Archive for October, 2011

Tandem Launch

Sunday, October 30th, 2011

JPA in the News

Friday, October 28th, 2011



The Daily Mail

Turn to Starboard

Thursday, October 27th, 2011

Two Views of the Launch

Thursday, October 27th, 2011

You can really see the size difference in the balloons from launch to peak altitude. They start out ten feet in diameter and end up sixty feet in diameter.

View from Tandem

Tuesday, October 25th, 2011

Here’s a few clips while we sort through the video.


Highest Airship in the World!

Monday, October 24th, 2011

Saturday Tandem soared to 95,085 feet.  She flew perfect. We fired up the propellers and drove her around then softly touched down three hours later.

Propeller Balancing

Friday, October 21st, 2011

Before driving Tandem at the edge of space the propellers need to be balanced.  After balancing them with little pieces of tape I pull off and weight the tape. Then I weight out epoxy and use a syringe to eject it into the hollow tip of the blade. The blades are hollow carbon/Kevlar blades we make ourselves.  One prop set took 2.3 grams of epoxy and the other was way off and took 5.4 grams.