vehicle uses GURPS Vehicles TL 6 [second edition, first printing,
June 99 errata]. GURPS Traveller doesn't change the available technology,
but it influences design decisions. GURPS Traveller TL 6 would be TL 5-6
under the old Traveller TL system (in this case TL 6).
Subassemblies and Body Features: Tracks (Tr, two tracks). Turret (Tu, full
rotation, on BoT). 60 degree slope on BoF.
Propulsion: 62.5 kW tracked drivetrain (HP 30).
Armaments: Two 20mm Light Autocannon-6 (TuF, HP 15 each). 1,500 x 20mm
APCR rounds (HP 20). Link. Universal mounts (Tu, HP 9).
Instruments and Electronics: Two scrambled medium range radios (10 miles,
HP 2, 0.1 kW each). Telescope (TuF, x10, +3/+6, HP 3). Radar (TuF, air
search, 2 miles, scan 13, HP 6, 0.5 kW). Navigation instruments (HP 4).
Two IFF (HP 4 each). Five decoy dischargers (chaff, HP 6 each). Two
decoy reloads (chaff, HP 4 each).
Miscellaneous: Fire extinguisher system (HP 13).
Controls: Mechanical. Crew Stations: "Driver" operates maneuver controls,
"Commander" operates radios and navigation instruments, "Gunner" fires
weapons and operates telescope and decoys, "Radar Operator" operates
radar, from cramped crew stations (HP 50 each). Crew: "Driver",
"Commander", "Gunner" and "Radar Operator".
Occupancy: Short. Environmental System: Environmental control for four
persons (HP 6, 1 kW).
Power and Fuel: 65 kW standard diesel (uses 2.6 gph D, HP 40) powers all
systems with 0.8 kW excess power. Three 800 kWs lead-acid batteries (HP
1 each) power a radio for 400 minutes. Two 20 gallon self-sealing tanks
(HP 13 each). 40 gallons diesel (fire on 9) last for 15 hours and 23
minutes.
Access, Cargo and Empty Space: 26.3 cf access space (Bo). 3 cf cargo space
(Bo). 82.3 cf empty space (Bo). 0.1 cf empty space (Tu). Volumes: Bo
305 cf. Tr 183 cf. Tu 12 cf. Areas: Bo 300 sf. Tr 200 sf. Tu 40 sf.
Total area 540 sf.
Structure: Heavy frame. Hit Points: Bo 900. Tr 300 each. Tu 120. Special
Structural Option: Heavy compartmentalization in Bo.
Armor: BoF PD 6, DR 120 expensive metal armor. BoB, BoR, BoL, BoT, BoU PD
4, DR 30 standard metal armor. Tr PD 4, DR 15 standard metal armor. Tu
PD 4, DR 40 expensive metal armor.
Surface Features: Waterproof. Camouflage paint job.
Vision and Details: Poor view, large and small hatch on top, door in rear,
headlights and running lights, seatbelts, simple locks.
Statistics: Cheaply made. Empty weight 18,000 lbs. Ammo 900 lbs. Fuel 240
lbs. Usual payload 860 lbs. Loaded weight 20,000 lbs. (10 tons). Volume
500 cf, size modifier +4. Price $30,000. HT 11. Maintenance interval 58
hours.
Ground Performance: Speed 25 mph. gAccel 2 mph/s. gDecel 20 mph/s. gMR
0.25. gSR 6. Very low GP, off-road speed 4/5.
TL6 Light Autocannon-6, 20mm (v2.0, OM 6/00)
A simple autocannon for vehicle mounts. Game mechanics: 20mm,
conventional rifled, very-long-barreled, heavy automatic. The
design is compatible with GURPS Traveller rules.
Light Autocannon-6, 20mm 180 lbs. 3.6 cf $1,900
Solid round 0.6 lbs. 0.004 cf $0.3
APCR round 0.6 lbs. 0.004 cf $1.5
Round Malf Type Damage SS Acc 1/2D Max RoF Shots
Solid Crit. Cr. 7d*3 20 14 1,400 5,900 20* var.
APCR Crit. Cr. 7d*4(2) 20 14 1,400 5,900 20* var.
