The second tethered test was very successful.
The new filling system proved to be much more secure then having
the entire balloon lift concentrated on the fill nozzle. Three
drops of the command module were made and the parachute
successfully opened each time. The first drop was done with the
electronics removed from the box and dead weight used instead. The
balloon was initially filled with less helium then was needed to
lift the stack so it had to be brought down and more helium was
added. For the second and third parachute drops, the dual tone
cutdown system was used. Calculations of the descent rate were also
made at this time.
|Date: ||July 8, 2003 7:30 AM|
|Launch Site: ||St. Paul Campus Research Plots :: Map :: Web Page|
|Launch Coordinates: ||Latitude: 44.98 N, Longitude: 93.23 W, Altitude: 237 Meters ASL|
|Mission Manager: ||Greg Nelson|
|Launch Director: ||Kevin Sweeney|
|Flight Director: ||Stephanie Soffa|
|Launch Team: ||Dr. Garrard, Jennifer Halsted, Dave Hultman, Ryan Nordell|
- Check complete stack weight before helium fill. Even though adding helium isn't difficult, it should be avoided.
- Transmitting the dual tone command must be done while the onboard transceiver is not transmitting. Otherwise the command is not received by the MIM.
- For tethered flights, at least six people are needed to easily handle the stack lines. Regular flights, however, shouldn't require as many people on the launch team.
Web site maintained by Adam Thoreen
Last updated: August 26, 2004