Author Topic: Light infantry support vehicles  (Read 2332 times)

Khymerion

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Light infantry support vehicles
« on: 14 April 2011, 09:04:37 »
Always in search of a new way to bring support for mechanized infantry and power armored units, a light mobile cannon to help break up strong points on the offense or help break up concentrations on the defense would most likely be greatly appreciated.  For such a low price, one attached to a light vehicle element should not be completely out of the question.

Code: [Select]
Type/Model:    P-105
Tech:          Inner Sphere / 3060
Config:        Tracked Vehicle
Rules:         Level 3, Standard design

Mass:          25 tons
Power Plant:   75 I.C.E.
Cruise Speed:  32.4 km/h
Maximum Speed: 54.0 km/h
Armor Type:    Standard
Armament:     
  1 Thumper Cannon
  1 Machine Gun
Manufacturer:  (Unknown)
  Location:    (Unknown)
Communications System:  (Unknown)
Targeting & Tracking System:  (Unknown)

--------------------------------------------------------
Type/Model:    Untitled
Mass:          25 tons
Construction Options:  Fractional Accounting

Equipment:                                 Items    Mass
Int. Struct.:  12 pts Standard               0      2.50
Engine:        75 I.C.E.                     0      4.00
    Cruise MP:   3
     Flank MP:   5
Heat Sinks:      0 Single                    0       .00
Cockpit & Controls:                          0      1.25
Crew: 2 Members                              0       .00
Armor Factor:   84 pts Standard              0      5.25

                          Internal    Armor
                          Structure   Value
   Front:                     3         30
   Left / Right Sides:        3      20/20
   Rear:                      3         14

Weapons and Equipment    Loc  Heat  Ammo   Items    Mass
--------------------------------------------------------
1 Thumper Cannon         Front    0   20     2     11.00
1 Machine Gun            Front    0  100     2      1.00
1 Trailer Hitch          Rear                1       .00
--------------------------------------------------------
TOTALS:                           0          5     25.00
Items & Tons Left:                           5       .00

Calculated Factors:
Total Cost:        420,938 C-Bills
Battle Value 2:    310 (old BV = 138)
Cost per BV:       1,357.86
Weapon Value:      47 / 47 (Ratio = .15 / .15)
Damage Factors:    SRDmg = 4;  MRDmg = 3;  LRDmg = 0

A higher speed was forsaken due to the fact that it will prevent it's crew from getting the desire to move too far out ahead of the mechanized infantry units it is designed to support.
« Last Edit: 25 April 2011, 18:57:33 by Khymerion »
"Any sufficiently rigorously defined magic is indistinguishable from technology."  - Larry Niven... far too appropriate at times here.

...but sometimes making sure you turn their ace into red paste is more important than friends.

Do not offend the chair leg of truth.  It is wise and terrible.

The GM is only right for as long as the facts back him up.

Libertadkrieger

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Re: Light infantry support vehicle
« Reply #1 on: 18 April 2011, 18:27:26 »
Interesting.  Between the price, the apparent hitting ability, and the specific MO, I would definitely buy a company or six, instead of a battlemech

Khymerion

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Re: Light infantry support vehicle
« Reply #2 on: 22 April 2011, 12:46:44 »
As I have been a long fan of using the same chassis for a number of sub-variants, also in the role of mechanized infantry support, the P-105 chassis can see a couple of product improvements over the life of the vehicle.  A possible problem for units having to dig in against long ranged fire is the lack of ability to return fire, having to weather the bombardment or worse, try to pursue that foe in a running battle against what is most likely a faster foe.   How do you match that?  There is always mounting missiles as well but that won't do, this is a gun boat and variants should reflect that.

Luckily there is the advent of the Hyper Velocity gun.

