Altitude Adjustment - AT K550W and Two AT H128Ws - WAC Autumn Glare 2009

A rocket called "Altitude Adjustment", built by University of Washington students, launches from the away cell on a cluster of two AeroTech H128s and one AeroTech K550. This rocket looked cool, with "Delta IV" styling. Unfortunately, as near as I can tell, the two Hs lit and came to pressure instantly, while the K took it's sweet time to light, resulting in the interesting trajectory.

Category:

Travel & Events

Tags:

• Washington
• Aerospace
• Club
• WAC
• Mansfield
• University
• UW
• Rocket
• Rocketry
• High-Power
• Aerotech
• Cluster
• Launch
• Simav8r

[suxtaposition]

That was wiked!  Any idea what caused that?

[simav8r]

As far as I can tell, the two smaller H motors did what small motors do and came up to pressure instantly. The large K did what large motors sometimes do and took a while to come up to pressure. They were all supposed to light at once.

[simav8r]

Hmmm... looking at your channel, it seems that I don't need to simplify the explanation so much.

[emj0001]

I like Aerotech stuff fine, but for clusters and airstarts I like CTI ProX motos. They have the pyrodex slug in the core of the top grain. All they need to light is a low current electric match which comes with the reload. They come up to pressure INSTANTLY.

[johnnymopo]

The igniter on the K motor fell out as it was lighting. The Hs lit correctly, but the K was delayed. Nifty that it took off when it did, though.

[qzpm150]

Very interesting video. I know that you are suppose to delay the smaller motors until the larger gets up to pressure but I've actually seen what happens.