Author Topic: Military Jump Drives and Commercial Engines  (Read 796 times)

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Offline Felius (OP)

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Military Jump Drives and Commercial Engines
« on: January 21, 2022, 07:46:04 PM »
Making a Stealth Explorer Ship for prolonged operations, so I'm using a commercial engine for fuel efficiency, but gave it a military jump drive for space efficiency (see below for ship design).

Except now it can't jump on its own. Says there isn't a jump drive capable of allowing commercial engines to jump. I've double-checked, and yes, the jump engines do have enough space capacity for the ship's size.

I thought that it used to be that military jump drives could have any and all ships of the appropriate size to jump, even if it had commercial angines. So, to ask: Did something change? Am I remembering things wrong?

The ship in question for reference, in case I'm just missing something obvious:
Code: [Select]
DSS Gaspar de Portolà  (Infanta Cristina class Deep Space Survey Ship)      14,997 tons       380 Crew       3,689.5 BP       TCS 15    TH 192    EM 0
5334 km/s    JR 3-50      Armour 5-54       Shields 0-0       HTK 98      Sensors 180/18/3/3      DCR 50      PPV 4
Maint Life 5.97 Years     MSP 8,075    AFR 90%    IFR 1.2%    1YR 388    5YR 5,818    Max Repair 1000.00000 MSP
Magazine 164   
Captain    Control Rating 3   BRG   AUX   SCI   
Intended Deployment Time: 59 months    Morale Check Required   

Explorer J15000(3-50) Military Jump Drive     Max Ship Size 15000 tons    Distance 50k km     Squadron Size 3

QuietUpSized Commercial Inertial Fusion Drive  EP1600.00 (1)    Power 1600.0    Fuel Use 1.12%    Signature 192.0000    Explosion 5%
Fuel Capacity 500,000 Litres    Range 536.7 billion km (1164 days at full power)

CIWS-250 (1x8)    Range 1000 km     TS: 25,000 km/s     ROF 5       
Connolly-Bruce Size 4.0 Missile Launcher (1)     Missile Size: 4.0    Rate of Fire 10
Montgommeri Electronics Industries Missile Fire Control FC20-R1 (1)     Range 20.3m km    Resolution 1
Aldous Huxley Anti-Ship Missile (41)    Speed: 25,000 km/s    End: 13.9m     Range: 20.9m km    WH: 9    Size: 4.00    TH: 150/90/45

Lundgren Electronics Active Search Sensor AS20-R1 (1)     GPS 72     Range 20.3m km    MCR 1.8m km    Resolution 1
CivClass EM Sensor EM1.0-18.0 (1)     Sensitivity 18.0     Detect Sig Strength 1000:  33.5m km
Morris-Hopkins Thermal Sensor TH10-180 (1)     Sensitivity 180     Detect Sig Strength 1000:  106.1m km
Advanced Geological Sensors (1)   3 Survey Points Per Hour
Advanced Gravitational Sensors (1)   3 Survey Points Per Hour
ELINT Module (1)     Sensitivity 14     Detect Sig Strength 1000:  29.6m km
Cloaking Device: Class cross-section reduced to 5.00% of normal

Compact ECCM-3 (1)         ECM 40

Missile to hit chances are vs targets moving at 3000 km/s, 5000 km/s and 10,000 km/s

 

Offline TheTalkingMeowth

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Re: Military Jump Drives and Commercial Engines
« Reply #1 on: January 21, 2022, 07:55:53 PM »
In C#, military jump drives can only jump military engined ships. Commercial drives can only jump commercial engined ships.
 

Offline Felius (OP)

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Re: Military Jump Drives and Commercial Engines
« Reply #2 on: January 21, 2022, 08:01:01 PM »
Guess I only found the outdated stuff about it instead. Guess I'll SpaceMaster my design into being viable with different engines (and probably more fuel capacity).
 

Offline kilo

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Re: Military Jump Drives and Commercial Engines
« Reply #3 on: January 22, 2022, 06:08:37 AM »
In C#, military jump drives can only jump military engined ships. Commercial drives can only jump commercial engined ships.

That is all fine, but right now, it is not possible to build a civilian jump tender for the war ships, as you are only allowed to carry one jump engine per ship. This means your tender cannot follow where your fleet is going. Maybe this can be changed? It required me to build two jump ship classes. One that got the war ships into battle and out and one that got the jump ships for the military vessels in and out. It feels kind of stupid though.
 

Offline Garfunkel

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Re: Military Jump Drives and Commercial Engines
« Reply #4 on: January 22, 2022, 07:02:10 AM »
This has now been changed. In 2.0, MIL-JE can jump both types of engines while COM-JE can only jump commercial engines.
 

Offline nuclearslurpee

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Re: Military Jump Drives and Commercial Engines
« Reply #5 on: January 22, 2022, 10:35:11 AM »
This has now been changed. In 2.0, MIL-JE can jump both types of engines while COM-JE can only jump commercial engines.

Notably since both classes of jump drive are civilian components, we can now build small (10k to 20k) civilian tenders to escort military fleets, allowing us to RP early game powers which don't develop a (squadron) jump assault capability but still need to transport their fleets through JPs. Very useful change.
 

Offline Garfunkel

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Re: Military Jump Drives and Commercial Engines
« Reply #6 on: January 22, 2022, 10:40:58 PM »
Yup, plus it allows to make 3 tier travel system:

Tier 1: safe core worlds where civilians operate freely - systems connected by stabilized jump points
Tier 2: guarded outer worlds where only the government operates lot of big commercial ships - systems connected by (large) commercial jump tenders
Tier 3: unsecured frontier worlds where only military ships and small commercial exploration ships operate - systems connected by (small) military jump tenders

 

Offline Migi

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Re: Military Jump Drives and Commercial Engines
« Reply #7 on: January 25, 2022, 05:19:04 PM »
I normally use an engine power ratio of 55% for my survey ships so that the engines qualify as military while using minimal fuel. They aren't hyper efficient but they do the job.

In a past game (I don't remember what version it was, maybe 1.11?), I think I managed to get military and commercial jump capability in the same fleet by doing the following:
The jump tender was commercial engined, with a commercial jump drive and a tractor beam. It towed a space station (so I could build it on the ground without building yet another shipyard) which contained the military jump drive.
 
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Offline xenoscepter

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Re: Military Jump Drives and Commercial Engines
« Reply #8 on: January 25, 2022, 05:33:50 PM »
I normally use an engine power ratio of 55% for my survey ships so that the engines qualify as military while using minimal fuel. They aren't hyper efficient but they do the job.

In a past game (I don't remember what version it was, maybe 1.11?), I think I managed to get military and commercial jump capability in the same fleet by doing the following:
The jump tender was commercial engined, with a commercial jump drive and a tractor beam. It towed a space station (so I could build it on the ground without building yet another shipyard) which contained the military jump drive.

 --- I did a thing whereby I put the Military Jump Drive in an engineless commercial station, then used a Commercial Hangar to transport it. The game only checked for engine type, so the engineless station worked fine while the carrier/tender carried a Commercial Jump Drive for itself and whatever else it was going to move. It was pretty space efficient too, overall.