Recap of EOSS-79a/79b
LAUNCH DATE: June 19, 2004
- EOSS-79A LAUNCH TIME: 07:30 am MDT (13:30 UTC)
- EOSS-79B LAUNCH TIME: 08:29 am MDT (14:29 UTC)
LAUNCH SITE: Windsor, Co (Directions)
EOSS-79A Track
Blue = Actual Track
Green = Predicted Ascent Phase
Red = Predicted Descent Phase
Maps made with
MapPoint
Prediction made with
Balloon Track
Launch Site - Windsor
-----------------------
Launch Point: 40.4737° lat. -104.9623° long.
Ascent Rate: 1000 feet per minute
Descent Rate: 910 feet per minute
Altitude: 4931 feet
Predicted Landing Site
-----------------------
Landing Point: 40.8433° lat. -103.9362° long.
Altitude: 4501 feet
Flight Time: 131 Minutes
Bearing: 64.3° True
Range: 59.5 Mi.
Actual Landing Site
-----------------------
Landing Point: 40.7385° lat. -104.0665° long.
Bearing: 68.4° True
Range: 50.4 Mi.
Difference from Predicted to Actual Landing Site
--------------------------------------------------
Bearing: 223.3° True
Range: 9.9 Mi.
EOSS-79B Track
Blue = Actual Track
Green = Predicted Ascent Phase
Red = Predicted Descent Phase
Maps made with
MapPoint
Prediction made with
Balloon Track
Launch Site - Windsor
-----------------------
Launch Point: 40.4737° lat. -104.9623° long.
Ascent Rate: 1000 feet per minute
Descent Rate: 910 feet per minute
Altitude: 4931 feet
Predicted Landing Site
-----------------------
Landing Point: 40.8433° lat. -103.9362° long.
Altitude: 4501 feet
Flight Time: 131 Minutes
Bearing: 64.3° True
Range: 59.5 Mi.
Actual Landing Site
-----------------------
Landing Point: 40.7723° lat. -103.8169° long.
Bearing: 70.7° True
Range: 63.5 Mi.
Difference from Predicted to Actual Landing Site
--------------------------------------------------
Bearing: 128.1° True
Range: 7.9 Mi.
EOSS Frequencies:
Global Frequencies
- Preflight Net:
- 147.225 MHz 8 pm MDT preceding Friday night
- 145.160 MHz simulcast in the Springs
- 146.640 MHz will serve as a backup frequency
- Tracking and Recovery
Operations
- 449.450 MHz RMRL Repeater (103.5 Hz
tone)
- 146.550 MHz simplex (same simplex for field and launch ops)
- Repeater Coverage Spreadsheet -
Benjie has created this spreadsheet that shows many of the repeaters in the
expected recovery area.
- There may be FRS operations see THIS PAGE
for a list of channel numbers and their associated UHF Frequencies.
- 7.228 MHz HF
EOSS-79 A (Primary EOSS system)
EOSS-79 B (Montana State University)
- APRS
- 145.600 MHz (Kenwood D7)
- 445.975 MHz (TinyTrack3)
Flight Systems:
EOSS-79A
| Balloon Manufacturer |
Kaymont |
| Balloon Type |
latex |
| Balloon Size |
3000 gram |
| Payload |
@ 25.3 lbs. |
| Free Lift % |
calculated at fill |
| Ascent Rate |
1176.8 fpm avg. |
| Descent Rate |
1318 fpm avg. (10K - 5K) |
| Parachute |
10 ft. diameter |
| Peak Altitude |
85,540 ft. ASL |
| Launch Conditions |
calm |
EOSS-79B
| Balloon Manufacturer |
Kaymont |
| Balloon Type |
latex |
| Balloon Size |
1200 gram |
| Payload |
< 12 lbs. |
| Free Lift % |
calculated at fill |
| Ascent Rate |
1127.9 fpm avg. |
| Descent Rate |
1078.45 fpm avg. (10K - 7.5K) |
| Parachute |
10 ft. diameter |
| Peak Altitude |
87,831 ft ASL |
| Launch Conditions |
calm |
Payload Configuration:
EOSS Grid:
| Location |
Grid X |
Grid Y |
| Hiway 71 and 14 (west intersection) |
70 |
40 |
| Ft. Lupton |
10 |
5 |
| Rockport |
11 |
60 |
| Nine Mile |
75 |
8 |
| Launch Point |
2.62 |
30.57 |
| Predicted Touchdown |
78.8 |
56.9 |
Tactical Callsigns:
| Tactical |
Callsign |
Name |
Notes |
| Alpha |
WA0GEH |
Marty |
coordinator |
| Alpha |
WA0GEH by N0NDM |
Larry |
asst. coordinator |
| Bravo |
KB0YRZ |
Chris |
|
| Bravo (2) |
KC0RPS |
James |
|
| Charlie |
K0JLZ |
Jim |
|
| Charlie (2) |
K0AEM |
Richard |
|
| Delta |
N0PUF |
Dan |
|
| Echo |
K0ANN |
Ann |
|
| Foxtrot |
KC0LZE |
Shawn |
|
| Golf |
AC0AK |
Mark |
|
| Golf (2) |
KC0QYU |
Kyle |
|
| Hotel |
W0CBH |
Benjie |
triangulator, asst. coordinator |
| Juliet |
KC0RIA |
Mark |
Air One Helio |
| Kilo |
N0LP |
Nick |
Ground Station |
Internet Gateway Stations:
as seen on Findu.Com
For W5VSI-11
- K0YG-7 - Mark Patton
- KI0KN - James Cizek
For KD7NPX-11
- K0YG-7 - Mark Patton
- K0UT-3 - Bill Beach
EOSS wishes to express our sincere appreciation to those stations above who
iGated the balloon APRS telemetry onto the internet.
