Search found 4 matches

by Growlzler
Sun Dec 24, 2017 7:27 am
Forum: Pulse detonation engine forum
Topic: SpaceX Falcon 9 Iridium Vandenberg Launch
Replies: 0
Views: 907

SpaceX Falcon 9 Iridium Vandenberg Launch

After watching the SpaceX Falcon 9 Iridium launch from Vandenberg last night several times it became apparent that the stage separation resulted in what can only be described as some very strange behavior of the separated stage. I came away with the distinct impression that either this was indeed st...
by Growlzler
Mon Jun 16, 2014 6:25 am
Forum: Pulse detonation engine forum
Topic: PREDATOR - valveless PDE build blog
Replies: 35
Views: 16545

Re: PREDATOR - valveless PDE build blog

Hi Growlzler, aah, as I understand, you propose to bias a direct current just below the trigger point of the coil? Is that right? This seems to be a very good idea... thanks, I will try...if I got it right? Other ideas? Hi Zono, Yes, biasing the coil is the basic idea. Also applying a short supervo...
by Growlzler
Sat May 31, 2014 7:00 pm
Forum: Pulse detonation engine forum
Topic: PREDATOR - valveless PDE build blog
Replies: 35
Views: 16545

Re: PREDATOR - valveless PDE build blog

20 ms action time is a problem.

One idea is to apply a constant current through the coil - the idea is to decrease the mechanical actuation time when full current is applied by the Mosfet triggers. A little experimentation will be needed to reveal the appropriate setpoints.

Growlzler
by Growlzler
Tue Dec 25, 2012 4:38 am
Forum: Pulse detonation engine forum
Topic: PREDATOR - valveless PDE build blog
Replies: 35
Views: 16545

Re: PREDATOR - valveless PDE build blog

Any further updates?

Growlzler...,