Day 3

The first launching

Test 1

• Balloon went backwards and over the railing.
  

Test 2-4

• Balloon either went backwards or a few meters forwards.
  

Test 5

• Balloon was launched a few meters and bounced a few more.

Test 6

• Balloon was launched backwards landing on balcony barrier.
• Trebuchet begins to fall apart.
  

Test 7

• Pin got stuck on launch causing misfire. Possibly caused from pulling from an angle.
  

Test 8

• Pulled pin directly perpendicular to the holding bolts.
  
• Balloon went appx. halfway across the balcony and bounced it's way towards the end.
• Trebuchet falls apart.

Conclusions:

• The trebuchet needs to be glued together to hold up for multiple launches.
• Problem with the launch is either caused by the sling, the counterweight, or both.
  

What to try next time:

• Modify sling pouch.
• Shorten sling string.
• Add more weight.
  

Modifications:

• Glued trebuchet together.