[HoustonHam] FW: LIFTOFF!!!

[Mark Bayern]

>> …we
>> recovered the entire payloads…though they DID take a whack on the way
>> down…in the last 20000 ft it took about 2 mins to go through that…about
>> 120mph!! OUCH! I am putting together a story for next weeks Newsline with

When we reached the recovery site the packages were strung out across
two trees. I really doubt they took that much of a whack. By the time
we had them out of the trees the 1/4" wooden dowel that was a mount
for a 440MHz quarter wave was broken, but that has happened on the
last three recoveries.

The GPS data for the final stages of the descent shows a rate of
descent of about 22mph.

~~~~

This is from the last data we recorded from W5ACM-9 on the final descent:

$GPGGA,172952,2912.6498,N,09644.5749,W,1,12,0.7,3058.2,M,-22.2,M,,*46
$GPGGA,173202,2912.6563,N,09645.4241,W,1,12,0.7,1663.6,M,-22.2,M,,*49
$GPGGA,173352,2912.8399,N,09645.7203,W,1,12,0.7,609.9,M,-22.2,M,,*77

Using this data we can calculate the rate of descent for these four
minutes (all times are UTC from the package's -9 GPS):

Altitudes:

@17:29:52         3058.2meters	10033.4feet
@17:32:02	        1663.6meters	5458.0feet	
@17:33:52         609.9meters	2001.0feet

rate of descent is:

  between 17:29 and 17:32, time 2mins 4seconds, distance 4574.4feet,
rate 2213.4feet/min
  between 17:32 and 17:33, time 1min 50seconds, disatnce 3457.0feet,
rate 1885.6feet/min

  avg rate of descent for this 4 minute period was 2008.1feet/min or
22.8 miles/hour


Mark  AD5SS




On Sat, Aug 20, 2011 at 11:00 PM, Chris Boone <Cboone at earthlink.net> wrote:
>> -----Original Message-----
>> Subject: Re: [50mhz] LIFTOFF!!!
>>
>> WENT GREAT!!! Drifted maybe 15 miles to the west and 90K height before
>> coming down….What a ride!! The 6m signal was copied over 500miles
>> away..the APRS was copied 1000miles to the west!!! The 28Mhz beacon was
>> copied in GA for a brief while….There was 75+ folks there….and it all went
>> smooth..the video from the camera on the bottom payload will be on the
>> W5ACM.net site soon….I understand the video was AWESOME…we
>> recovered the entire payloads…though they DID take a whack on the way
>> down…in the last 20000 ft it took about 2 mins to go through that…about
>> 120mph!! OUCH! I am putting together a story for next weeks Newsline with
>> some the audio from the APRS systems (there were 3 on UHF alone) and
>> some of the crossband audio…I net controlled the 2m to 6m remote
>> base for a while…the audio was great on 6AM…it sounded like 125% Positive mod like AM
>> broadcast stations use…which helped since the 6m signal was only 450mW!
>> Chris
>> WB5ITT
>>