We are relying heavily on real time position information available on the net
to allow the FAA controllers to have up to the minute location data to assist
them in air traffic control.
The redundant stations for the balloon provide excellent coverage. If you go
to findu.eoss.org and enter in the callsigns of any of EOSS's APRS payload
systems to retrieve the raw position data you will note that many of these
stations contribute to the flow of information. In the event of a station
dropping out momentarily, the others pick up the slack quite nicely.
Thanks again guys! The FAA (and EOSS) are very grateful for your assistance
in this endeavor.
Just to give credit where credit is due:
Open these files and see how each i-gate station contributed to the FAA
reporting for EOSS-76. The i-Gate is the last call sign before the actual packet
APRS data.
Photos:
Launch Site
Landing Sites
- Photos by Jim Zimmerman, KØJLZ and Richard Beggs, KØAEM
- Photos by Marty Griffin, WAØGEH
- Photos by Jim Langsted, KCØRPS
Video:
Audio:
Data:
Plain Text Logs
These log files contain a concatenation of multiple log files from multiple
sources.
The log for eoss-79b is taken strictly from Findu.com as it adds the
timestamp missing in a Kenwood D7 packet. This time stamp is based on the time
of packet arrival at Findu.com, not the GPS time the position data was taken.
So, accuracy is degraded. But, the time stamp is still a good indication to base
time intervals between packets used in determining various rates between
packets.
Ground Station Log (contains both 79A and 79B)
EOSS-79A
EOSS-79B
Comma Delimited Spread Sheet Files
There are two versions of the data for EOSS-79B. The first is the more
complete record as obtained from all our iGate stations via Findu.com. The
second, while less complete is the data captured at my home QTH (NØKKZ). The
time stamps might be slightly more accurate as they are generated immediately
upon packet arrival via RF. Findu packets are time stamped by the arrival of
packets to the APRS servers on the internet (a slight delay). My computers
update their internal clocks every 10 minutes from NIST and the timestamps are
created by the computers, not the APRS system within the balloon borne Kenwood
D7.
EOSS-79A
EOSS-79B
Recaps:
Marty's letter to the Land Owners!
Benjie Campbell's recap
The webmaster's and flight trajectory forecaster's
recap. - Two hats, one guy.
Notes:
Our Customers
EOSS-79 supports the NASA Space Grant BalloonSat Workshop, an event sponsored
by Colorado Space Grant annually since 2002, where faculty from other NASA Space
Grant colleges all over the US come to learn how to set up and teach a course
like CU's one-semester undergrad "Gateway to Space". Attendees are teamed up to
design and build BalloonSats from kits, not unlike the ones that the Gateway
students do.
BalloonSats are typically 10 cm cubes weighing up to 600 gm (1.32#) each with
vertical thru-tube flight string attachments. Each carries a still camera with a
shutter timer and another experiment that gets logged by an on-board Hobo.
This year, Chris had some 43 attendees sign up in January. There have been a few
last-minute cancellations, however. So until I hear further from Chris, we're
planning on flying a total of 8 BalloonSats on EOSS-79 -- 4 on each of two
strings.
EOSS-79A will be operated by EOSS, while EOSS-79B will be managed by Mt. State
U. EOSS will handle FAA reporting for both, and will help out on tracking and
recovery as required.
In order to minimize logistics issues with getting students from launch to
recovery, Chris Koehler would prefer to launch both balloons simultaneously. But
the FAA says that's OK only if we get 'em both on the deck by 0930; any later
than that, we'll have to space the lauches by 40 minutes to avoid having two
balloons in heavy arrival airspace at the same time.
HF Radio
Usually starts 30 minutes, frequency posted above
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