OBT Forum

General BattleTech => General Discussion => AeroTech => Topic started by: Walegrin on January 05, 2011, 10:05:49 PM

Title: Dropship flotilla mothership - help?
Post by: Walegrin on January 05, 2011, 10:05:49 PM

OK, here is the deal....  I'm considering a mothership/baseship concept for dropships.  Basically something to help you project some space superiority without committing real warships.

I figure it'd probaly need to be a compact core design that puts most ofo the weight savings into stuff like a good cargo fraction to keep the DS's supplied, enough bunks to perhaps house some/most of the DS's crews, etc....

It is vague I know but I'm so outta touch right now with aerospace rules and such that I'm appealing for help :)

Title: Re: Dropship flotilla mothership - help?
Post by: CJvR on January 06, 2011, 06:39:14 AM

If you are going compact you might as well use a full warship since the savings will be insignificant between a battleship and a tender.

A good DS baseship would a large JS like the Monolith with a few improvements like more G-deck facilities, improved armaments and armor. Add a Mule or two to hold supplies, a CV and a DS flotilla. If you intend to use it in more active operations you probably want a LFB like my Megalith design on this forum.

Title: Re: Dropship flotilla mothership - help?
Post by: Ice Hellion on January 06, 2011, 02:58:44 PM

Quote from: Walegrin on January 05, 2011, 10:05:49 PM

I'm considering a mothership/baseship concept for dropships.  Basically something to help you project some space superiority without committing real warships.

I think this is called a JumpShip :P

Title: Re: Dropship flotilla mothership - help?
Post by: Takiro on January 06, 2011, 03:56:30 PM

I was contemplating such a Supercarrier design that would be able to deploy loads of fighters and gunboats. The only problem is the expense. The more docking collars the more it costs.

Title: Re: Dropship flotilla mothership - help?
Post by: CJvR on January 07, 2011, 03:23:45 PM

Quote from: Takiro on January 06, 2011, 03:56:30 PM

I was contemplating such a Supercarrier design that would be able to deploy loads of fighters and gunboats. The only problem is the expense. The more docking collars the more it costs.

You could use the reinforced repair bay. One DC sacrificed will net you 50000 ton of bay capacity, good way to lift small droppers.

Title: Re: Dropship flotilla mothership - help?
Post by: Takiro on January 07, 2011, 10:05:38 PM

I would like to include such a bay on this baseship/true carrier. Is the reinforced repair bay new tech or Star League era?

Title: Re: Dropship flotilla mothership - help?
Post by: Recusant on January 07, 2011, 11:49:17 PM

This is a BattleCarrier design I made a long while ago.
(feel free to use, alter, or be inspired by at your leisure)

    AeroTech 2 Vessel Technical Readout
                                  VALIDATED

Class/Model/Name:  Fenix Class BattleCarrier  
Tech:              Inner Sphere / 2820
Vessel Type:       WarShip
Rules:             Level 2, Standard design
Rules Set:         AeroTech2

Mass:              1,250,000 tons
K-F Drive System:  (Unknown)
Length:            1,240 meters
Sail Diameter:     1,495 meters
Power Plant:       Standard
Safe Thrust:       3
Maximum Thrust:    5
Armor Type:        Ferro-carbide
Armament:          
   20 Medium NPPC
   32 NL55
   15 AR10 Launcher
   10 NAC/20
   24 Large Pulse Laser
   12 LRM 20
   24 AMS
------------------------------------------------------------------------------
Class/Model/Name:  Fenix Class BattleCarrier  
Mass:              1,250,000 tons

