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Thank you for the donations over the past year (2024), it is much appreciated. I am still trying to figure out how to migrate the forums to another community software (probably phpbb) but in the meantime I have updated the forum software to the latest version. SSC has been around a while so their is some very long time members here still using the site, thanks for making SSC home and sorry I haven't been as vocal as I should be in the forums I will try to improve my posting frequency.

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Aspects of simulation - a couple of questions

(@coolhand)
Estimable Member

Ship dynamics.

I remember in frontier how sometimes i'd land a hulking great freighter somewhere, sell my cargo, fill it up with other stuff and try and take off, and just sit there cooking the pad... removing all the cargo never seemed to make any difference and i was basically stuck there unless i bought another ship with a different thrust to weight ratio.

realistically of course i'd have simply been able to lighten the ship, but frontier never seemed to take that into account. it would also mean that a pirate vessel with hardly anything in it, would have the manuvering edge over a similar ship with cargo or lots of equipment. Is it possible for ships to work like this in Pioneer?

Atmospheric drag / Dynamic pressure.

I've noticed that the air seems to have many times the resistance that it probably should, as my craft is quickly slowed in atmospheres, even earths relatively thin atmosphere, and at high altitudes where the static pressure is low.

Is this deliberate for gameplay purposes? since it arguably makes it safer to fly around a planet, however my own preference would be for reduced drag and keeping things more realistic.

Any info appreciated,

Thanks!

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Topic starter Posted : December 5, 2010 11:35
Geraldine
(@geraldine)
Famed Member

I think this behaviour was more down to a bug rather than representing power to weight ratios. If that happens again when playing the original Frontier, try switching views, look at the cargo screen ect. That used to work for me. 😉

As for Pioneer, I am not sure, perhaps Potsmoke, Tomm or S20dan could provide an answer? Good question though Steve! 🙂

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Posted : December 5, 2010 13:16
(@s2odan)
Noble Member
Quote:
Is it possible for ships to work like this in Pioneer?

They already do 😉

Try it out in a big ship with lots of cargo space. It will handle a little like a fighter when its empty, but like a freighter when full.

So there is actually an advantage to flying with minimal equipment now.

It brings up cool scenarios like: Under attack have to jettison cargo to stand a chance of escape; caught in gravity well, jettison all non-essential equipment to escape 🙂

Quote:

Atmospheric drag / Dynamic pressure.

I've noticed that the air seems to have many times the resistance that it probably should, as my craft is quickly slowed in atmospheres, even earths relatively thin atmosphere, and at high altitudes where the static pressure is low.

Is this deliberate for gameplay purposes? since it arguably makes it safer to fly around a planet, however my own preference would be for reduced drag and keeping things more realistic.

Any info appreciated,

I don't know if the drag and pressures are really so inaccurate, to me it just feels like ships are treated like bricks as far as aerodynamics are concerned. As opposed to sleek aerodynamic craft, so yes they slow down too quick.

The starting Eagle is capable of approx 2,600 m/s at sea level. That is very fast where realism is concerned. You would literally be tearing the atmosphere.

Bigger ships will go much faster in the atmo, as their engines are so much more powerful.

So when flying at max speed (2,600 m/s) at sea level, the Eagle experiences 6200000 N of drag... or 632.2 Tons of thrust/drag.

Hmm... ok thats f**k loads of drag. But remember thats when your travelling 7.8 times the speed of sound at sea level. And I believe drag is exponential, at least it is when dealing with water craft.

Just for fun I added some F14 engines to the starting Eagle so it has equal thrust to that aircraft but I kept the surface are the same... especially as im not entirely sure which setting denotes surface area to the game 😉

At sea level the maximum speed was 369 m/s or mach 1.1

Quote:
the official world record for low level supersonic flight is 988 mph at 300 ft (mach 1.30) by Darryl Greenamyer's ethyl-alcohol injected Red Baron RB-104 Starfighter (unofficially 1013 mph, or mach 1.33)

Hmm, unless I have messed up those tests then it looks like aerodynamics are actually more accurate than we thought.

ReplyQuote
Posted : December 5, 2010 14:56
(@coolhand)
Estimable Member
s20dan wrote:

So there is actually an advantage to flying with minimal equipment now.

It brings up cool scenarios like: Under attack have to jettison cargo to stand a chance of escape; caught in gravity well, jettison all non-essential equipment to escape 🙂

Yeah thats a great new aspect to the game, i couldn't really tell in the eagle due to its crazy thrust/weight anyway:D

s20dan wrote:

I don't know if the drag and pressures are really so inaccurate, to me it just feels like ships are treated like bricks as far as aerodynamics are concerned. As opposed to sleek aerodynamic craft, so yes they slow down too quick.

The starting Eagle is capable of approx 2,600 m/s at sea level. That is very fast where realism is concerned. You would literally be tearing the atmosphere.

Bigger ships will go much faster in the atmo, as their engines are so much more powerful.

So when flying at max speed (2,600 m/s) at sea level, the Eagle experiences 6200000 N of drag... or 632.2 Tons of thrust/drag.

Hmm... ok thats f**k loads of drag. But remember thats when your travelling 7.8 times the speed of sound at sea level. And I believe drag is exponential, at least it is when dealing with water craft.

Just for fun I added some F14 engines to the starting Eagle so it has equal thrust to that aircraft but I kept the surface are the same... especially as im not entirely sure which setting denotes surface area to the game 😉

At sea level the maximum speed was 369 m/s or mach 1.1

Quote:
the official world record for low level supersonic flight is 988 mph at 300 ft (mach 1.30) by Darryl Greenamyer's ethyl-alcohol injected Red Baron RB-104 Starfighter (unofficially 1013 mph, or mach 1.33)

Hmm, unless I have messed up those tests then it looks like aerodynamics are actually more accurate than we thought.

That all seems to make sense, i think in the eagle when you cut the engines, you definately seem to lose speed too quickly no matter what the altitude or speed - compared to similar speed /altitude in orbiter. if the aerodynamics are too brick like and drag is exponential, then its really going to have a big knock on effect at the higher speeds attainable by the powerful engines. and yeah any way you look at it, something like the eagle should really look like a fireball after about 2 seconds of thrust 😈

btw, probably a stupid question but how do i easily try out the other ships? 😆

ReplyQuote
Topic starter Posted : December 5, 2010 16:40
(@marcel)
Noble Member

Coolhand, you can press ctrl-m to get enough money to buy most of them, or you could edit the .lua file to reduce the price.

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Posted : December 5, 2010 17:06
(@s2odan)
Noble Member

And you can also repeatedly start a new game to get the ship you want to appear in the shipyard 😉

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Posted : December 5, 2010 17:29
(@coolhand)
Estimable Member
Marcel wrote:
Coolhand, you can press ctrl-m to get enough money to buy most of them, or you could edit the .lua file to reduce the price.

outstanding. thanks for the tip.

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Topic starter Posted : December 5, 2010 17:44
(@newtonianfreak)
Active Member

A possible workaround for heavy ships could be to buy "dropable take off boosters" at the starport. They would cost more on heavy worlds obviously...

@ coolhand : AFAIK, in frontier/FFE your ship was always supposed to have it's full weight.

EDIT : (since I like to rationalise everything in games) perhaps the assumption was that when a ship wasn't full of goods there was some tare to prevent changing dynamics.

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Posted : December 11, 2010 07:01