L1GHT Shadow

Discussions for scratch builders. For the enthusiast that builds from the ground up. Tell us what you've built and what projects you working on in the space race.

Moderator: Moderators

strud
Engineer
Engineer
Posts: 908
Joined: Thu Oct 02, 2008 7:37 am
Location: Central Tablelands, NSW

Re: L1GHT Shadow

Postby strud » Tue Sep 20, 2016 7:33 am

Fantastic build George.

I especially like the fact that you both come up with many unique approaches (including your tooling and processes) and come up with a very nice vehicle as well.

air.command
Astronaut
Astronaut
Posts: 1875
Joined: Mon May 14, 2007 11:18 am
Location: Sydney, Australia
Contact:

Re: L1GHT Shadow

Postby air.command » Tue Sep 20, 2016 7:21 pm

Thanks for the nice words guys, much appreciated.
Crop Circles: ... just a bunch of guys looking for their rockets ....

air.command
Astronaut
Astronaut
Posts: 1875
Joined: Mon May 14, 2007 11:18 am
Location: Sydney, Australia
Contact:

Re: L1GHT Shadow

Postby air.command » Sun Oct 23, 2016 2:05 pm

Since we weren't able to fly the rocket on the H motor at the last HPR launch, we at least flew it as a water rocket. We're not sure what the upper pressure limit is yet and so we dialed it back a little to 240psi to make sure it didn't blow up before we've had a chance to fly the certification flight.

Here is a video of the first flight



We also test flew the electronics a week before that to check that everything was good. Here is a video of those tests.



We'll have another go at the L1 certification at the next HPR launch.
Crop Circles: ... just a bunch of guys looking for their rockets ....

october sky
Human GPS
Human GPS
Posts: 4030
Joined: Tue May 01, 2007 2:47 pm
Location: BRISBANE

Re: L1GHT Shadow

Postby october sky » Sun Oct 23, 2016 3:58 pm

I feel always loss for words when I see your work George...the workmanship, ideas & the video's you produce. Just first class all the way. 8) :D
QRS Inc. NO: 003

Life Member

TRA #11616 L3

User avatar
CATO
Mr Smiley
Mr Smiley
Posts: 1797
Joined: Thu Dec 24, 2009 6:20 pm
Location: Sydney, NSW
Contact:

Re: L1GHT Shadow

Postby CATO » Sun Oct 23, 2016 7:14 pm

october sky wrote:I feel always loss for words when I see your work George...the workmanship, ideas & the video's you produce. Just first class all the way. 8) :D

Agreed....
"In thrust we trust"

AMRS L3
AMRS Technical Advisory Group - CO

Impulse:
2017: 00,000 Ns (00.00% A)
Ns 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: 1.14M

air.command
Astronaut
Astronaut
Posts: 1875
Joined: Mon May 14, 2007 11:18 am
Location: Sydney, Australia
Contact:

Re: L1GHT Shadow

Postby air.command » Thu Apr 20, 2017 7:08 am

At the recent Mullaley HPR launch we finally had a chance to fly this rocket on "proper" motors. :D The first flight was our L1 certification flight on a CTI H-120 and the second was a H-125. I really liked both of these motors. Here is a video of those two flights:



Here is the full flight report with pictures from the launch day:
http://www.aircommandrockets.com/day186.htm
Crop Circles: ... just a bunch of guys looking for their rockets ....

User avatar
CATO
Mr Smiley
Mr Smiley
Posts: 1797
Joined: Thu Dec 24, 2009 6:20 pm
Location: Sydney, NSW
Contact:

Re: L1GHT Shadow

Postby CATO » Thu Apr 20, 2017 7:10 am

Hi George,

Congratulations on the flight and achieving your L1 :D

David.
"In thrust we trust"

AMRS L3
AMRS Technical Advisory Group - CO

Impulse:
2017: 00,000 Ns (00.00% A)
Ns 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: 1.14M

air.command
Astronaut
Astronaut
Posts: 1875
Joined: Mon May 14, 2007 11:18 am
Location: Sydney, Australia
Contact:

Re: L1GHT Shadow

Postby air.command » Thu Apr 20, 2017 7:16 am

Thanks David. We just wanted to see what all the fuss was about on the Dark Side. :D
Crop Circles: ... just a bunch of guys looking for their rockets ....

