09-21-2020, 01:47 AM | #11 | ||
Join Date: Nov 2018
Location: Live in Seoul, Korea and I have never been abroad.
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Re: [Spaceships, Ultra-Tech] On-board Sensors
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09-21-2020, 02:00 AM | #12 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: [Spaceships, Ultra-Tech] On-board Sensors
My suspicion is that spaceships sensors are cheap and heavy because it's trying to make putting them on an interesting design decision within a resolution of 5% of ship's mass, and that's not a very likely situation. In general there's two methods for putting sensors on a vehicle: figure out what it needs and fits within your budget for the role of the vehicle (which will generally result in a sensor weight that is negligible relative to the vehicle), or you're just building a sensor carrier, in which case you don't care that your sensor costs ten times as much as the rest of the vehicle put together.
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09-21-2020, 02:36 AM | #13 |
Join Date: Aug 2004
Location: Wellington, NZ
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Re: [Spaceships, Ultra-Tech] On-board Sensors
Ah, sorry. "far off" means 'far away', and thus 'isn't far off' or 'not far off' means 'is fairly close', both in distance but also in other things (like weight in this case). So what I was saying was that once everything is considered, the Spaceships sensors being twice the weight of the UT ones is reasonable.
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Rupert Boleyn "A pessimist is an optimist with a sense of history." |
09-21-2020, 02:40 AM | #14 | |
Join Date: Nov 2018
Location: Live in Seoul, Korea and I have never been abroad.
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Re: [Spaceships, Ultra-Tech] On-board Sensors
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09-21-2020, 03:44 AM | #15 | |
Join Date: Aug 2004
Location: Wellington, NZ
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Re: [Spaceships, Ultra-Tech] On-board Sensors
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Even on battleships, where there were many more rangefinders yet the total percentage of displacement used by them was miniscule, there was a major concern with topweight from sensors. They were also a problem because of the volume and power consumed by the radars, something that's still an issue today (modern warships are often more volume limited than weight limited).
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Rupert Boleyn "A pessimist is an optimist with a sense of history." |
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09-27-2020, 11:37 PM | #16 |
Join Date: Nov 2018
Location: Live in Seoul, Korea and I have never been abroad.
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Re: [Spaceships, Ultra-Tech] On-board Sensors
Eventualy I made my house-rule sensors, Surveyers' Sensors Array, that is PESA, Ladar, Radar, Laser Communicator, Radar Communicator (all of these are the largest ones) in GURPS Ultra-Tech combined. It costs $456K and weighs a little bit light than 0.5ton (which is the weight of one system for SM+4 spacecraft).
I used the rule on GURPS Ultra-Tech p16 to calculate this equipment's price. It seems to be go well in my SM+4 Planet Surface Exploration Robot, but still I have questions. $456K is much more expensive even than SM+6 Enhanced Sensors Array (which costs $200K). How can I justify this difference? Last edited by Pectus Solentis; 09-28-2020 at 01:25 AM. |
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