HPR Kitbash, LOC EZI-65 + LOC IV

HPR Kitbash, LOC EZI-65 + LOC IV

Post by Yves Lacom » Wed, 11 Sep 1996 04:00:00



Howdy.

I want to make a nifty little combo for my first certification flight,
and was toying with the idea of combining the parts of a LOC EZI-65
and LOC IV to make an AMRAAM-like rocket.  Basically, I would use
the LOC EZI-65 main body tube and fins for the lower section, the
tube coupler that came with it, the body tube of the LOC IV to form
the second half of the rocket, and the LOC IV fins to form the
"Canard" of the rocket, with the standard LOC nose cone to top
it all off.  The kitbashed rocket is about 7 feet tall, and looks
fairly impressive.

My big question is: is this assemblage stable?  And which engine
should I use for a first flight (I hope an H is enough for a first
time) :).

--
Yves

 
 
 

HPR Kitbash, LOC EZI-65 + LOC IV

Post by PaulDimi » Fri, 13 Sep 1996 04:00:00


A group of rmr folks are working together to buy a single product from a
single vendor during one month in order to prove that rmr folks can work
together and that they can have a positive sales impact on vendors.
Sounds like a great idea worth trying.  Take a look back at the earlier
posts.   A product has been picked for September and I believe the
discussion is going on regarding October.

See the other thread "September Production Frenzy Fad" for info from Rob
Edmonds.

Paul.

Fly Baby Fly!

 
 
 

HPR Kitbash, LOC EZI-65 + LOC IV

Post by Doug Gilmo » Sat, 14 Sep 1996 04:00:00


It sounds like this combo could be unstable unless you cut down the upper
fins so that the combined area is less than half that of the lower fins.

-

 
 
 

HPR Kitbash, LOC EZI-65 + LOC IV

Post by Mr. James J. Clea » Sun, 15 Sep 1996 04:00:00


With the weight you are talking about I would not try to fly the rocket
on an "H" motor even if it is stable, go for an "I".
                      Jim C.
                      TRA # 3996
                      LIARS
                      METRA

 
 
 

HPR Kitbash, LOC EZI-65 + LOC IV

Post by Yves Lacom » Mon, 16 Sep 1996 04:00:00



Quote:
>With the weight you are talking about I would not try to fly the rocket
>on an "H" motor even if it is stable, go for an "I".

I figured as much.  I'll also cut down the original LOC IV fins to
roughly half the surface area of the EZI fins that serve as the base
fins of this rocket.  Should look alot like an AMRAAM with the
difference being square fins on the "booster" instead of the
triangular ones the AMRAAM has.  I prefer this look anyhow ;)

Thanks.

--
Yves

 
 
 

HPR Kitbash, LOC EZI-65 + LOC IV

Post by Lee Re » Thu, 19 Sep 1996 04:00:00



[info on EZI-65 and LOC-IV deleted]

: My big question is: is this assemblage stable?  And which engine
: should I use for a first flight (I hope an H is enough for a first
: time) :).

I'd suggest getting a copy of a CP calculation program off sunsite.
I use cp_calc, and I've heard positive comments on VCP, too.

That combo on a H will not go very high, but I've flown a 4" by
6 foot tall PML-tubed and fiberglassed rocket on an H123, just to
use up some of my smaller 38mm reloads.  It is a heavy rocket, and
it was "OK".  Flies really nicely on Is, though, and I will
probably use H123 supply on smaller rockets.  Good luck!

Lee

--
Lee Reep