[tccrockets] Re: 3/4 Scale Nike-Nike Smoke

From: James Dougherty <jafrado@xxxxxxxxx>
To: TCC chat <tccrockets@xxxxxxxxxxxxx>
Date: Wed, 2 Nov 2016 23:12:45 -0700

I made some mods to the design tonight, also some plans on how to make it
lighter.
Sims to 30K now ... we will see if we can hold the (now classified) flight
weight :-)

Rod, when we meeting up?

On Wed, Nov 2, 2016 at 8:35 AM, James Dougherty <jafrado@xxxxxxxxx> wrote:

Sure; lets discuss at next launch

Sent from my iPhone

On Nov 2, 2016, at 8:28 AM, Rob Gong <robgong@xxxxxxxxxxx> wrote:

Hey James,

I'm pretty new. Is there a part of this that I can help?

Also, where will this be built?

Or will different groups work in different cities on different parts to
bring this rocket into existence?

Just trying to understand how our club builds big things.

Thanks.

Rob Gong

------------------------------
*From:* tccrockets-bounce@xxxxxxxxxxxxx <tccrockets-bounce@xxxxxxxxxxxxx>
on behalf of James Dougherty <jafrado@xxxxxxxxx>
*Sent:* Wednesday, November 2, 2016 12:29 AM
*To:* TCC chat
*Subject:* [tccrockets] Re: 3/4 Scale Nike-Nike Smoke

Right on, thanks Ben!

So anyhow, lets do some work in the next few months, with all the help we
have now
we can get a LOT done in one day alone.

On Tue, Nov 1, 2016 at 9:18 PM, Ben Sandoval <dmarc-noreply@xxxxxxxxxxxxx>
wrote:

Count me in, hoping to help out when I can.

On Monday, October 31, 2016 11:11 PM, James Dougherty <jafrado@xxxxxxxxx>
wrote:

Yes, off by 10.

Easier back of the envelope way is to take the weight of the vehicle,
take the thrust-curve initial thrust
div by weight of vehicle.

For O4900, it peaks at ~1256 lbf, if vehicle weighs about 300 lbs, so
about 4gs... right on the edge.
So we know we should be under 250lbs loaded.

Its also why you should always look at initial thrust and not average, by
averag thrust (4900/4.45)
we would be under 5:1 power-weight ratio!

Initial thrust is everything :-)

On Mon, Oct 31, 2016 at 3:01 PM, Peter Hackett <peter.hackett@cal.berkeley.
edu <peter.hackett@xxxxxxxxxxxxxxxx>> wrote:

Oops!

Instead of typing 181 ft/sec/sec, I typed 1811 (key repeat I guess)

So 5.626 gees

0 - 60 in .48 secs

http://www.convert-me.com/en/c onvert/acceleration/foot_sec2. html
<http://www.convert-me.com/en/convert/acceleration/foot_sec2.html>

Peter "Turn on brain, then talk; not talk then turn on brain" Hackett

On Mon, Oct 31, 2016 at 2:54 PM, Chris Attebery <
chrisattebery1971@xxxxxxxxx> wrote:

Peter, I think you're off by a power of 10.

On Mon, Oct 31, 2016 at 2:45 PM, Peter Hackett <peter.hackett@xxxxxxxxxxxxxxx
u <peter.hackett@xxxxxxxxxxxxxxxx>> wrote:

Dude! 181 ft/sec/sec is 55 Gees!

For some perspective, if you could do that in your car, you could do 0 60
mph in .05 seconds.

Peter "I guess I'm going to have to take two weeks off so I can going to
ARLISS/XPRS and Balls (or darn)" Hackett

On Sat, Oct 29, 2016 at 6:22 PM, James Dougherty <jafrado@xxxxxxxxx>
wrote:

[image: Inline image 1]

O4900 to O4900 is the way to go.
Also, was way off on Weight, if we build it strong and light it should be
about 400lbs loaded.

On Sat, Oct 29, 2016 at 5:29 PM, Richard King <drrbk@xxxxxxxxxxx> wrote:

Oh, its on!
I’m in.

RK

*From:* Gary
*Sent:* Saturday, October 29, 2016 1:59 PM
*To:* Chat, TCC
*Subject:* [tccrockets] Re: 3/4 Scale Nike-Nike Smoke

WOW! Let me know if I can help in some way. 8-)

GW

------------------------------
*From: *"James Dougherty" <jafrado@xxxxxxxxx>
*To: *tccrockets@xxxxxxxxxxxxx
*Sent: *Saturday, October 29, 2016 1:52:20 PM
*Subject: *[tccrockets] 3/4 Scale Nike-Nike Smoke

Rod and I met this morning and we started the TCC 3/4 scale Nike-Nike
smoke for BALLS next year. It will be two PR 3/4 Scale Nikes stacked 18'
tall and 11.5" diameter and. CTI Pro150 O5100 staging to a CTI O4900 (full
P complex vehicle).

Jack G started and I started this project 6 years ago as a comeback to
the full scale. Scott Yow and I now have all the parts and we are doing
this as a BALLS group project for TCC!

Special thanks to Jack G and Scott Yow for making this happen!

Rod will have more details later....

-James

Sent from my iPhone

------------------------------
[image: Avast logo] <https://www.avast.com/antivirus>
This email has been checked for viruses by Avast antivirus software.
www.avast.com <https://www.avast.com/antivirus>

References:
- [tccrockets] Re: 3/4 Scale Nike-Nike Smoke
  - From: James Dougherty
- [tccrockets] Re: 3/4 Scale Nike-Nike Smoke
  - From: Ben Sandoval
- [tccrockets] Re: 3/4 Scale Nike-Nike Smoke
  - From: James Dougherty
- [tccrockets] Re: 3/4 Scale Nike-Nike Smoke
  - From: Rob Gong
- [tccrockets] Re: 3/4 Scale Nike-Nike Smoke
  - From: James Dougherty

[tccrockets] Re: 3/4 Scale Nike-Nike Smoke

Other related posts: