Record set at ROC Lucerne 2/8/97

Record set at ROC Lucerne 2/8/97

Post by J.P. Sha » Wed, 12 Feb 1997 04:00:00




Quote:
> By my count, we launched 3 rods and one set of
> igniter leads. It this a record?

It was a great launch -- for most of us.

One of the more amusing flights was our Fat Boy
on an E15-4W SU.  The rocket seemed to chug OFF the
launch rod (am I making this up? did anyone else see
the same thing) then took off straight up.  The nose
cone and body tube separated on ejection (burned shock
cord).  But he is fixable and will fly again.

Then, to top things off, the motor in my Barracuda blew out
when the ignitor lit.  I was using an Hirel Ignitor from
BSR/Delta V.  These are generally very reliable.  But, this
time, it was too much (powerful?) and the casing of my
AT G80-10T SU fractured and blew off the lower side of
my "Strato-Cuda".  The fuel/delay and ejection charge was
unburned.  I suspect either a flawed motor casing or too
much ignitor material.  This rocket will have to be
overhauled big time.

Our string of bad luck, ended when both P.J. (my son) and I
successfully launched our Initiators and Mustangs for
excellent flights (lost sight of the Mustang -- way cool!)

Quote:

> Considering this is the beginning of February, I was astounded at the
> number and variety of flights. For most of the day there was an hour wait
> for pads, and they were kept full.

With the additional annual and daily flight dues, maybe we'll get
some more pads.  It was too bad that several pads had recurring
problems.

Quote:

> In the afternoon it clouded up and actually rained on us as we were packing

Would have loved to stay.  Only got one flight out of each rocket.
Was planning on two apiece, but around 1:00 p.m. the evil "W" arrived
and we left for L.A.

How about that PML Wahoo on the 98mm K?  What a flight!!!

J.P. Shaw
Pismo Beach, CA

 
 
 

Record set at ROC Lucerne 2/8/97

Post by Bart Hackemac » Wed, 12 Feb 1997 04:00:00


Quote:


> > By my count, we launched 3 rods and one set of
> > igniter leads. It this a record?

> It was a great launch -- for most of us.

> One of the more amusing flights was our Fat Boy
> on an E15-4W SU.  The rocket seemed to chug OFF the
> launch rod (am I making this up? did anyone else see
> the same thing) then took off straight up.  The nose
> cone and body tube separated on ejection (burned shock
> cord).  But he is fixable and will fly again.

> Then, to top things off, the motor in my Barracuda blew out
> when the ignitor lit.  I was using an Hirel Ignitor from
> BSR/Delta V.  These are generally very reliable.  But, this
> time, it was too much (powerful?) and the casing of my
> AT G80-10T SU fractured and blew off the lower side of
> my "Strato-Cuda".  The fuel/delay and ejection charge was
> unburned.  I suspect either a flawed motor casing or too
> much ignitor material.  This rocket will have to be
> overhauled big time.

> Our string of bad luck, ended when both P.J. (my son) and I
> successfully launched our Initiators and Mustangs for
> excellent flights (lost sight of the Mustang -- way cool!)

> > Considering this is the beginning of February, I was astounded at the
> > number and variety of flights. For most of the day there was an hour wait
> > for pads, and they were kept full.

> With the additional annual and daily flight dues, maybe we'll get
> some more pads.  It was too bad that several pads had recurring
> problems.

> > In the afternoon it clouded up and actually rained on us as we were packing

> Would have loved to stay.  Only got one flight out of each rocket.
> Was planning on two apiece, but around 1:00 p.m. the evil "W" arrived
> and we left for L.A.

> How about that PML Wahoo on the 98mm K?  What a flight!!!

> J.P. Shaw
> Pismo Beach, CA

Yea, saw that one...  It kinda bounced up and down the
launch rod several times and then cut loose.  When it cut loose
the Fat Boy really cooked!  Very! strange.

It was a strange launch to say the least with the record 3
launch rods launched.

Not to mention some of the really awsome flights Saturday,
the Rocket Man Wahoo on a K (K180, I think) was really too
cool...

Too bad to hear the big W chased you out.  It did calm down quite
a bit from around 1:30 to around 3:00ish.  Got a couple of upscaled
Mosquito launches on a F40 and a G33 as well as a couple launches
of my kids rockets.

(I was the guy with the double Crayon bank rocket flown on an
H180.)

Here's to a windless March launch...

Hope to see you there...

 
 
 

Record set at ROC Lucerne 2/8/97

Post by Jerry Irvi » Wed, 12 Feb 1997 04:00:00


Quote:

> when the ignitor lit.  I was using an Hirel Ignitor from
> BSR/Delta V.  These are generally very reliable.  But, this
> time, it was too much (powerful?) and the casing of my
> AT G80-10T SU fractured and blew off the lower side of
> my "Strato-Cuda".  The fuel/delay and ejection charge was
> unburned.  I suspect either a flawed motor casing or too
> much ignitor material.

I don't.  I suspect the motor was engineered to run too close to the
operating/failure pressure of the casing so even a small event like an
igniter leaving the nozzle was sufficient to spike the pressure and blow
the motor.  Sad what 1/64" of throat will do to you for no good reason.

Jerry

--

Box 1242, Claremont, CA 91711 USA
Opinion, the whole thing.

 
 
 

Record set at ROC Lucerne 2/8/97

Post by Steve Gir » Tue, 25 Feb 1997 04:00:00



  But he is fixable and will fly again.

Quote:

>Then, to top things off, the motor in my Barracuda blew out
>when the ignitor lit.  I was using an Hirel Ignitor from
>BSR/Delta V.  These are generally very reliable.  But, this
>time, it was too much (powerful?) and the casing of my
>AT G80-10T SU fractured and blew off the lower side of
>my "Strato-Cuda".  The fuel/delay and ejection charge was
>unburned.  I suspect either a flawed motor casing or too
>much ignitor material.  This rocket will have to be
>overhauled big time.

It certainly happened quickly. I have this event on video tape and
even when watching it frame by frame, the sequence takes no more
than a few frames.

Sorry to see that destruction of your rocket on the pad. I would have
much rather watched it fly and then do a core sample.

Steve Giron