Code: [Select]
Type/Model:    P-105-D1
Mass:          25 tons
Construction Options:  Fractional Accounting

Equipment:                                 Items    Mass
Int. Struct.:  12 pts Standard               0      2.50
Engine:        75 I.C.E.                     0      4.00
    Cruise MP:   3
     Flank MP:   5
Heat Sinks:      0 Single                    0       .00
Cockpit & Controls:                          0      1.25
Crew: 2 Members                              0       .00
Armor Factor:   68 pts Standard              0      4.25

                          Internal    Armor
                          Structure   Value
   Front:                     3         30
   Left / Right Sides:        3      14/14
   Rear:                      3         10

Weapons and Equipment    Loc  Heat  Ammo   Items    Mass
--------------------------------------------------------
1 HV AC/5 (THB)          Front    0   15     2     13.00
Trailer Hitch                 Rear     0    0      1       0.00
--------------------------------------------------------
TOTALS:                           0          2     25.00
Items & Tons Left:                           7       .00

Calculated Factors:
Total Cost:        389,063 C-Bills
Battle Value 2:    339 (old BV = 194)
Cost per BV:       1,147.68
Weapon Value:      59 / 59 (Ratio = .17 / .17)
Damage Factors:    SRDmg = 5;  MRDmg = 4;  LRDmg = 3
BattleForce2:      MP: 3T,  Armor/Structure: 0 / 3
                   Damage PB/M/L: 1/1/1,  Overheat: 0
                   Class: GL;  Point Value: 3

An AC-10 can be substituted if a less high tech variant is desired but at the expense of not having that counter battery ability to long ranged pot shot takers that might harass an infantry unit.  Sometimes though, having the raw damage of the AC-10 does really help keep the morale of the guy on the ground up.

Code: [Select]
Type/Model:    P-105-D2
Mass:          25 tons
Construction Options:  Fractional Accounting

Equipment:                                 Items    Mass
Int. Struct.:  12 pts Standard               0      2.50
Engine:        75 I.C.E.                     0      4.00
    Cruise MP:   3
     Flank MP:   5
Heat Sinks:      0 Single                    0       .00
Cockpit & Controls:                          0      1.25
Crew: 2 Members                              0       .00
Armor Factor:   68 pts Standard              0      4.25

                          Internal    Armor
                          Structure   Value
   Front:                     3         25
   Left / Right Sides:        3      16/16
   Rear:                      3         11

Weapons and Equipment    Loc  Heat  Ammo   Items    Mass
--------------------------------------------------------
1 Autocannon/10          Front    0   10     2     13.00
1 Trailer Hitch          Rear                1       .00
--------------------------------------------------------
TOTALS:                           0          3     25.00
Items & Tons Left:                           7       .00

Calculated Factors:
Total Cost:        396,563 C-Bills
Battle Value 2:    354 (old BV = 209)
Cost per BV:       1,120.23
Weapon Value:      89 / 89 (Ratio = .25 / .25)
Damage Factors:    SRDmg = 9;  MRDmg = 5;  LRDmg = 1
BattleForce2:      MP: 3T,  Armor/Structure: 0 / 3
                   Damage PB/M/L: 1/1/-,  Overheat: 0
                   Class: GL;  Point Value: 4

The armor belt and close in had to be shaved off badly to fit it on but I was not sure how well advanced armors would go over in units so dedicated to their role.  If Hvy Ferro was added, it would make up the difference between the base P-105 and the up-gunned variants but not the lack of a MG for close in defense, requiring the infantry it is is accompanying for close in fighting.

All three were designed from the inception to be able to interface with a powered reload carrying trailer for in the event to prolonged fighting.

Code: [Select]
Type/Model:    P-106
Mass:          10 tons
Construction Options:  Fractional Accounting

Equipment:                                 Items    Mass
Int. Struct.:  4 pts Standard                0      1.00
Engine:        30 I.C.E.                     0      2.00
    Cruise MP:   3
     Flank MP:   5
Heat Sinks:      0 Single                    0       .00
Cockpit & Controls:                          0       .50
Crew: 1 Members                              0       .00
Armor Factor:   56 pts Standard              0      3.50

                          Internal    Armor
                          Structure   Value
   Front:                     1         14
   Left / Right Sides:        1      14/14
   Rear:                      1         14