Equipment:                                                            Mass  
Power Plant, Drive & Control:                                      225,000.00
Thrust:  Safe Thrust: 3
      Maximum Thrust: 5
Kearny-Fuchida Hyperdrive:  Compact (Integrity = 25)               565,625.00
Lithium Fusion Battery                                              12,500.00
Jump Sail (Detachable): (Integrity = 6)                                 92.00
Structural Integrity: 120                                          150,000.00
Total Heat Sinks:    3,375 Double                                    2,660.00
Fuel & Fuel Pumps:                                                   8,466.00
Bridge, Controls, Radar, Computer & Attitude Thrusters:              3,125.00
Fire Control Computers:                                                   .00
Food & Water:  (270 days supply)                                     1,644.50
Hyperpulse Generator:                                                   50.00
Armor Type:  Ferro-carbide  (2,472 total armor pts)                  2,999.50
                           Capital Scale Armor Pts
   Location:                            L / R
   Fore:                                453
   Fore-Left/Right:                  412/412
   Aft-Left/Right:                   412/412
   Aft:                                 371

Cargo:
   Bay 1:  Cargo (1)                                                65,000.00
           Small Craft (4) with 1 door                                 800.00
   Bay 2:  Fighters (24) with 2 doors                                3,600.00
           Fighters (24) with 2 doors                                3,600.00
   Bay 3:  Avenger Assault DropShips (36) with 3 doors              50,400.00
   Bay 4:  Cargo (1)                                                 6,500.00

DropShip Capacity:  8 Docking Hardpoints                             8,000.00
Grav Decks #1 - 4:  (90-meter diameter)                                200.00
Grav Decks #5 - 9:  (120-meter diameter)                               500.00
Grav Decks #10 - 12:  (65-meter diameter)                              150.00
Life Boats:  80 (7 tons each)                                          560.00
Escape Pods:  124 (7 tons each)                                        868.00

Crew and Passengers:
     80 Officers (70 minimum)                                          800.00
    255 Crew (215 minimum)                                           1,785.00
     95 Gunners (87 minimum)                                           665.00
     84 Marines                                                        420.00
     48 AeroSpace Pilots                                               240.00
    540 Avenger DropShip Crewmen                                     2,700.00
    116 Bay Personnel                                                     .00
Weapons and Equipment      Loc        SRV    MRV    LRV    ERV  Heat    Mass
------------------------------------------------------------------------------
2 Medium NPPC              Nose        18     18     18     18  270  3,600.00
2 NL55                     Nose        11     11     11     11  170  2,200.00
2 NL55                     Nose        11     11     11     11  170  2,200.00
3 AR10 (24 KW, 24 WS, 24 B)Nose         *      *      *      *   60  3,630.00
2 NAC/20(60 rounds)        Nose        40     40     40     --  120  5,024.00
2 Large Pulse Laser        Nose     2(18)  2(18)     --     --   20     14.00
2 Large Pulse Laser        Nose     2(18)  2(18)     --     --   20     14.00
2 LRM 20(240 rounds)       Nose     2(24)  2(24)  2(24)     --   12     60.00
1 AMS(240 rounds)          Nose        --     --     --     --    1     20.50
1 AMS(240 rounds)          Nose        --     --     --     --    1     20.50
1 AMS(240 rounds)          Nose        --     --     --     --    1     20.50
2 Medium NPPC              FL/R        18     18     18     18  540  7,200.00
2 Medium NPPC              FL/R        18     18     18     18  540  7,200.00
2 NL55                     FL/R        11     11     11     11  340  4,400.00
2 NL55                     FL/R        11     11     11     11  340  4,400.00
3 AR10 (24 KW, 24 WS, 24 B)FL/R         *      *      *      *  120  7,260.00
2 NAC/20(60 rounds)        FL/R        40     40     40     --  240 10,048.00
2 Large Pulse Laser        FL/R     2(18)  2(18)     --     --   40     28.00
2 LRM 20(240 rounds)       FL/R     2(24)  2(24)  2(24)     --   24    120.00
1 AMS(240 rounds)          FL/R        --     --     --     --    2     41.00
1 AMS(240 rounds)          FL/R        --     --     --     --    2     41.00
1 AMS(240 rounds)          FL/R        --     --     --     --    2     41.00
2 Medium NPPC              L/RBS       18     18     18     18  540  7,200.00
2 Medium NPPC              L/RBS       18     18     18     18  540  7,200.00
2 NL55                     L/RBS       11     11     11     11  340  4,400.00
2 NL55                     L/RBS       11     11     11     11  340  4,400.00
2 NAC/20(60 rounds)        L/RBS       40     40     40     --  240 10,048.00
2 Large Pulse Laser        L/RBS    2(18)  2(18)     --     --   40     28.00
2 Large Pulse Laser        L/RBS    2(18)  2(18)     --     --   40     28.00
1 AMS(240 rounds)          L/RBS       --     --     --     --    2     41.00
1 AMS(240 rounds)          L/RBS       --     --     --     --    2     41.00
1 AMS(240 rounds)          L/RBS       --     --     --     --    2     41.00
2 NL55                     AL/R        11     11     11     11  340  4,400.00
2 NL55                     AL/R        11     11     11     11  340  4,400.00
3 AR10 (24 KW, 24 WS, 24 B)AL/R         *      *      *      *  120  7,260.00
2 Large Pulse Laser        AL/R     2(18)  2(18)     --     --   40     28.00
2 LRM 20(240 rounds)       AL/R     2(24)  2(24)  2(24)     --   24    120.00
1 AMS(240 rounds)          AL/R        --     --     --     --    2     41.00
1 AMS(240 rounds)          AL/R        --     --     --     --    2     41.00
1 AMS(240 rounds)          AL/R        --     --     --     --    2     41.00
2 Medium NPPC              Aft         18     18     18     18  270  3,600.00
2 NL55                     Aft         11     11     11     11  170  2,200.00
2 NL55                     Aft         11     11     11     11  170  2,200.00
2 Large Pulse Laser        Aft      2(18)  2(18)     --     --   20     14.00
2 Large Pulse Laser        Aft      2(18)  2(18)     --     --   20     14.00
2 LRM 20(240 rounds)       Aft      2(24)  2(24)  2(24)     --   12     60.00
1 AMS(240 rounds)          Aft         --     --     --     --    1     20.50
1 AMS(240 rounds)          Aft         --     --     --     --    1     20.50
1 AMS(240 rounds)          Aft         --     --     --     --    1     20.50
1 Lot Spare Parts (1.24%)                                           15,560.00
------------------------------------------------------------------------------
TOTALS:                                            Heat: 6,656   1,250,000.00
Tons Left:                                                                .00

