LBB2 and Jump-6

[robject]

Maybe we "need" a 150t hull...

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Hull Vol A B C ...
100 2 4 6
150 1 2 4
200 1 2 3 </pre>[/QUOTE]

 

[robject]

Maybe we "need" a 150t hull...

</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Hull Vol A B C ...
100 2 4 6
150 1 2 4
200 1 2 3 </pre>[/QUOTE]

 

[boomslang]

...j-drive-D (and powerplant-D) ...will require an Engineer (38tons of drives even without the maneuver option) for a minimum crew of two (Pilot and Engineer).

Nope. By the later printings, Engineers are only required on hulls 200 dtons and over. The 38 dtons (39 with the m-drive-A in there) would require one, save for the hull being deliberately undersized. When not in Mail service, the starship can be operated by a single crewman, the Pilot...

The hard mail idea is good, use it myself, but I still do the data bank tight-beam comm squirt too

Just so long as your crews don't mind getting fried to a crisp by the backscatter radiation, and so long as you mount several gigawatts of auxiliary powerplant to drive your 1000 Petabit/second transmitter, I see no problem with that.

And even with a maneuver drive I think there's still a need for tenders. The X-Boats are meant to jump fast and regularly. So you need to fuel them fast with the best purified fuel and swap out crews and sometimes do field maintenance beyond the basics just to make the thing go again. You don't want the X-Boat hanging around the starport waiting to fuel up or even worse skimming and the replacement crews will need somewhere to wait and the ones coming off ships somewhere to decompress for a bit till the next ride.

Nah, build them with "military" grade drives and run them on any old hydrogen you can crack locally. And remember, being fully legal on powerplant fuel, my Type XC Express Couriers can easily do a two-week loiter... as for the crews, let them wait around on a ground base (Startown!); surface-to-orbit travel times are trivial with Traveller m-drives...

 

[boomslang]

...j-drive-D (and powerplant-D) ...will require an Engineer (38tons of drives even without the maneuver option) for a minimum crew of two (Pilot and Engineer).

Nope. By the later printings, Engineers are only required on hulls 200 dtons and over. The 38 dtons (39 with the m-drive-A in there) would require one, save for the hull being deliberately undersized. When not in Mail service, the starship can be operated by a single crewman, the Pilot...

The hard mail idea is good, use it myself, but I still do the data bank tight-beam comm squirt too

Just so long as your crews don't mind getting fried to a crisp by the backscatter radiation, and so long as you mount several gigawatts of auxiliary powerplant to drive your 1000 Petabit/second transmitter, I see no problem with that.

And even with a maneuver drive I think there's still a need for tenders. The X-Boats are meant to jump fast and regularly. So you need to fuel them fast with the best purified fuel and swap out crews and sometimes do field maintenance beyond the basics just to make the thing go again. You don't want the X-Boat hanging around the starport waiting to fuel up or even worse skimming and the replacement crews will need somewhere to wait and the ones coming off ships somewhere to decompress for a bit till the next ride.

Nah, build them with "military" grade drives and run them on any old hydrogen you can crack locally. And remember, being fully legal on powerplant fuel, my Type XC Express Couriers can easily do a two-week loiter... as for the crews, let them wait around on a ground base (Startown!); surface-to-orbit travel times are trivial with Traveller m-drives...

 

[far-trader]

Originally posted by boomslang:
</font><blockquote>quote:</font><hr />...j-drive-D (and powerplant-D) ...will require an Engineer (38tons of drives even without the maneuver option) for a minimum crew of two (Pilot and Engineer).

Nope. By the later printings, Engineers are only required on hulls 200 dtons and over. The 38 dtons (39 with the m-drive-A in there) would require one, save for the hull being deliberately undersized. When not in Mail service, the starship can be operated by a single crewman, the Pilot...</font>[/QUOTE]Ah, right you are, I was forgetting that

As well as the reason for the Gunner and weapon

 

[far-trader]

Originally posted by boomslang:
</font><blockquote>quote:</font><hr />...j-drive-D (and powerplant-D) ...will require an Engineer (38tons of drives even without the maneuver option) for a minimum crew of two (Pilot and Engineer).

