|Frequently Asked Forum Questions|
|Search Older Posts on This Forum:|
Posts on Current Forum | Archived Posts
|Dreadnought deceleration calculations|
|Posted By: Vincent <firstname.lastname@example.org>||Date: 1/24/09 9:19 a.m.|
Since Bungie were obliging enough to give us some numbers (albeit vague ones), I thought I'd try and work out a rough idea of it's deceleration. Fair warning: several assumptions from this point on.
We are given that the dreadnough takes 9 days (777600 seconds) to get to Earth.
It "arrives in the sol system" - I'll assume for now it starts at the edge of the system, which I'll put at just past the kuiper belt, or about 50AU (50 x 149.60 x 109 metres) away.
It then proceeds to Earth at "near relativistic speeds" - call it .99c (0.99 x 3.00 x 108 metres/second) for now, but could be much lower - I'll assume it starts at that speed and decelerates uniformly the whole distance.
----Warning: maths to follow!----
We can work out acceleration with the formula s=ut+½at², where s=distance, u=initial speed, t=time, and a=acceleration. So:
50 x 149.60 x 10^9 = (0.99 x 3.00 x 108 x 777600) + (0.5a x 777600²)
What this tells us is that, assuming all assumptions are correct, the dreadnought would have had to decelerate at 739ms-2, or 75 times the force of gravity.
You can of course change this number by changing the speed we assume it to start at, the distance it travels, etc. - this is merely an idea of the kind of numbers we're talking about.
Though I do wonder why Truth took almost twice as long getting to Earth as he did travelling from High Charity...
|Dreadnought deceleration calculations||Vincent||1/24/09 9:19 a.m.|
|Re: Dreadnought deceleration calculations||urk||1/24/09 3:36 p.m.|
|That's irrelevant...||stan||1/24/09 4:22 p.m.|
|Re: Dreadnought deceleration calculations||BlueNinja||1/24/09 4:56 p.m.|
|Re: Dreadnought deceleration calculations||SonofMacPhisto||1/24/09 5:01 p.m.|
|Re: Dreadnought deceleration calculations||scarab||1/25/09 5:40 a.m.|
|Re: Dreadnought deceleration calculations||Stephen L. (SoundEffect)||1/24/09 9:40 p.m.|
|Re: Dreadnought deceleration calculations||Devil mingy||1/24/09 10:06 p.m.|
|Re: Dreadnought deceleration calculations||Ragashingo||1/24/09 10:55 p.m.|
|Re: Dreadnought deceleration calculations||SonofMacPhisto||1/25/09 12:22 a.m.|
|Ah, touché *NM*||Vincent||1/25/09 3:11 a.m.|
The HBO Forum Archive is maintained with WebBBS 4.33.