Delgado Archer-Class Mortar Carrier v2.0 (GURPS Traveller TL6)
Copyright 2001 by Onno Meyer
Many worlds of the Imperium have a pre-atomic industrial base, and for
such worlds Delgado produces the Archer-class Mortar Carrier. It carries a
75mm breechloading gun-mortar for indirect and direct fire and a 5.5mm LMG
for self-defense. In addition to fully assembled vehicles, Delgado sells
kits and licenses for local manufacture. The Archer is based on the chassis
and engines of the Conqueror-class APC to simplify logistics.
The vehicle uses GURPS Vehicles TL6 [second edition, first printing,
June 99 errata]. GURPS Traveller doesn't change the available technology,
but it influences design decisions. GURPS Traveller TL6 would be TL5-6
under the old Traveller TL system (in this case TL6).
Subassemblies and Body Features: Tracks (Tr, two tracks). Open mount (Om,
on BoF). Turret (Tu, full rotation, on BoT). 60 degree slope on BoF.
Propulsion: 62.5 kW tracked drivetrain (HP 30).
Armaments: 5.5mm LMG-6 (TuF, HP 2). 5,000 x 5.5mm solid rounds (Tu, HP 5).
Universal mount for LMG (Tu, HP 1). 75mm Gun-Mortar-6 (TuF, HP 13). 120
x 75mm HE bombs (HP 30). 30 x 75mm HEAT bombs (HP 11). 30 x 75mm CHEM
(Smoke) bombs (HP 11). Universal mount for Gun-Mortar (Tu, HP 8).
Instruments and Electronics: Two scrambled medium range radios (10 miles,
HP 2, 0.1 kW each). IR Searchlight (TuF, 0.3 miles, HP 2, 0.3 kW). Two
telescopes (TuR/TuL, x2, +1/+2, HP 1 each). Telescope (TuF, x20, +4/+8,
HP 5). Navigation instruments (HP 4). Two decoy dischargers (Om, smoke,
HP 6 each). Ten decoy reloads (smoke, HP 4 each).
Miscellaneous: Fire extinguisher system (HP 13).
Controls: Mechanical. Crew Stations: "Driver" operates maneuver controls,
"Gunner" fires weapons and operates all other systems, "Loader" loads,
all from cramped crew stations (HP 50 each). Crew: "Driver", "Gunner"
and "Loader".
Occupancy: Short. Environmental System: Environmental control for eight
persons (HP 9, 2 kW).
Power and Fuel: 65 kW standard diesel (uses 2.6 gph D, HP 40) powers all
systems. Four 800 kWs lead-acid batteries (HP 1 each) power a radio for
533 minutes. Two 20 gallon self-sealing tanks (HP 13 each). 40 gallons
diesel (fire on 9) last for 15 hours and 23 minutes.
Access, Cargo and Empty Space: 26.3 cf access space (Bo). 5.75 cf cargo
space (Bo). 92.55 cf empty space (Bo). 3.6 cf empty space (Tu).
Volumes: Bo 305 cf. Tr 183 cf. Om 2 cf. Tu 10 cf. Areas: Bo 300 sf.
Tr 200 sf. Om 10 sf. Tu 30 sf. Structural area 530 sf. Total area 540
sf.
Structure: Heavy frame. Hit Points: Bo 900. Tr 300 each. Om 20. Tu 90.
Special Structural Option: Heavy compartmentalization in Bo.
Armor: BoF PD 6, DR 120 expensive metal armor. BoB, BoR, BoL, BoT, BoU PD
4, DR 30 standard metal armor. Tr PD 4, DR 15 standard metal armor. Tu
PD 4, DR 30 standard metal armor.
Surface Features: Waterproof. Camouflage paint job. Tow hitch.
Vision and Details: Poor view, large and small hatch on top, door in rear,
headlights and running lights, seatbelts, simple locks.
Statistics: Cheaply made. Empty weight 17,500 lbs. Ammo 1,545 lbs. Fuel
240 lbs. Usual payload 715 lbs. Loaded weight 20,000 lbs. (10 tons).
Volume 500 cf, size modifier +4. Price $25,130. HT 11. Maintenance
interval 63 hours.
Ground Performance: Speed 25 mph. gAccel 2 mph/s. gDecel 20 mph/s. gMR
0.25. gSR 6. Very low GP, off-road speed 4/5.
TL6 LMG-6, 5.5mm (v2.0, OM 5/00)
A very light machinegun for vehicle mounts. Game mechanics: 5.5mm,
conventional rifled, long-barreled, heavy automatic. The design is
compatible with GURPS Traveller rules.
