Hal8472
Well-Known Member
- Joined
- Nov 23, 2012
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Hi
I was launching a rocket on the weekend and cant explain the failure. It was a perfectflight altimeter launched dual deployment in a mid sized rocket. G motor. Altimeter was in the nose cone with plenty of ventilation. Charge cap was used for the drouge. Cable cutter was used for the main. No problems setting up, had continuity, three chirps. It took four tries to get the motor to light so it was on the pad longer than usual, but I turned it off when there was a long wait. At launch it made a nice lawn dart. None of the charges fired. Stratologger was pretty beat up so I am not sure how much testing will reveal.
My possible options are
1. Not enough ventilation. Dont think so. Nose cone unscrews at the top so there was lots of room for air flow.
2. Not enough battery power. While there was probably some drop in current over time the battery should last an hour on the pad without problem. I was using a alkaline 9v.
3. Hooked up wiring wrong. Well, I did inspect carefully and had continuity at launch
4. Old altimeter. I have had it for about four years and moved several times. I thought I was taking care of it but perhaps not.
Any thoughts?
Andrew
Sent from my iPad using Rocketry Forum
I was launching a rocket on the weekend and cant explain the failure. It was a perfectflight altimeter launched dual deployment in a mid sized rocket. G motor. Altimeter was in the nose cone with plenty of ventilation. Charge cap was used for the drouge. Cable cutter was used for the main. No problems setting up, had continuity, three chirps. It took four tries to get the motor to light so it was on the pad longer than usual, but I turned it off when there was a long wait. At launch it made a nice lawn dart. None of the charges fired. Stratologger was pretty beat up so I am not sure how much testing will reveal.
My possible options are
1. Not enough ventilation. Dont think so. Nose cone unscrews at the top so there was lots of room for air flow.
2. Not enough battery power. While there was probably some drop in current over time the battery should last an hour on the pad without problem. I was using a alkaline 9v.
3. Hooked up wiring wrong. Well, I did inspect carefully and had continuity at launch
4. Old altimeter. I have had it for about four years and moved several times. I thought I was taking care of it but perhaps not.
Any thoughts?
Andrew
Sent from my iPad using Rocketry Forum