Calculated Factors:
Total Cost:        27,085,599,400 C-Bills
Battle Value:      175,770
Cost per BV:       154,096.83
Weapon Value:      124,355 (Ratio = .71)
Damage Factors:    SRV = 6,061;  MRV = 5,949;  LRV = 4,489;  ERV = 1,759
Maintenance:       Maintenance Point Value (MPV) = 740,112
                   (175,060 Structure, 342,462 Life Support, 222,590 Weapons)
                   Support Points (SP) = 509,800  (69% of MPV)
BattleForce2:      Not applicable

Title: Re: Dropship flotilla mothership - help?
Post by: CJvR on January 08, 2011, 09:38:16 AM

Quote from: Takiro on January 07, 2011, 10:05:38 PM

I would like to include such a bay on this baseship/true carrier. Is the reinforced repair bay new tech or Star League era?

Page 334 in TO.

Reinforced repair bays take 1 DC space / 50000 ton capacity.
Max number of bays on a JS or WS is 1.
It can hold a maximum of 2 DS and any number of satelites, SC or ASF. ( missed the 2 DS reg, it was hidden in standard bay rules - sorry )
The ship is able to do more than stationkeeping maneuvers with ships docked, the docked units mass counts as under the tug regs.
Must be assigned a facing and a minimum of one door, a repair bay is hit on weapons critical hits 50% of the original damage distributed evenly among the units in the bay.
Masses 10% of it's own holding capacity.
Are considered experimental tech, developed in 2750 by the TH and revived in 3065 by WOB.
Costs 30000 / ton of bay.