LMG-6, 5.5mm 10 lbs. 0.2 cf $150
Solid round 0.021 lbs. 0.00014 cf $0.011
AP round 0.021 lbs. 0.00014 cf $0.033
Round Malf Type Damage SS Acc 1/2D Max RoF Shots
Solid Crit. Cr. 5d 14 11 400 2,800 20 var.
AP Crit. Cr. 5d(2) 14 11 400 2,800 20 var.
TL6 Gun-Mortar-6, 75mm (v2.0, OM 6/00)
A mortar for vehicle mounts. Game mechanics: 75mm, conventional
rifled, low-powered, very-short-barreled breechloader. The design
is compatible with GURPS Traveller rules.
Gun-Mortar-6, 75mm 150 lbs. 3 cf $1,800
HE bomb 8 lbs. 0.08 cf $12
HEAT bomb 8 lbs. 0.08 cf $18
CHEM (Smoke) bomb 8 lbs. 0.08 cf $12
CHEM (WP) bomb 8 lbs. 0.08 cf $24
Round Malf Type Damage/Radius SS Acc 1/2D Max RoF Shots Ldrs.
HE Crit. Exp.* 20d[6d] 20 11 390 2,800 1/4 1 1
HEAT Crit. Exp. 6d*3(10) 20 11 390 2,800 1/4 1 1
CHEM Crit. Spcl. 21 yards 20 11 390 2,800 1/4 1 1
Anachronistic ATGM Carrier v1.0 (TL6)
Copyright 2007 by Onno Meyer
In some alternate history stories, one side finds efficient uses for
historical technologies. In other novels, genuine time travelers bring
modern concepts with them. This anti-tank guided missile carrier looks
like a TOW HMMWV - a rugged 4x4 with a diesel engine, large wheels, a
self-recovery winch, and a wire-guided missile system on the roof.
Compared to anti-tank guns of the period, an ATGM has a low launcher
weight and a high ammunition cost. The road speed is superior to towed
or tracked guns. The ATGM Carrier might be used by parachute or glider
units where weight is at a premium, or by elite quick reaction forces.
The diesel engine burns 4.5 gallons per hour at routine travel speed.
A tank of fuel is $6 and eight missiles are $96,000.
Subassemblies: Body +3, four Off-Road Wheels +1, full-rotation Open
Mount +0.
Powertrain: 100-kW all-wheel drivetrain; 100-kW HP diesel engine;
3,200-kWs lead-acid batteries.
Fuel: 25 gallons diesel (fire 10).
Occ: 4 RCS. Cargo: 12.5 cf.
Armor F RL B T U
Body: 3/8 3/8 3/8 3/8 3/8
Wheels: 3/8 3/8 3/8 3/8 3/8
Weaponry
170mm ATGM Launcher [OM:F] (8 missiles) +0.
Equipment
Body: Two medium range radios; four smoke dischargers with one reload
each; ST 60 winch; tire inflation system; 4-man environmental controls.
External: Hitch; convertible hardtop.
Statistics
Size: 14'x7'x7' Payload: 1 ton Lwt.: 4 tons
Volume: 367.2 cf Maint.: 152 hrs. Price: $17,390.5
HT: 11. HPs: 225 Body, 38 each Wheel, 46 Open Mount
gSpeed: 80 gAccel: 4 gDecel: 10 gMR: 0.75 gSR: 4
Ground Pressure Moderate. 1/3 Off-Road Speed.
Design Notes
Body is 300 cf. Wheels are 60 cf. Open Mount is 7.2 cf. Structure is
light and standard. Armor is standard metal. Mechanical controls. 46.6
cf of empty space. Seven missiles are stowed in the body and one ready
missile is carried in the open mount. Empty weight is 6,000 lbs.
Weapon Weight Volume Cost Power WPS VPS CPS TL
170mm ATGM Launcher 200 4 $2,000 - 100 2 $12,000 6
Weapon Guid Malf. Type Damage SS Spd End Min Max RoF
170mm ATGM Launcher WG 15 exp. 6d*9(10) 20 300 12 200 3,600 1/6
The vehicle uses the design rules from GURPS Vehicles [2nd edition,
3rd printing, Dec 2004 errata], VXi, VXii (including the armor volume
rule) and the text format from Vehicles Lite.
Regards,
Onno
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