User avatar
SpaceManMat
Astronaut
Astronaut
Posts: 1687
Joined: Mon Dec 15, 2008 9:56 pm
Location: Brisbane

Re: L1GHT Shadow

Postby SpaceManMat » Thu Apr 20, 2017 9:27 am

Nice one George. Congrats.

I look forward to seeing what water rocket you use for your L2 8)
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 10,849 feet
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

air.command
Astronaut
Astronaut
Posts: 1875
Joined: Mon May 14, 2007 11:18 am
Location: Sydney, Australia
Contact:

Re: L1GHT Shadow

Postby air.command » Thu Apr 20, 2017 8:20 pm

SpaceManMat wrote:Nice one George. Congrats. I look forward to seeing what water rocket you use for your L2 8)

Cheers SpaceManMat, that is the long term goal. :D While we could put a 38mm J in this rocket, I think we would need to upgrade the front end structurally. We will most likely build a new rocket with a 54mm mount. One problem is that as the motor mount gets bigger, it gets harder to hold in a water rocket nozzle under pressure. With a 54mm nozzle adaptor at 300psi it exerts about 500Kg of force on the retainer nut.
Crop Circles: ... just a bunch of guys looking for their rockets ....

User avatar
SpaceManMat
Astronaut
Astronaut
Posts: 1687
Joined: Mon Dec 15, 2008 9:56 pm
Location: Brisbane

Re: L1GHT Shadow

Postby SpaceManMat » Fri Apr 21, 2017 9:23 am

air.command wrote:
SpaceManMat wrote:Nice one George. Congrats. I look forward to seeing what water rocket you use for your L2 8)

Cheers SpaceManMat, that is the long term goal. :D While we could put a 38mm J in this rocket, I think we would need to upgrade the front end structurally. We will most likely build a new rocket with a 54mm mount. One problem is that as the motor mount gets bigger, it gets harder to hold in a water rocket nozzle under pressure. With a 54mm nozzle adaptor at 300psi it exerts about 500Kg of force on the retainer nut.


Yikes that could prove problematic.
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 10,849 feet
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

User avatar
OverTheTop
It's only money...
It's only money...
Posts: 2300
Joined: Sat Jul 21, 2007 2:20 pm
Location: Melbourne, Australia

Re: L1GHT Shadow

Postby OverTheTop » Sat Apr 22, 2017 12:58 am

Thanks for the interesting build, and congratulations on the L1 :)
TRA #13430
L3
"Everybody's simulation model is guilty until proven innocent" (Thomas H. Lawrence 1994)

martymonsta
Engineer
Engineer
Posts: 693
Joined: Mon Oct 13, 2014 11:57 am
Location: Drouin Vic.

Re: L1GHT Shadow

Postby martymonsta » Sat Apr 22, 2017 3:02 pm

Congratulations on achieving L1 George.
Many years ago the great British explorer George Mallory, who was to die on Mount Everest, was asked why did he want to climb it. He said, "Because it is there."
Well, space is there, and we're going to climb it

MARS #21
AMRS #41 L2/LCO/RSO/CO

drew
Southern fried goodness
Southern fried goodness
Posts: 648
Joined: Sat Aug 01, 2009 10:20 pm
Location: Perth

Re: L1GHT Shadow

Postby drew » Mon Apr 24, 2017 12:04 pm

As per usual you've done some amazing work on this build George. Well done.
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 23,908ft - K300 - Balls 22
Max V - 2,488 ft/s, ~Mach 2.2 - M2250 - THUNDA 2015

october sky
Human GPS
Human GPS
Posts: 4030
Joined: Tue May 01, 2007 2:47 pm
Location: BRISBANE

Re: L1GHT Shadow

Postby october sky » Wed Apr 26, 2017 8:05 pm

Congrat's George on your L1 and awesome video again.....I think secretly ....maybe.....you have wanted to come to the "dark side" for a while....... :lol: :)
QRS Inc. NO: 003

Life Member

TRA #11616 L3


Return to “Scratch Built”

Who is online

Users browsing this forum: Yahoo [Bot] and 1 guest