Flight Log - 2015-03-07 - Will Ferry's dd.xls
Flight Date: 2015-03-07
Rocket Name: dd.xls
Kit Name: Binder Design - Excel 54mm with Dual Deploy kit {Kit}
Flyer's Name: Will Ferry
Motors: I297-10
Expected Altitude: 1,747.00 Feet
Launch Site: LUNAR - Snow Ranch
Actual Altitude: 2,056.00 Feet

Successful launch and recovery.  Landed about 600 feet from pad.  Rocket flew primed-only, still needs final paint job.

Flew with StratoLogger CF as "primary" altimeter and EasyMini as "backup".  Both altimeters used only for logging, rocket was rigged for single-deploy motor ejection (main in lower parachute bay, drogue in upper parachute bay with no charge).

Flew with AltimeterThree, data recorded.

Flew with AltimeterTwo, data recorded.

Flew with Eggfinder @ 909MHz, GPS track recorded.  Had visual on rocket entire flight so GPS-based recovery was not necessary.

Flew with Mobius ActionCam, video recorded.

Motor delay ejection came about 1.5 seconds later than expected (3 seconds later than OpenRocket "optimum delay), no damage (rocket roughly at apogee when deployment occurred).

OpenRocket simulation altitude less than measured altitude by 17.6%.  Top Speed and G-force predictions close to measured values.  Time to apogee, flight duration and descent times quite different.  Similar observations on first flight of this rocket despite accurate weight and Cg in OpenRocket, need to do further analysis to understand why simulations for this rocket are off.

StageMotor(s)
1I297SK-10

 

Related Videos

comment Post a Comment