Weapons and Equipment    Loc  Heat  Ammo   Items    Mass
--------------------------------------------------------
1 Trailer Hitch          Front               1       .00
1 Trailer Hitch          Rear                1       .00
Ammo or Cargo            Body                1      3.00
--------------------------------------------------------
TOTALS:                           0          3     10.00
Items & Tons Left:                           4       .00

Calculated Factors:
Total Cost:        60,500 C-Bills
Battle Value 2:    163 (old BV = 56)
Cost per BV:       371.17
Weapon Value:      0 / 0 (Ratio = .00 / .00)
Damage Factors:    SRDmg = 0;  MRDmg = 0;  LRDmg = 0
BattleForce2:      MP: 3T,  Armor/Structure: 0 / 2
                   Damage PB/M/L: -/-/-,  Overheat: 0
                   Class: GL;  Point Value: 2

It isn't that great, a fast truck might be better but it was hoped that the slightly more armored transporter might survive a bit longer in a defensive action or hang back to provide ammo as needed on the advance to the P-105 series vehicles or any other vehicle modified to have a trailer hitch.
"Any sufficiently rigorously defined magic is indistinguishable from technology."  - Larry Niven... far too appropriate at times here.

...but sometimes making sure you turn their ace into red paste is more important than friends.

Do not offend the chair leg of truth.  It is wise and terrible.

The GM is only right for as long as the facts back him up.

Khymerion

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    • The Iron Hack
Re: Light infantry support vehicle
« Reply #3 on: 24 April 2011, 08:44:02 »
Continuing the desire to provide additional support assets for slower moving infantry heavy formations, the P-107 series of wheeled transports are a bit more advanced and tailored to more high tech worlds due to it's use of a fuel cell engine while still striving to be affordable at the same time.  To deal with the fact that vehicles tend to seriously be hampered by water, the P-107 series possesses limited amphibious capabilities to allow them to move to locations otherwise unavailable, increasing the versatility and range of deployment with the squad of infantry they carry.  Designed from the onset to operate on lance level to support the platoon of infantry in the field.

Please forgive the rough nature of this, as using a fuel cell means that all the math had to be done by hand for calculating BV.

Designed from the onset to give the lighter regular infantry units a heavier support vehicle than the more commonly accepted APCs in service, the P-107 was developed.  While the light AC-2 is not the most powerful weapon, it gave rifle squads a longer ranged support weapon to soften up an enemy before having to charge in.  Never was the P-107a intended for front line combat alone, the foot infantry squad was always accepted as it's true weapon.

Code: [Select]
Name: P-107a
15 tons Wheeled
Internal Structure – 1.5 tons
Amphibious Equipment - 1 ton – Limited Amphibious
Engine – 55 Fuel Cell – 2 tons
Cruise – 5
Flank – 8
Control Equipment - .75 tons
Turret - .5 tons
Armor – 2.25 ton 36
Front – 10 2
Sides – 6/6 2/2
Turret – 9 2
Rear – 5 2

Weapons
Light AC-2 – Turret – 4 tons
Light AC-2 Ammo (45 rounds) – Body – 1 ton
Machine Gun – Turret - .5 tons
MG Ammo – Body - .5 tons
Cargo – 1 ton

BV - 176 pts

As a low end vehicle that would be available in number, inevitably modifications would  start to surface to use the chassis for additional roles.  One of the first that would come up be a mobile command vehicle.  While still retaining the majority of the chassis, the bulk of the internals has been replaced with a large amount of communications equipment.  While a three ton system would have sufficed, inefficient but costly electronics doubled the size of the equipment, bloating it to over six tons.  Despite the inefficiency, the P-107-K1 does it's job admirably as a rear echelon command vehicle while some commanders with access to better equipment would strip off the self defense MG for an additional ton of com gear, bringing the unofficial K2 variant up to battalion level equipment though this is frowned upon.