Nope. By the later printings, Engineers are only required on hulls 200 dtons and over. The 38 dtons (39 with the m-drive-A in there) would require one, save for the hull being deliberately undersized. When not in Mail service, the starship can be operated by a single crewman, the Pilot...</font>[/QUOTE]Ah, right you are, I was forgetting that

As well as the reason for the Gunner and weapon

 

[far-trader]

Originally posted by boomslang:
</font><blockquote>quote:</font><hr />The hard mail idea is good, use it myself, but I still do the data bank tight-beam comm squirt too

Just so long as your crews don't mind getting fried to a crisp by the backscatter radiation, and so long as you mount several gigawatts of auxiliary powerplant to drive your 1000 Petabit/second transmitter, I see no problem with that.</font>[/QUOTE]Ah well, I figure if any starship hull can survive gas giant skimming radiation levels they're pretty much proof against anything short of driving through a star

And as for the energy to power the comms, I drop that into the computer requirements where it is in CT/HG so as long as the computer has power it's good.

 

[far-trader]

Originally posted by boomslang:
</font><blockquote>quote:</font><hr />The hard mail idea is good, use it myself, but I still do the data bank tight-beam comm squirt too

Just so long as your crews don't mind getting fried to a crisp by the backscatter radiation, and so long as you mount several gigawatts of auxiliary powerplant to drive your 1000 Petabit/second transmitter, I see no problem with that.</font>[/QUOTE]Ah well, I figure if any starship hull can survive gas giant skimming radiation levels they're pretty much proof against anything short of driving through a star

And as for the energy to power the comms, I drop that into the computer requirements where it is in CT/HG so as long as the computer has power it's good.

 

[RainOfSteel]

Originally posted by Bill Cameron:
</font><blockquote>quote:</font><hr />Originally posted by RainOfSteel:
Can you link to the claim that J-6 LBB2 designs can be done at TL-9?

RoS,

Check out my post above.

Putting it simply, there are no TLs listed for drives in LBB:2 and a Model 1 computer is large enough to (separately) run 'Generate' and 'Jump6'.
</font>[/QUOTE]And thus my claim that I am not an expert in LBB2 design is bourne out.

 

[RainOfSteel]

Originally posted by Bill Cameron:
</font><blockquote>quote:</font><hr />Originally posted by RainOfSteel:
Can you link to the claim that J-6 LBB2 designs can be done at TL-9?

RoS,

Check out my post above.

Putting it simply, there are no TLs listed for drives in LBB:2 and a Model 1 computer is large enough to (separately) run 'Generate' and 'Jump6'.
</font>[/QUOTE]And thus my claim that I am not an expert in LBB2 design is bourne out.

 

[boomslang]

</font><blockquote>quote:</font><hr />By the later printings, Engineers are only required on hulls 200 dtons and over. The 38 dtons (39 with the m-drive-A in there) would require one, save for the hull being deliberately undersized. When not in Mail service, the starship can be operated by a single crewman, the Pilot...

Ah, right you are, I was forgetting that

As well as the reason for the Gunner and weapon

</font>[/QUOTE]I sent a private note to Sigg that it only took me about twenty years to realize that the secret was to step away from the hull sizes listed on the Drive Potential Table. The mathematics of LBB2 design result in those listed tonnages, and only those listed tonnages, being cost-efficient (even if you buy custom engineering sections); otherwise, you buy a hull that's too small to have as much payload as the next default size up, or else your drives are not being employed to their full potential. A 300-dton ship, for example, costs about 90% of the same drives fit in a 400-dtonner, and has about 90 dtons less usable payload space than the bigger, default hull size. You waste your money; might as well just go with a 200 dton hull...

It was only when I decided to start seriously cutting corners on crew that I had the epiphany that there may be special-case reasons to squeak in at just under 200 dtons -- specifically, shorting the crew roster... this changed my outlook. In fact, my standard, from-the-various-Alien-Modules 200 dton Jump-3 "Courier" mounts only m-drive-B, specifically to keep its engineering tonnage under 35 dtons, so the Engineer can be considered an "optional" crew position...

 

[boomslang]

</font><blockquote>quote:</font><hr />By the later printings, Engineers are only required on hulls 200 dtons and over. The 38 dtons (39 with the m-drive-A in there) would require one, save for the hull being deliberately undersized. When not in Mail service, the starship can be operated by a single crewman, the Pilot...

