Re: [altusmetrum] Flight forensics?

2016-05-23 Thread w9ya
Sorry, that should read: "...by the switches or was the air flow non-laminar ?" ___ altusmetrum mailing list altusmetrum@lists.gag.com http://lists.gag.com/mailman/listinfo/altusmetrum

Re: [altusmetrum] Flight forensics?

2016-05-23 Thread w9ya
That should read: "...by the switches or was the air flow non-laminar ?" On Mon, May 23, 2016 at 11:30 PM, w9ya wrote: > Hi Chris; > > Hmmm. well the logical question is did the two holes on either > side if the camera shroud ever function correctly ? i.e. Were they >

Re: [altusmetrum] Flight forensics?

2016-05-23 Thread w9ya
Hi Chris; Hmmm. well the logical question is did the two holes on either side if the camera shroud ever function correctly ? i.e. Were they occluded in any way by the switches or was the air pressure non-laminar ? If so, then you really only had two holes total; one of which could have been

Re: [altusmetrum] Flight forensics?

2016-05-23 Thread Chris Attebery
I had nylon rivets between the sections. They need ~80lbs to shear. It shouldn't have drag separated. From: altusmetrum [mailto:altusmetrum-boun...@lists.gag.com] On Behalf Of Geoff Hendrick Sent: Monday, May 23, 2016 4:50 PM To: Altus Metrum Subject: Re: [altusmetrum] Flight

Re: [altusmetrum] Flight forensics?

2016-05-23 Thread Geoff Hendrick
your plight reminds me of my first test flight on my L3 build... early drogue deployment just after burnout mine was caused by drag separation of sustainer and payload sections Geoff On 23 May 2016 at 20:22, Müller, Thomas wrote: > This is just speculation, but

Re: [altusmetrum] Flight forensics?

2016-05-23 Thread w9ya
Um. I like to have THREE pressure portsi.e. just in case. Here's how (and why): It seems that this flight qualified as a "just in case" scenario. I generally make each hole .67-1.0 the size of the specified size of the single hole specification, all of them the same actual size, and space

Re: [altusmetrum] Flight forensics?

2016-05-23 Thread Müller , Thomas
This is just speculation, but if the altimeter bay was not properly sealed to the rear parachute bay, it could be that at burnout the parachute in the rear compartment continued moving upward relative to the rear part of the rocket creating a pressure increase trough a piston effect. (similar

Re: [altusmetrum] Flight forensics?

2016-05-23 Thread Keith Packard
Chris Attebery writes: > I've attached a rendering of the altimeter bay and camera shroud. In > hindsight I should have sealed the camera in a separate bay from the > altimeters. I would probably stretch the rocket a bit more to get some > separation between the