Adept Altimeter: Any Problems?

Adept Altimeter: Any Problems?

Post by Harry Edwar » Sat, 21 Dec 1996 04:00:00



I am ready for the maiden launch of my new PML Sudden Rush, using
the Adept Alts2 altimeter for two stage recovery system deployment.

I used the "juice bottle" test to check the electronics, and everything
seemed to work fine--meaning that both flash bulbs seemed to fire at the
points as a pulled air from the bottle and slowly released it, etc.

I have secure mounting rails for the altimeter, and the wiring / switch harness
has also been checked.

I would appreciate any tips, or suggestions based on personal experience
 to help insure a successful flight and recovery.

Thanks in advance!

:Harry Edwards

 
 
 

Adept Altimeter: Any Problems?

Post by Henr » Sat, 21 Dec 1996 04:00:00


Quote:

> I am ready for the maiden launch of my new PML Sudden Rush, using
> the Adept Alts2 altimeter for two stage recovery system deployment.

> I used the "juice bottle" test to check the electronics, and everything
> seemed to work fine--meaning that both flash bulbs seemed to fire at the
> points as a pulled air from the bottle and slowly released it, etc.

> I have secure mounting rails for the altimeter, and the wiring / switch harness
> has also been checked.

> I would appreciate any tips, or suggestions based on personal experience
>  to help insure a successful flight and recovery.

> Thanks in advance!

> :Harry Edwards

----

Harry, the only thing you really should worry about is battery life.  It
would be
a good idea to install a switch somewhere on the rocket so you can turn
on the alt
at the launch pad.  Some RSO's are now requiring this.  Also, if you
power up the
alt, its a bad idea to turn it off, then on again sometime later.  Some
alts have
fired the ejection charges because of this.  The adept unit charges a
capacitor
for the ejection charges.  Turning the unit off, then on again may cause
it to
fire.  You can install a switch by using the adept cable 2x accessory
cable.
Another no, no, is having a rocket reach Mach during flight.  Funny
things happen
at that speed, and you could have an early ejection.

Henry.

Ps.  For something like the sudden rush, you only need about 1/2 a gram
of black
powder to eject the chutes (half of an Aerotech red cap, the small one
that is
used for the ejection well cover for 24 and 29mm rms systems).

 
 
 

Adept Altimeter: Any Problems?

Post by T-Bisho » Sun, 22 Dec 1996 04:00:00


I have four suggestions:

one: Wrap tape around the battery. Make a complete wrap all the way around
the         p.c. board.

two: Orient the assembly so the battery spring is up. If you point it the
other way,         the sudden acceleration will cause the battery to
temporarily lose contact.

three. Secure the harness plug in some fashion so it will not come loose.
They are           pretty strong, but why take a chance.

four: Always use a fresh battery for every single flight. Check the battery
with a volt                 meter before you put it in the altimeter. I
know you can probably get two or         more flights out of a battery, but
batteries cost a lot less than a rocket.

T. Bishop

T.R.A. # 4433      N.A.R. # 62290-SR

 
 
 

Adept Altimeter: Any Problems?

Post by Jack Go » Sun, 22 Dec 1996 04:00:00


Quote:

>I am ready for the maiden launch of my new PML Sudden Rush, using
>the Adept Alts2 altimeter for two stage recovery system deployment.

<snip>

Quote:
>I would appreciate any tips, or suggestions based on personal experience
> to help insure a successful flight and recovery.
>:Harry Edwards

Make sure the altimeter is placed with the spring-loaded end of the
battery holder UP.

Ensure the altimeter can't slide up or down in the airframe.

Seal the holes in the bulkheads where the ejection charge wires pass
through with something (hot glue, etc..).

Double-check first event goes to the little chute and the second event
goes to the big chute.  (Been there, done that, long walk)

The first event should be a small chute or streamer.  Falling fast is
a good thing!

Enjoy the short walk.

Jack

 
 
 

Adept Altimeter: Any Problems?

Post by barz » Mon, 23 Dec 1996 04:00:00


Quote:

> I have four suggestions:
> four: Always use a fresh battery for every single flight. Check the battery
> with a volt                 meter before you put it in the altimeter. I
> know you can probably get two or         more flights out of a battery, but
> batteries cost a lot less than a rocket.

I agree with all of your above suggestions, but don't you think this is a
bit steep?? Just 2 flights out of the battery?? I think you will be safe
for ALOT more than that! I use the same battery in my remote for my truck
starter and it lasts all year. (not the "same" battery but same type)
However if you look at from the insurance view you do have a point, but I
think it is not the best of tradeoffs.

