Author Topic: F-5 Freedom Fighter, Tiger, F-20 Tigershark, X-29 concepts and proposals ...  (Read 121875 times)

Offline tsrjoe

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Northrop proposal for a navaised F-5A ...

cheers, Joe
« Last Edit: March 19, 2013, 07:03:22 AM by ChernayaAkula »

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High wing proposal:



All hail the God of Frustration!!!

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Offline Logan Hartke

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Not too hard to see how someone can get to a Hornet from here.

Cheers,

Logan

Offline Weaver

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High-winger built (sort of)!



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All hail the God of Frustration!!!

You can't outrun Death forever.
But you can make the Bastard work for it.

Offline ChernayaAkula

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Why did they propose the high wing? Any particular benefits over the low wing?
Cheers,
Moritz

"The appropriate response to reality is to go insane!"

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Why did they propose the high wing? Any particular benefits over the low wing?

All that BillRo (over on Secret Projects) has said was:

Quote
In 1978 Northrop Advanced Design was at work developing the single F-404 engined F-5 which became the Tigershark. Lee Begin was working in the F-18L project but was scandalized that Northrop would consider a single engined fighter.  He had us F-18L guys do this design for a SuperTiger with a shoulder wing (more pylons and stores capability) and a cobra LEX and inlet.  We did not succeed in selling the idea except for the improved rearward visibility which appeared on Tigershark.

BillRo
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Offline ChernayaAkula

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Ah, so probably for the large LEX.
Cheers,
Moritz

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Offline Weaver

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According to ASP-Fighters, another reason for looking at the high-wing F-5 was to remove the requirement for the wing to be thick enough to accomodate the u/c legs. Now as has been pointed out, standard F-5 wings do hold the u/c legs and are pretty thin anyway, but if you wanted to make the legs thicker and/or longer, say for rough-field capability, then it would become an issue.

You could say that, in essence, a high-wing F-5 is approaching the condition of a Jaguar, which is exactly what my FA-5K was intended to be.
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What if the Japanese decided to base the T-2/F-1 on the F-5 rather then the Jaguar:


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Another variation:

All hail the God of Frustration!!!

You can't outrun Death forever.
But you can make the Bastard work for it.

Offline elmayerle

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At least one naval T-38/F-5 variant was the N-285B (I do wish I'd copied that brochure when I had the chance to read it in a co-worker's cubicle).

Now, as part of the early history of the Lavi, IAI approached Northrop about a joint-venture (this was early one when they contemplated using a F404 for power; weight growth led to the PW1120).  Northrop came back with some Tigershark/Lavi hybrids.  The first version used much of the F-20's structure; see below.

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Hmmm...a Recce RF-20 would turn some heads.
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Offline TerryCampion

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I did a 1/48th Monogram F-20 a few years ago in Thai Aggressor colours....

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 :)
All hail the God of Frustration!!!

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Offline Rickshaw

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High-winger built (sort of)!






Out of a matter of interest, how did you do the undercarriage, Weaver?   One of the things that has always worried me about the high wing model that Northrop showed was how the undercarriage folded up.  From my understanding of the internal structure of the standard F-5, there isn't much room in that fuselage for anything.

Offline jcf

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The work required to move the wing box structure from the bottom to the top of the fuselage would be so extensive,
that it would be a new fuselage design. So re-arranging the internals to allow for landing gear bays wouldn't be a
big deal.
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Offline Maverick

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Inspired by Panther's recent F-5s (see here: http://beyondthesprues.com/Forum/index.php?topic=378.225), I thought I'd post some of the dozen or so F-5s I've done over the years:




Regards,

John

Offline ysi_maniac

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Love these Oz F-5s

Offline Weaver

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Out of a matter of interest, how did you do the undercarriage, Weaver?   One of the things that has always worried me about the high wing model that Northrop showed was how the undercarriage folded up.  From my understanding of the internal structure of the standard F-5, there isn't much room in that fuselage for anything.


Sorry Rickshaw: only just seen this question (don't get a lot of time on-line these days).

Like this, basically:



The idea was that it retracts backwards into bays who's doors close after it's extended. This was only the first model I build after getting back into it a few years ago, so I didn't have a stash to raid for a more credible undercarriage or better bays, and the fact that it was a 1-week build meant that I didn't have time to scratchbuild it either.


"I have described nothing but what I saw myself, or learned from others" - Thucydides

"I've jazzed mine up a bit" - Spike Milligan

"I'm a general specialist," - Harry Purvis in Tales from the White Hart by Arthur C. Clarke

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Offline kitnut617

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A few years ago this F-5 (seventh Canadair built one) below was in my brother's workshop yard for almost a year.  I had a hand in redesigning how it was attached to the mounting poles as the system the RCAF were using was battering the aircraft to bits from the inside-out.

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Any photos of it in the workshop?
All hail the God of Frustration!!!

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But you can make the Bastard work for it.

Offline kitnut617

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We've got some but it will take a few days I think to find where the pics were archived.

These below though I took when I was coming up with an idea on how to make a much better fixture.  The bolt hole I'm measuring is one of four where the wing gets bolted to four corresponding lugs sticking out the bottom of the fuselage.

Incidently, how the aircraft comes apart is almost how Airfix has the way the kit gets assembled, I found that very interesting.
« Last Edit: August 18, 2012, 04:08:34 AM by kitnut617 »

Offline elmayerle

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I had an idea for a "Fast FAC" variant of the F-5/F-20 series; it could be done with either a single- or twin-seat aircraft.  Take the short recce nose that's available for all models and replace the camera gear and windows with the guts of a SNIPER pod or similar electro-optical pod.  I'm sorely tempted to try that with an F-5E kit.

Offline Geoff

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I like that idea!!