Search found 458 matches

by Ishmael
Wed Feb 14, 2018 1:53 pm
Forum: Traveller
Topic: GRAV plates and Grav Pong
Replies: 28
Views: 743

Re: GRAV plates and Grav Pong

It seems to me that having such sharp and rapidly changing gravity gradients inside a ship would be very hard on the ship structurally. Perhaps a hack into the computer controls for such a thing could cause fluctuations that set up destructive harmonics within the hull causing the ship to shake or v...
by Ishmael
Sun Jan 14, 2018 6:20 am
Forum: Traveller
Topic: In-atmosphere speed of manoeuvre drives
Replies: 23
Views: 746

Re: In-atmosphere speed of manoeuvre drives

Actually, the speed of sound is dependent on temperature, not density. ---------------------- speed of sound = sqrt ( 1.4 * 8.3144 * T * 1000 / M ) 1.4 is the adiabatic index for diatomic molecules ( that's over my head ) 8.3144 is the gas constant T is temperature in kelvin M is molar mass in g/mol...
by Ishmael
Fri Jan 12, 2018 11:31 pm
Forum: Traveller
Topic: Ship Design Philosophy
Replies: 2461
Views: 127941

Re: Ship Design Philosophy

Over a decease ago on CotI there was this thread: http://www.travellerrpg.com/CotI/Discuss/showthread.php?t=3797 That post seems to go with the following; hardpoints ~= vol_dtons^(2/3) * .093 * 'area mod' I use a slightly different method to find surface area*, but this is good too. * posted years ...
by Ishmael
Fri Jan 12, 2018 5:12 am
Forum: Traveller
Topic: Ship Design Philosophy
Replies: 2461
Views: 127941

Re: Ship Design Philosophy

Agreed, obviously. But the skin of the hull (the armour) would only increase by four, offsetting the increased internal structure. By TNE, that modelled this (accurately or not), the big ship need less mass fraction for armour and structure. Note that even "unarmoured" Traveller ships require signi...
by Ishmael
Thu Jan 11, 2018 11:57 am
Forum: Traveller
Topic: Ship Design Philosophy
Replies: 2461
Views: 127941

Re: Ship Design Philosophy

Only because Traveller has always ignored the square-cube law. Its the reason a Boeing 747 can't manoeuvre like a Zlin Acrobat. ( I really mean 'accelerate' as fast... not top speed ) There is no reason for a small craft to have higher acceleration than a large craft. There is reason to believe tha...
by Ishmael
Thu Jan 11, 2018 11:30 am
Forum: Traveller
Topic: In-atmosphere speed of manoeuvre drives
Replies: 23
Views: 746

Re: In-atmosphere speed of manoeuvre drives

Condottiere wrote:
Wed Jan 10, 2018 10:46 pm
Probably to the point where the atmospheric friction turns the hull skin to plasma.
This might be helpful for determining that....
https://physics.stackexchange.com/quest ... mperatures
by Ishmael
Wed Jan 10, 2018 2:23 am
Forum: Traveller
Topic: Ship Design Philosophy
Replies: 2461
Views: 127941

Re: Ship Design Philosophy

Spaceships: Weapon Systems, Incoming Ordnance and Dogfighting Range Missiles and torpedoes aren't really potentially faster than warships. Only because Traveller has always ignored the square-cube law. Its the reason a Boeing 747 can't manoeuvre like a Zlin Acrobat. ( I really mean 'accelerate' as ...
by Ishmael
Tue Dec 13, 2016 3:26 am
Forum: Traveller
Topic: Laser rifles in the military
Replies: 24
Views: 1976

Re: Laser rifles in the military

imtu, I use laser rifles as target designators for guided sniper munitions. The guided sniper munitions might be SEFOP round scaled for anti-personnel fired from a remote mortar. Or it might be a guided kinetic round from a more conventional sniper rifle fired from a different location.
by Ishmael
Tue Jun 23, 2015 1:04 am
Forum: Traveller
Topic: [House Rule] armour adjustments by dton range
Replies: 61
Views: 3386

Re: [House Rule] armour adjustments by dton range

coincidentally, load stress capacity also scales alongside the square/cube law.
Its why there are limits to how big something can be within a gravity field or under acceleration.
by Ishmael
Mon Jun 22, 2015 10:38 pm
Forum: Traveller
Topic: [House Rule] armour adjustments by dton range
Replies: 61
Views: 3386

