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Old Dec 06, 2004, 03:03 AM
Park Jet Guru
jetset44's Avatar
Seattle, WA
Joined Jun 2002
5,616 Posts
T-38 Talon Park Jet

Here are BETA plans for the latest member of the Park Jet series, the Northrup T-38 Talon. This design is very similar in concept to the F-18 and F-15 Park Jets, and uses the same construction methods and recommended power setups. Like the other jets, itís intended to be a true park flyer built with simple construction methods and using inexpensive and readily available components. Here are the specs:

Wing area: 218 sq in
Span: 28.2 in
Length: 45.4 in
Weight RTF: 15 Ė 18 oz
Wing loading: 10.9 oz/ft2
Motor: GWS EPS-350 with C gearing (or brushless equivalent)
Battery: 1200 Ė 1500 mAh 11.1V Lithium-polymer
Prop: 8x6 (EPS-350) or 9x6 (brushless)
Flight controls: Wing flaperons, full-flying horizontal stabilizer

The general wing planform and tail moments of this design are fairly similar to the F-18 Park Jet, so Iíd expect the T-38 to fly similarly. However, because the real T-38 has such a small wing area this design also has a smaller wing area than the F-18 Park Jet (218 vs 254 sq in), making the wing loading a little bit higher. Thus, the T-38 will be a little hotter than the F-18, but if the weight is kept low it should still qualify as a park flyer.

The reason Iím posting beta plans is because these plans have been done for nearly a month and I havenít had time to build it yet, and with the holidays approaching I wonít have the time to build it for at least another month. And since many fellow Ezoners have expressed strong interest in building this jet, I decided to go ahead and post the beta plans now and let you guys help work out the kinks!

Please note that because these are beta plans they may have errors and that the CGs and control throws shown are untested. Thus, if you build this please take note of any errors or misalignments in the plans, and most importantly what CG and control deflections your finished model flies best with, and let me know. After I collect a list of improvements, Iíll update the plans (if I don't build my own copy sooner!). Both tiled and non-tiled files are posted below, as are previews of the plans.

Enjoy, and post pictures as you build this!

Steve

EDIT #1: (Aug 6, 2005) I finally had a chance to build this bird, so I've attached some photos below.

EDIT #2: (Aug 21, 2005). I updated the T-38 plans to fix several errors and include several design improvements, and also developed a new illustrated construction guide for this model. These are available in post #872 of this thread (link below):

http://www.rcgroups.com/forums/showp...&postcount=872
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Last edited by jetset44; Aug 21, 2005 at 03:54 AM.
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Old Dec 06, 2004, 03:21 AM
PROFESSOR TRUTH JIMMY ICE
Akura2's Avatar
United States, CA, Los Angeles
Joined Sep 2003
6,732 Posts
That's AWESOME!... now you can get to work on this....
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Last edited by Akura2; Dec 06, 2004 at 03:47 AM.
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Old Dec 06, 2004, 03:24 AM
PROFESSOR TRUTH JIMMY ICE
Akura2's Avatar
United States, CA, Los Angeles
Joined Sep 2003
6,732 Posts
or this....
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Last edited by Akura2; Dec 06, 2004 at 03:37 AM.
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Old Dec 06, 2004, 04:02 AM
Zoom-Zoom
RoverTomcat's Avatar
Switzerland, ZH, Dietikon
Joined Jun 2004
815 Posts
Whoa - Steve! That'll be my next jet...

Thanks for publishing the plans! Now where did I put my sanding mask?



Best regards - Paco
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Old Dec 06, 2004, 04:07 AM
PROFESSOR TRUTH JIMMY ICE
Akura2's Avatar
United States, CA, Los Angeles
Joined Sep 2003
6,732 Posts
BTW Steve... sorry to threadjack...lol


Great-looking plane!!!
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Old Dec 06, 2004, 04:10 AM
Go FASST or go home...
Ben_E's Avatar
Bergen, Norway
Joined Nov 2002
3,156 Posts
Thanks again Steve!!!!

Do you know how many you are driving crazy these days....

I just had a look at he plans -a and it's great work as usual
Thanks,

Ben_E
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Old Dec 06, 2004, 04:21 AM
what wing man??
hummingbird111's Avatar
Nashville Tennessee
Joined Jul 2003
1,742 Posts
T-38

Hey Steve,, that's a rocking plane,,... i've been looking around for something a little different than the F-16,, kinda similar too,,wow!! that's a cool plane,, i didn't know what a T-38 was till now ,,thanks !!
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Old Dec 06, 2004, 06:49 AM
Registered User
cyberbipe's Avatar
United States, AK, Fairbanks
Joined Sep 2003
130 Posts
Thanks Steve,
I have built the 2 previous jets and the fly awseome I will have to get bussy on this one next. This is such a great thing you do by giving us these plans.
Michael
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Old Dec 06, 2004, 06:50 AM
Registered User
Melbourne, Eastern Sub.
Joined Sep 2004
314 Posts
Thanks for the plans Steve !

The missus is not too keen on you for giving me the eagle and hornet to play with.... said I was spending too much time on my planes and not enough time with her !

Now she's seen these plans !! (still haven't let on to her about the gripen )

Guess I better get my priorities right.............. now where did I put my cuttin knife ?????
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Old Dec 06, 2004, 08:49 AM
Now in TN!
J Morgan's Avatar
Chapel Hill, TN USA
Joined Apr 2001
24,766 Posts
I must say Steve, you are a credit to the E-Zone and unselfish individual.
Thanks for all your contributions. Without saying, your plans are great!

J
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Old Dec 06, 2004, 09:34 AM
Registered User
Yorktown, VA
Joined Oct 2000
413 Posts
Steve,

What John said, multiplied by hundreds for the masses!

Joe
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Old Dec 06, 2004, 09:35 AM
Registered User
Yorktown, VA
Joined Oct 2000
413 Posts
Steve,

What John said, multiplied by hundreds for the masses!
Many thanks from all of us.

Joe
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Old Dec 06, 2004, 10:03 AM
Fidler & twidler
empeabee's Avatar
Cranfield U.K.
Joined Mar 2004
4,087 Posts
Hint

I just thaught I'd copy this from the F18 park thread

Steve's Beer Fund
Paypal account address: jetset44@verizon.net

Mike
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Old Dec 06, 2004, 10:04 AM
Registered User
RNAF's Avatar
The Netherlands
Joined Dec 2003
2,307 Posts
Is it in EDF version too?
Guys like jetset make this forum so popular!
Even though I "might not" make this one, I appreciate your effort and persistance

Hats off for Jetset44!

Dave
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Old Dec 06, 2004, 11:44 AM
Registered User
T_MECO's Avatar
Houston
Joined Jun 2004
210 Posts
Thanks Jet for the official release of this thread. I had a chance to get a head start on this project. This plane does handle similarly to the F-15. However, It requires speed! This is not going to float around like the F-18, 15 foam planes. I used a axi 2208/34 with 9x6 SF prop. Controlability became an issue at low speeds. This baby lives for speed. I have some c.g. and rebuilding issues to do prior to my next flight. Seeing how my first attemp went off with mixed results.
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