[meteorite-list] Speed that meteors enter dark flight?

From: Mike Hankey <mike.hankey_at_meteoritecentral.com>
Date: Wed, 7 Mar 2012 13:45:07 -0500
Message-ID: <CAJak_qWGFRMGEC6C5DMMoYLozXa1jcnhVA5RjPGmg5xcq7A6NQ_at_mail.gmail.com>

the follow up to this question/answer I still wonder about is:

after dark flight begins, how many seconds will it take to completely
decelerate so that all forward momentum is lost after dark flight
starts.

for example: if the meteor goes dark at 4km/s how many seconds before
it will be at 0km/s and/or what does that deceleration curve look
like?

On Wed, Mar 7, 2012 at 1:14 PM, Chris Peterson <clp at alumni.caltech.edu> wrote:
> Ablation and incandescent flight typically end at about 3-4 km/s.
>
> Chris
>
> *******************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
>
> On 3/7/2012 10:43 AM, Graham Ensor wrote:
>>
>> Hi All,
>>
>> I have been wondering lately if there have been calculations done on
>> the speeds that meteors stop their hot flight and enter dark flight.
>>
>> What speed does a body have to reach before it generates a hot plasma
>> ball that shows as a fireball...or in other words how fast could a
>> body travel without becoming incandescent.
>>
>> I know this is going to vary depending on altitude or thickness of
>> atmosphere and possibly size.
>>
>> Has anyone seen data that shows this?
>>
>> Cheers,
>>
>> Graham
>
>
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Received on Wed 07 Mar 2012 01:45:07 PM PST