More meteoric reentry thoughts Caleuche (28 Jan 2018 01:22 UTC)
Re: [TML] More meteoric reentry thoughts Tim (28 Jan 2018 02:15 UTC)
Re: [TML] More meteoric reentry thoughts Thomas Jones-Low (28 Jan 2018 02:33 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (28 Jan 2018 02:49 UTC)
Re: [TML] More meteoric reentry thoughts Tim (28 Jan 2018 03:08 UTC)
Re: [TML] More meteoric reentry thoughts Graham Donald (29 Jan 2018 12:12 UTC)
Re: [TML] More meteoric reentry thoughts Kelly St. Clair (29 Jan 2018 15:24 UTC)
Re: [TML] More meteoric reentry thoughts Graham Donald (30 Jan 2018 00:42 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (30 Jan 2018 05:31 UTC)
Re: [TML] More meteoric reentry thoughts Graham Donald (30 Jan 2018 10:22 UTC)
Re: [TML] More meteoric reentry thoughts Tim (30 Jan 2018 13:41 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (30 Jan 2018 22:07 UTC)
Re: [TML] More meteoric reentry thoughts Tim (31 Jan 2018 00:40 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (31 Jan 2018 01:39 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (31 Jan 2018 01:43 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (31 Jan 2018 05:12 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (31 Jan 2018 05:54 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (30 Jan 2018 22:26 UTC)
Re: [TML] More meteoric reentry thoughts Tim (31 Jan 2018 00:58 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (31 Jan 2018 05:18 UTC)
Re: [TML] More meteoric reentry thoughts Tim (31 Jan 2018 09:20 UTC)
Re: [TML] More meteoric reentry thoughts Thomas Jones-Low (31 Jan 2018 13:02 UTC)
Re: [TML] More meteoric reentry thoughts Bruce Johnson (31 Jan 2018 19:49 UTC)
Re: [TML] More meteoric reentry thoughts Bruce Johnson (31 Jan 2018 20:15 UTC)
Re: [TML] More meteoric reentry thoughts Tim (31 Jan 2018 22:46 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (28 Jan 2018 03:43 UTC)
Re: [TML] More meteoric reentry thoughts Phil Pugliese (28 Jan 2018 19:23 UTC)
Re: [TML] More meteoric reentry thoughts Kelly St. Clair (28 Jan 2018 19:43 UTC)
Re: [TML] More meteoric reentry thoughts Phil Pugliese (28 Jan 2018 20:11 UTC)
Re: [TML] More meteoric reentry thoughts Douglas Berry (29 Jan 2018 00:31 UTC)
Re: [TML] More meteoric reentry thoughts Edward Swatschek (28 Jan 2018 11:41 UTC)
Re: [TML] More meteoric reentry thoughts Ashley Greenall (28 Jan 2018 14:23 UTC)
Re: [TML] More meteoric reentry thoughts Jim Catchpole (28 Jan 2018 15:08 UTC)
Re: [TML] More meteoric reentry thoughts Rupert Boleyn (29 Jan 2018 02:33 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (29 Jan 2018 02:58 UTC)
Re: [TML] More meteoric reentry thoughts Rupert Boleyn (29 Jan 2018 03:10 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (29 Jan 2018 03:12 UTC)
Re: [TML] More meteoric reentry thoughts Kurt Feltenberger (29 Jan 2018 03:35 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (29 Jan 2018 03:42 UTC)
Re: [TML] More meteoric reentry thoughts Kurt Feltenberger (29 Jan 2018 03:55 UTC)
Re: [TML] More meteoric reentry thoughts Douglas Berry (29 Jan 2018 05:25 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (29 Jan 2018 06:35 UTC)
Re: [TML] More meteoric reentry thoughts Kurt Feltenberger (29 Jan 2018 06:56 UTC)
Re: [TML] More meteoric reentry thoughts Caleuche (29 Jan 2018 07:11 UTC)
Re: [TML] More meteoric reentry thoughts Tim (29 Jan 2018 08:59 UTC)
Re: [TML] More meteoric reentry thoughts Evyn MacDude (29 Jan 2018 03:33 UTC)

Re: [TML] More meteoric reentry thoughts Caleuche 28 Jan 2018 03:42 UTC

Personal Atmospheric Reentry Kit modeled: https://i.imgur.com/fgkt1Vi.png

The kit is very light, 106.5 kg, and I presumed 100 kg for the Traveller in space suit. I used a drag coefficient of 0.55 for the drogue chute and deploy it at 35 km, and then 1.5 for the full dome parachute and deploy it at 5 km, as described in the JTAS article. I selected a surface area of 11.34 m^2 for the drogue chute and 314.15 m^2 for the full dome chute.

Whoever designed the kit must have done some of the math for it, the drogue chute gets deployed just after heat flux falls off from its peak.

In addition to emergency deorbit, such kits and be used for low passage passengers. Rather than have to go through the bother of landing you can disembark them just outside the atmosphere and let them make their own way to customs.

-------- Original Message --------
 On January 27, 2018 6:33 PM, Thomas Jones-Low <xxxxxx@gmail.com> wrote:

>On 1/27/2018 9:15 PM, Tim wrote:
>>On Sat, Jan 27, 2018 at 08:22:15PM -0500, Caleuche wrote:
>>>So I turned to the next obvious option: lifepods. Somewhere I had
>>> once seen a drawing of a Traveller lifepod intended for reentry that
>>> was not pressurized (and open to space even) which basically was a
>>> mass of ablative material on the front, with a space for the
>>> Traveller to lay down on immediately behind it.
>>>That doesn't seem survivable.  You would want at least some shielding
>> from the radiative heat flux and later transsonic airflow around the
>> pod.
>>
>http://wiki.travellerrpg.com/Personal_Reentry_Kit
>
> This is one of the early Traveller pieces of cool technology. The idea is to
> have a very small frame and a package of foam for a really light weight package
> before being deployed.
>
>
>     Thomas Jones-Low
>
>Work: xxxxxx@softstart.com
> Home: xxxxxx@gmail.com
>
>The Traveller Mailing List
> Archives at http://archives.simplelists.com/tml
> Report problems to xxxxxx@simplelists.com
> To unsubscribe from this list please go to
>http://www.simplelists.com/confirm.php?u=0og3DHdoRHgL9lI7peOXYWnk6UF4c1zE
>