WB

Quote:

> T. Bishop

> T.R.A. # 4433      N.A.R. # 62290-SR

 
 
 

Adept Altimeter: Any Problems?

Post by T-Bisho » Mon, 23 Dec 1996 04:00:00


For me a dollar for a battery is just part of the cost of launching my
rocket. After I have paid 50 dollars for the motor and another dollar for
the ignitor, another dollar for the battery just doesn't seem to matter. I
did the same thing back when I used to use a Pratt radio. I would just use
the batteries once and then recycle them into another consumer appliance.
There are just too many things that can go wrong in a rocket project. I
eliminate every failure point I can.

But anyway, that's just me. Good luck....

T. Bishop

T.R.A. # 4433      N.A.R. # 62290-SR



Quote:
> I agree with all of your above suggestions, but don't you think this is a
> bit steep?? Just 2 flights out of the battery?? I think you will be safe
> for ALOT more than that! I use the same battery in my remote for my truck
> starter and it lasts all year. (not the "same" battery but same type)
> However if you look at from the insurance view you do have a point, but I
> think it is not the best of tradeoffs.

> WB

 
 
 

Adept Altimeter: Any Problems?

Post by John H. Cato, Jr » Mon, 23 Dec 1996 04:00:00


Quote:

> > I have four suggestions:
> > four: Always use a fresh battery for every single flight.

barz responded:

Quote:
> I agree with all of your above suggestions, but don't you think this is a
> bit steep??

If we're talking one of the classic '9 volts', what is this?  $1.00?
And, with one of those Radio Shack 'Battery Club' cards - getting a free
battery per month for a year - then you could be talking *zero* cost
(this is some of what I've done).  I know that some of the Adept stuff
uses (for example) those 12 volt (lighter?) batteries - but I still
contend even with a couple of dollars for a single flight use (and I've
seen these 12 volt batteries for, I believe, UNDER $1.00 in quantities
of 10 from Digi-Key).  The typical cost of an electric match for
ignition of a typical HP rocket motor will cost you more than that.

If one is talking a $25 rocket, it may be up in the air about this
policy - but for anything more, it's just not worth it (heck, those 9
volts can be 'recycled' for smoke alarms and such).

I know of *several* rocketeers who, when their rocket was 'in trouble',
would pay $50 on the spot to save their rockets.  Problem is, there is
no way to  transmit that $50 worth of gold plated, Mil Spec, NASA
approved battery up to that rocket when it's 1000 feet up, coming in
fast, and TRYING to eject with a wimped out battery.  However, if there
were, they would do it.

Admittedly, it seems excessive on the surface - but one should look at
'power sources' as just as expendable as the propellant in the motor -
one shot and it is over.  I mean, even IF the rocket is valued at
nothing, why 'blow' $50 worth of propellant (alone) and have the flight
go bad.

My policy - one shot and it's over - recycle to some other use -
period.  No exceptions.  Not ever.

-- john.

 
 
 

Adept Altimeter: Any Problems?

Post by Mike Duma » Mon, 23 Dec 1996 04:00:00



SNIP
(and I've> seen these 12 volt batteries for, I believe, UNDER $1.00 in
quantities of 10 from Digi-Key).

Try Wally World (Walmart), their just under $1 ea.

SNIP

Quote:
> My policy - one shot and it's over - recycle to some other use -
> period.  No exceptions.  Not ever.

> -- john.

My Policy too.  I sometimes use 2 altimeters for deployment for
redundancy in a larger rocket and I always use a Fresh battery for each
flight, then throw them away.

I'm Much More Concerned with Safety than with saving a buck (or 2).

mike

 
 
 

Adept Altimeter: Any Problems?

Post by Bob Kapl » Tue, 24 Dec 1996 04:00:00


Quote:

> I am ready for the maiden launch of my new PML Sudden Rush, using
> the Adept Alts2 altimeter for two stage recovery system deployment.

Interesting, a Sudden Rush is amongst the projects I hope to complete this
winter. Thus I too am in the market for an Adept AltS2

But I've got a problem. No one seems to have them. Because of problems getting
product from Adept, distributors are dropping the line every place I call. The
latest was Red Arrow yesterday. So does anyone know where I can actually get
one of these?

P.S. If anyone is in need of a 98mm case, contact Red Arrow. They have one they
want to unload ASAP.

        Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"

 
 
 

Adept Altimeter: Any Problems?

Post by Harry Edwar » Tue, 24 Dec 1996 04:00:00


I have heard / read a lot of feedback regarding the lengthy delivery times for the
Adept products.  I can only relate that my personal experience was very satisfactory.