Code: [Select]
P-107-K1
15 tons Wheeled
Internal Structure – 1.5 tons
Amphibious Equipment - 1 tons – Limited Amphibious
Engine – 55 Fuel Cell – 2 tons
Cruise – 5
Flank – 8
Control Equipment - .75 tons
Turret - .5 tons
Armor – 2.25 ton
Front – 10
Sides – 6/6
Turret – 9
Rear – 5

Weapons
Communications Equipment – Body - 6 tons
Machine Gun – Turret - .5 tons
MG ammo – Body - .5 tons

And the P-107-K2.  Often, the crews would leave a painted wooden rod in the turret in place of the missing MG to keep visual inspections and distant scouts from telling the difference of the K2 from the more common K1 version at a cursory glance, useful in keeping the base inspector generals at bay.

Code: [Select]
P-107-K1
15 tons Wheeled
Internal Structure – 1.5 tons
Amphibious Equipment - 1 tons – Limited Amphibious
Engine – 55 Fuel Cell – 2 tons
Cruise – 5
Flank – 8
Control Equipment - .75 tons
Turret - .5 tons
Armor – 2.25 ton
Front – 10
Sides – 6/6
Turret – 9
Rear – 5

Weapons
Communications Equipment – Body - 7 tons

As the P-107 chassis was produced in larger numbers, the experimentation expanded to use the vehicle to improve the capabilities of the light ADA units that were starting to be considered.  While not the most desired chassis to use, a limited number of P-107-C1 vehicles were produced to test the concept of using the C3 command system to improve company and battalion level ADA batteries.

Code: [Select]
P-107-C1
15 tons Wheeled
Internal Structure – 1.5 tons
Amphibious Equipment - 1 ton – Limited Amphibious
Engine – 55 Fuel Cell – 2 tons
Cruise – 5
Flank – 8
Control Equipment - .75 tons
Turret - .5 tons
Armor – 2.25 ton
Front – 10
Sides – 6/6
Turret – 9
Rear – 5

Weapons
C3 Command Computer – Body – 5 tons
Machine Gun – Turret - .5 tons
MG Ammo – Body - .5 tons
Cargo – Body – 1 ton

Second line commanders sometimes got access to superior equipment and the final rare version of the P-107 would be assigned to those units.  A dedicated spotter, these long duration scout vehicles would have the miserable job of having to deploy out far ahead of a unit in hiding to try to quietly report on an enemy's movements or to try and tag a heavy unit for a laser guided strike by aircraft or artillery, tube or rocket alike.  Often, the S1 would have to lay in specially prepared locations to call in such a strike but immediately run from the heavy units though this was not always successful and the crews knew it.  Many assigned to this vehicle would gain a bizarre and fatalistic attitude towards a posting, often stripping off things like armor and weapons in a hope to uprate the engine to better survive such a deployment though this was always frowned upon by higher ups, the motor pool was more than happy to do so in the hopes that it might allow the crew to come back in one piece.  These variants were never standardized.  The one thing that was loved about the posting though was that the vehicle did have a comfortable and spacious interior in it's 'stock' configuration though this never lasted long.

Code: [Select]
P-107-S1
15 tons Wheeled
Internal Structure – 1.5 tons
Amphibious Equipment - 1 ton – Limited Amphibious
Engine – 55 Fuel Cell – 2 tons
Cruise – 5
Flank – 8
Control Equipment - .75 tons
Turret - .5 tons
Armor – 3.75 ton
Front – 18
Sides – 10/10
Turret – 15
Rear – 7

Weapons
TAG – Turret – 1 ton
Guardian ECM Suite – Body – 1.5 tons
Machine Gun – Turret - .5 tons
MG Ammo – Body – .5 tons
Cargo – Body – 3 tons
« Last Edit: 24 April 2011, 08:45:51 by Khymerion »
"Any sufficiently rigorously defined magic is indistinguishable from technology."  - Larry Niven... far too appropriate at times here.

...but sometimes making sure you turn their ace into red paste is more important than friends.

Do not offend the chair leg of truth.  It is wise and terrible.

The GM is only right for as long as the facts back him up.

