Flight Log - 2015-09-20 - Will Ferry's dd2.xls
Flight Date: 2015-09-20
Rocket Name: dd2.xls
Kit Name: Binder Design - Excel 54mm with Dual Deploy kit {Kit}
Flyer's Name: Will Ferry
Motors: I280-P
Expected Altitude: 2,101.00 Feet
Launch Site: XPRS 2015
Actual Altitude: 2,445.00 Feet

First flight of dd2.xls.  Successful flight, though descent had issues.  Drogue chute undersized (12” provided by Binder), rocket did not descend in an orderly fashion.  Upper shock cord tangled but did not appear to interfere with chute deployment.  Main deployed but one of the shroud lines was not connected to quick link (and no knot at end of lines), so the chute was not fully effective.  Rocket landed without damage.

Flew with Eggfinder @ 909MHz.  Flew with StratoLogger CF and EasyMini.  All data downloaded.

Flew with Mobius ActionCam.

Ejection charges were oversized, video clearly shows violent explosion and lower airframe snapping against end of shock cord (~0.43s after ejection).  Wells were filled with Wildman e-match inserted (1-per).  Need to do ground testing with reduced charge size to determine more reasonable amount.

StageMotor(s)
1I280DM-14A

 

comment Post a Comment