I could not find anyone who had the systems in standing inventory.

I ordered directly from Adept.  I "gently" pushed my order along by calling every week or so.  I received my ALTS2 about 3 weeks after I ordered.  This is consistent with
others I've spoken to.

Adept is essentially using a hand built / build to order process, so things aren't going to be off the shelf delivery.  

:Harry

 
 
 

Adept Altimeter: Any Problems?

Post by Henr » Tue, 24 Dec 1996 04:00:00


Quote:


> > I am ready for the maiden launch of my new PML Sudden Rush, using
> > the Adept Alts2 altimeter for two stage recovery system deployment.

> Interesting, a Sudden Rush is amongst the projects I hope to complete this
> winter. Thus I too am in the market for an Adept AltS2

> But I've got a problem. No one seems to have them. Because of problems getting
> product from Adept, distributors are dropping the line every place I call. The
> latest was Red Arrow yesterday. So does anyone know where I can actually get
> one of these?

> P.S. If anyone is in need of a 98mm case, contact Red Arrow. They have one they
> want to unload ASAP.

>         Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"

---

Call them direct;

Adept Rocketry
2545 Overlook Drive
Broomfield, CO. 80020
(303) 466-9605

Along with the alt, get about 10 cable 2x (x= length, 12/24/36 inchs),
so you
can switch the alt for better safety and battery life.

Henry.

 
 
 

Adept Altimeter: Any Problems?

Post by Mitchell S. Pine » Wed, 25 Dec 1996 04:00:00


Quote:


> > I am ready for the maiden launch of my new PML Sudden Rush, using
> > the Adept Alts2 altimeter for two stage recovery system deployment.

> Interesting, a Sudden Rush is amongst the projects I hope to complete this
> winter. Thus I too am in the market for an Adept AltS2

> But I've got a problem. No one seems to have them. Because of problems getting
> product from Adept, distributors are dropping the line every place I call. The
> latest was Red Arrow yesterday. So does anyone know where I can actually get
> one of these?

> P.S. If anyone is in need of a 98mm case, contact Red Arrow. They have one they
> want to unload ASAP.

>         Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"

Adept altimeters can be ordered directly from Adept Rocketry, telephone
303-466-9605 their shipping time is running about two weeks. You must be
a member of either NAR or Tripoli to purchase.
mitch pines
 
 
 

Adept Altimeter: Any Problems?

Post by Darrell D. Moble » Wed, 25 Dec 1996 04:00:00


Quote:

> I would appreciate any tips, or suggestions based on personal experience
>  to help insure a successful flight and recovery.

Be sure you mount it where the spring in the batter holder is up, or the
battery could compress the spring on acceleration and surge the
circuits, firing the flash bulbs.

Darrell
--
Visit the NEW "Rocketry Online" at
http://www.cris.com/~Ddmobley/links.html
for the latest rocketry-oriented website URL locations.

"You come here, we'll take you there..."

 
 
 

Adept Altimeter: Any Problems?

Post by Darrell D. Moble » Wed, 25 Dec 1996 04:00:00


Quote:

> I would appreciate any tips, or suggestions based on personal experience
>  to help insure a successful flight and recovery.

Be sure you mount it where the spring in the battery holder is up, or
the battery could compress the spring on acceleration and surge the
circuits, firing the flash bulbs.

Darrell
--
Visit the NEW "Rocketry Online" at
http://www.cris.com/~Ddmobley/links.html
for the latest rocketry-oriented website URL locations.

"You come here, we'll take you there..."

 
 
 

Adept Altimeter: Any Problems?

Post by Your Na » Sat, 28 Dec 1996 04:00:00


Bob,
        I just ordered an ALTS2 for my sudden rush direct from Adept.

        It arrived in 2 weeks. They also carry the flash bulbs from
        Robbies Rockets

        Kevin Heneghan


 >

Quote:
Edwards) writes:

 >> I am ready for the maiden launch of my new PML Sudden Rush, using
 >> the Adept Alts2 altimeter for two stage recovery system deployment.
 >
 >Interesting, a Sudden Rush is amongst the projects I hope to complete this
 >winter. Thus I too am in the market for an Adept AltS2
 >
 >But I've got a problem. No one seems to have them. Because of problems
getting
 >product from Adept, distributors are dropping the line every place I call.
The
 >latest was Red Arrow yesterday. So does anyone know where I can actually get
 >one of these?
 >
 >P.S. If anyone is in need of a 98mm case, contact Red Arrow. They have one
they
 >want to unload ASAP.
 >
 >        Bob Kaplow      NAR # 18L       TRA # "Abort, Retry, Fail?"