Re: [House Rule] armour adjustments by dton range

all this fuss over what appears to be the use of the square/cube law?
sheesh.

why not go further and apply it to the number of hardpoints too, seeing as you'll be estimating surface area after a fashion.
by Ishmael
Sun Jun 14, 2015 12:59 pm
Forum: Traveller
Topic: [House Rule] Life support
Replies: 75
Views: 4170

Re: [House Rule] Life support

I had the idea that a ship's LS might scale in a way similar to Kleiber's Law. this might give an idea of power usage which could then be used to gauge roughly volume, cost and and mass. After all, LS and an organism's functions at basal metabolic rates are similar. It is a power function where ener...
by Ishmael
Sun Jun 14, 2015 12:49 pm
Forum: Traveller
Topic: [House Rule] Life support
Replies: 75
Views: 4170

Re: [House Rule] Life support

It is completely illogical to consider that GREATLY increased levels of tech wouldn't be brought to bear. It would be like asking why is it illogical to assume that the toilet problems homes had at TL 2 would NOT be greatly dealt with by TL 7-8... If someone wants to play Steam Punk in space, cool....
by Ishmael
Sun Jun 14, 2015 1:55 am
Forum: Traveller
Topic: [House Rule] Life support
Replies: 75
Views: 4170

Re: [House Rule] Life support

Yes, this example was always funny, if not completely illogical. why illogical considering that it has been true of closed-cycle ( subs and spaceships) conditions up to the present? "Another bad thing about living aboard the ISS is that every time someone farts or the like, that air has nowhere to ...
by Ishmael
Sun Jun 14, 2015 1:33 am
Forum: Traveller
Topic: [House Rule] Life support
Replies: 75
Views: 4170

Re: [House Rule] Life support

http://science.nasa.gov/science-news/science-at-nasa/2007/11may_locad3/ OTU example for a stinky spaceship.... "The major fault of the type S scout/courier is its air system. Although of respectable quality for life support, it begins to smell after about three weeks of use. Thereafter, the smell be...
by Ishmael
Sat Jun 13, 2015 12:07 pm
Forum: Traveller
Topic: [House Rule] Life support
Replies: 75
Views: 4170

Re: [House Rule] Life support

http://bubbleheads.blogspot.com/2010/06/new-scrubber-design.html A big issue with closed environments is smell. This article mirrors what a friend I had in the Navy told me about being deployed on boomers. At the end of a deployment, his wife wouldn't let him in the bedroom until he had washed the s...
by Ishmael
Fri Jun 12, 2015 9:53 am
Forum: Traveller
Topic: [House Rule] Life support
Replies: 75
Views: 4170

Re: [House Rule] Life support

life support needs to be broken down into 2 categories; volume based, such as heat/cooling-lighting-pressurization, and people based, such as food-water-scrubber capacity.
by Ishmael
Tue Jun 09, 2015 9:58 am
Forum: Traveller
Topic: ship design and hard points
Replies: 12
Views: 1015

Re: ship design and hard points

The usual design systems tell us that you get a single hardpoint per 100 dtons. But this seriously shortchanges smaller ships when compared to larger ships. For example, a 100dton cube ship gets a single hardpoint for its 732 square meter surface area, whereas a 100,000dton cube ship gets a hardpoin...
by Ishmael
Mon Jan 12, 2015 1:09 am
Forum: Traveller
Topic: Maneuver Drives but no grav plating
Replies: 44
Views: 3217

Re: Maneuver Drives but no grav plating

like the old Azhanti High Lightning deck plans?
by Ishmael
Thu Nov 20, 2014 12:33 am
Forum: Traveller
Topic: Traveller World War 2, what do you want to see?
Replies: 34
Views: 2577

Re: Traveller World War 2, what do you want to see?

s-100 schnellboot
Vosper mtb's
Elco and Higgins PT boats
coastal raiders
torpedo boat operations vs coastal convoys
dropping spies on enemy coasts
by Ishmael
Mon Aug 11, 2014 2:41 pm
Forum: Traveller
Topic: More affordable starships
Replies: 33
Views: 3353

Re: More affordable starships

Warn me when everyone finish remaking Mongoose Traveller with nano-detailed rules on EVERYTHING. I'll need a copy to block gamma radiation leakage while I continue playing the fun, simple Traveller. Seriously, T5 will be a pamphlet. So who is remaking Mongoose Traveller? Only Mongoose can do that. ...