Khymerion

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    • The Iron Hack
Re: Light infantry support vehicle
« Reply #4 on: 24 April 2011, 09:20:27 »
A saturation bombardment vehicle, the P-108 was designed from scratch to interface with P-106 series ammo transporter to provide a heavy pre-assault bombardment that may last up to five minutes before the attack.  In a defensive role, a P-108/P-106 combo battery can provide a withering storm of missiles that can slow or break up even the most determined of attackers.  In the advent that an enemy breaks through the lines, their life span is measured in mere seconds but the relatively low cost of the machines keeps them attractive.

Code: [Select]
Type/Model:    P-108
Mass:          25 tons
Construction Options:  Fractional Accounting

Equipment:                                 Items    Mass
Int. Struct.:  12 pts Standard               0      2.50
Engine:        80 I.C.E.                     0      5.00
    Cruise MP:   4
     Flank MP:   6
Heat Sinks:      0 Single                    0       .00
Cockpit & Controls:                          0      1.25
Crew: 2 Members                              0       .00
Armor Factor:    4 pts Standard              0       .25

                          Internal    Armor
                          Structure   Value
   Front:                     3          1
   Left / Right Sides:        3        1/1
   Rear:                      3          1

Weapons and Equipment    Loc  Heat  Ammo   Items    Mass
--------------------------------------------------------
1 Arrow IV System        Front    0    5     2     16.00
1 Trailer Hitch          Rear                1       .00
--------------------------------------------------------
TOTALS:                           0          3     25.00
Items & Tons Left:                           7       .00

Calculated Factors:
Total Cost:        600,000 C-Bills
Battle Value 2:    343 (old BV = 311)
Cost per BV:       1,749.27
Weapon Value:      26 / 26 (Ratio = .08 / .08)
Damage Factors:    SRDmg = 12;  MRDmg = 12;  LRDmg = 12

The ultimate goal of the P-105 through P-108 series vehicles as more than just to be light infantry support vehicles but to also be air mobile in a pinch, to be loaded up onto waiting VTOLs or transport planes quickly and ferried to front line quickly.  They were also intended to be used in combination with the P-109 series of light bridging vehicles.

Code: [Select]
Type/Model:    P-109
Mass:          10 tons
Construction Options:  Fractional Accounting

Equipment:                                 Items    Mass
Int. Struct.:  4 pts Standard                0      1.00
Engine:        30 I.C.E.                     0      2.00
    Cruise MP:   5
     Flank MP:   8
Heat Sinks:      0 Single                    0       .00
Cockpit & Controls:                          0       .50
Crew: 1 Members                              0       .00
Armor Factor:    8 pts Standard              0       .50

                          Internal    Armor
                          Structure   Value
   Front:                     1          2
   Left / Right Sides:        1        2/2
   Rear:                      1          2

Weapons and Equipment    Loc  Heat  Ammo   Items    Mass
--------------------------------------------------------
1 Heavy Bridgelayer      Front               1      6.00
1 Trailer Hitch          Rear                1       .00
--------------------------------------------------------
TOTALS:                           0          2     10.00
Items & Tons Left:                           5       .00

Calculated Factors:
Total Cost:        236,250 C-Bills
Battle Value 2:    54 (old BV = 29)
Cost per BV:       4,375.0

It is accepted that rivers are going to always be a major stopping point and defensive barrier against advances by an army, the ability of the P-109 to bring forward a folding bridge capable of carrying 45 tons safely or 90 tons under duress means that 45 tons is the design cap acceptable for most designs but with the intention that the bridge has to be able to lose half it's CF and still be useable under fire.  The fact that bridges are the first target of an attacker and always the target of sabotage by a defender makes the existence of the design requirements needed.  Thus, the light weight series was pushed forward.  It may take several Project 109s to build a big enough bridge but in light of the fact that a better bridge will probably be in ruins by this point in an assault, what other choice is available?
"Any sufficiently rigorously defined magic is indistinguishable from technology."  - Larry Niven... far too appropriate at times here.

...but sometimes making sure you turn their ace into red paste is more important than friends.

Do not offend the chair leg of truth.  It is wise and terrible.

The GM is only right for as long as the facts back him up.