This was a TRI Level 2 cert flight that went wrong from the beginning. The motor I wanted to use was a CTI K515 Skidmark but the Vender didn’t have one. But I was handed a “Cool Motor” a CTI K590 and after doing a little research I was uneasy with the power off the pad and was hesitant on using it.  Once to the field and trying to decide what to use I was convinced that it would be fine and would be a great flight.  So the motor was loaded and the HyperLOC 835 was destine for one final Flight!

It was fast off the pad with a little odd wiggle but then flew straight for another 1500’ before coming apart. The review of the pieces was odd to me, the forward payload tube had folded over the altimeter bay breaking apart releasing the chute and zippering the rest of the tube pulling form the nosecone and ripping the lines from the chute. The odd part was that the motor mount was attached to the centering rings but the Rings pulled away from the airframe as if it had expanded the airframe from the rings. Someone said that the air trapped in between the centering rings and the sudden increase in altitude created more pressure in between the rings and blew the sides out. They said I needed holes drilled up into the centering rings so the pressure could be equalize to the outside air.  I need to do little research on this and will up-date.

The bottom Line is when in doubt go with your gut feelings and on cert flights just play it safe and wait to push the limits of the rocket till you’re done with it.

I passed the written test and missed 2. went back and looked at the 2 missed and don't know why they were missed, I guess I went to fast! Of course the Flight was a big no pass!

Raven 3\August 30 2014 hyperloc 835.FIPa

Average PreLaunch Altitude (ft)               = Val: -34.00    

Average PreLaunch Axial (Gs)                  = Val: 1.02      

Average PreLaunch Axial Offset                = Val: 1.02      

Axial Accel (Gs)                              = Min: -66.95     Max: 85.32      

Baro (Atm)                                    = Min: 0.8926     Max: 1.0012     

Current Draw (A)                              = Min: 0.00       Max: 0.00       

Flight Count                                  = Val: 68.00     

Lateral Accel (Gs)                            = Min: -35.22     Max: 36.71      

Motor Ignition Time (sec)                     = Val: 0.172     

Temperature (F)                               = Min: 111.05     Max: 111.35     

Time (sec)                                    = Min: 0.000      Max: 23.780     

Velocity (Accel-Ft/Sec)                       = Min: -1         Max: 1380       

Volts Battery (V)                             = Min: 8.04       Max: 8.10       

Volts Pyro 3rd (V)                            = Min: 8.02       Max: 8.04       

Volts Pyro 4th (V)                            = Min: 8.02       Max: 8.08       

Volts Pyro Apogee (V)                         = Min: -0.02      Max: 8.08       

Volts Pyro Main (V)                           = Min: 8.02       Max: 8.04       

[Altitude (Accel-Ft)]                         = Min: 0          Max: 15653      

[Altitude (Baro-Ft-AGL)]                      = Min: 2          Max: 3145       

[Altitude (Baro-Ft-ASL)]                      = Min: -32        Max: 3111       

[Velocity (Accel-Ft/Sec)]                     = Min: -69        Max: 1373       

[Velocity (Accel-MPH)]                        = Min: -47        Max: 936