Ah, right you are, I was forgetting that

As well as the reason for the Gunner and weapon

</font>[/QUOTE]I sent a private note to Sigg that it only took me about twenty years to realize that the secret was to step away from the hull sizes listed on the Drive Potential Table. The mathematics of LBB2 design result in those listed tonnages, and only those listed tonnages, being cost-efficient (even if you buy custom engineering sections); otherwise, you buy a hull that's too small to have as much payload as the next default size up, or else your drives are not being employed to their full potential. A 300-dton ship, for example, costs about 90% of the same drives fit in a 400-dtonner, and has about 90 dtons less usable payload space than the bigger, default hull size. You waste your money; might as well just go with a 200 dton hull...

It was only when I decided to start seriously cutting corners on crew that I had the epiphany that there may be special-case reasons to squeak in at just under 200 dtons -- specifically, shorting the crew roster... this changed my outlook. In fact, my standard, from-the-various-Alien-Modules 200 dton Jump-3 "Courier" mounts only m-drive-B, specifically to keep its engineering tonnage under 35 dtons, so the Engineer can be considered an "optional" crew position...

 

[mike wightman]

If you build it at 199tons you can get a second stateroom and maneuver A.
Stick with 195t and dual occupancy and you could fit a maneuver B.

 

[mike wightman]

If you build it at 199tons you can get a second stateroom and maneuver A.
Stick with 195t and dual occupancy and you could fit a maneuver B.

 

[boomslang]

Ah well, I figure if any starship hull can survive gas giant skimming radiation levels they're pretty much proof against anything short of driving through a star

And as for the energy to power the comms, I drop that into the computer requirements where it is in CT/HG so as long as the computer has power it's good.

Clearly the bandwidth requirements IYTU are several orders of magnitude less than those IMTU...



I'd need something like a gamma-ray laser to have enough waveform to modulate at the 100 billion cycles/sec required by my throughput needs... and that, obviously, is more like a "weapon" than a "communications device"...

 

[boomslang]

Ah well, I figure if any starship hull can survive gas giant skimming radiation levels they're pretty much proof against anything short of driving through a star

And as for the energy to power the comms, I drop that into the computer requirements where it is in CT/HG so as long as the computer has power it's good.

Clearly the bandwidth requirements IYTU are several orders of magnitude less than those IMTU...



I'd need something like a gamma-ray laser to have enough waveform to modulate at the 100 billion cycles/sec required by my throughput needs... and that, obviously, is more like a "weapon" than a "communications device"...

 

[boomslang]

If you build it at 199tons you can get a second stateroom and maneuver A.
Stick with 195t and dual occupancy and you could fit a maneuver B.

Yeah, but at 199 dtons you end up with a fractional dton in your jump fuel requirement which is so inelegant as to be embarassing; it looks like you're trying to bend the rules or something!



Also, given that Mail is technically a "commercial service", I figured the crew pretty much has to go in single occupancy. Even though, in a ship like this, the revenue model is so unworkable that you're pretty much assuming a government Subsidy...

 

[boomslang]

If you build it at 199tons you can get a second stateroom and maneuver A.
Stick with 195t and dual occupancy and you could fit a maneuver B.

Yeah, but at 199 dtons you end up with a fractional dton in your jump fuel requirement which is so inelegant as to be embarassing; it looks like you're trying to bend the rules or something!



Also, given that Mail is technically a "commercial service", I figured the crew pretty much has to go in single occupancy. Even though, in a ship like this, the revenue model is so unworkable that you're pretty much assuming a government Subsidy...

 

[mike wightman]

T20 ship design has got me used to fractions

Besides, you can just round up to 80t of jump fuel.

I don't like using dual occupancy for staterooms in LBB2 designs, yet it's not a problem for me in High Guard

How about an extra small craft stateroom in the 195t model then? (and the maneuver A drive of course)

 

[mike wightman]

T20 ship design has got me used to fractions

Besides, you can just round up to 80t of jump fuel.

I don't like using dual occupancy for staterooms in LBB2 designs, yet it's not a problem for me in High Guard

How about an extra small craft stateroom in the 195t model then? (and the maneuver A drive of course)