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Rdf Skyraider

Started by ysi_maniac, July 10, 2007, 05:58:09 AM

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ysi_maniac

July 10, 2007, 05:58:09 AM Last Edit: July 10, 2007, 06:28:03 AM by ysi_maniac
I think I will need your feedback in several points. Because I am not sure about every detail.

The origin of this modification will be explained in BackHistory, but it will end as a concept that, may be applied to future designs :ph34r:

EDIT: BackHistory will be related to Eagle Claw Operation http://www.whatifmodelers.com/forum//index...showtopic=16282
Will die without understanding this world.

ysi_maniac

#1
July 10, 2007, 05:59:13 AM Last Edit: July 10, 2007, 06:06:06 AM by ysi_maniac
... the holes are windows because she carries a 4-5 infantrymen squad. The brakes are converted into armored ports.

The belly port can be used to unload small wheeled assets like a motobike or so.
Will die without understanding this world.

ysi_maniac

#2
July 10, 2007, 05:59:54 AM Last Edit: July 10, 2007, 06:09:55 AM by ysi_maniac
... she willl be powered by a turboprop and the exhaust will be located in those white rectangles. The blades were cut to be enlarged and squared later.
Will die without understanding this world.

ysi_maniac

#3
July 10, 2007, 06:00:41 AM Last Edit: July 10, 2007, 06:11:50 AM by ysi_maniac
... that big spinner covers a strong hub that allows propeller pitch inversion.
Will die without understanding this world.

ysi_maniac

#4
July 10, 2007, 06:01:25 AM Last Edit: July 10, 2007, 06:12:51 AM by ysi_maniac
... not much work on wings yet.
Will die without understanding this world.

cthulhu77

#5
July 10, 2007, 06:20:36 AM
Some cutting and chopping!   Interesting take on the Sandy...curious about this one.

ysi_maniac

#6
July 10, 2007, 06:55:45 AM Last Edit: July 10, 2007, 07:39:26 AM by ysi_maniac
Some questions for our resident engineers:

In late 70s was there any turboprop that could, more or less, fit into the original radial cowling?

Should I enlarge trailing edge control surfaces?

Should I increase wingspan?

Intended STOL performance should allow this plane to land and takeoff from a football/soccer stadium. That is to say 110m long and 70m wide, approx. Then terraces: 45ยบ hurdle. Can this be possible? http://en.wikipedia.org/wiki/Operation_Credible_Sport

Forward looking rockets to stop the plane in landing? Should pitch inversion be enough?

RATO bottles for takeoff?

What about blowing air from compressor in any way over or under wings?

I would really appreciate your help.

Thanks,
Carlos.

EDIT:

from http://www.thinkingaustralia.com/thinking_..._Credible_Sport
Quote
to make a ground clearance of 90 feet at 600 feet from the starting point

But I think this is not enough
Will die without understanding this world.

Howard of Effingham

#7
July 10, 2007, 09:36:33 AM Last Edit: July 10, 2007, 09:38:05 AM by Howard of Effingham
this ysi looks very promising and very plausible.  ^_^

i guess you already know but several of the single seat pilot cockpit skyraiders
had a crewman or two in the back. the AEW skyraiders being one i think and an
early ECM version of the AD skyraiders used by the USN, ?-1Q or something like
that.

if you are going for say four SOF guys down the back, then at the very least you will have to
subtract the weight of all their kit and themselves from the total weapon load don't
forget.

trevor
Keeper of George the Cat.

ysi_maniac

#8
July 10, 2007, 10:18:22 AM Last Edit: July 10, 2007, 10:19:30 AM by ysi_maniac
^^^^
You are right. In this modif, it will carry just fuel tanks and, maybe 2 gunpods, rocket launchers,... never heavy loads that are incompatible with STOL performance. If standard A-1 can load 8000 lb (3600kg), I am thinking in max 1000kg.
Will die without understanding this world.

Brian da Basher

#9
July 10, 2007, 02:05:50 PM Last Edit: July 10, 2007, 02:07:58 PM by Brian da Basher
I think you're on to something here, Carlos! I really like the concept. I'd go with the RATO bottles to add the short take off performance you're after. I can't think of any more to add than to say I'll really be looking forward to seeing more!
:thumbsup:
Brian da Basher

elmayerle

#10
July 10, 2007, 11:11:47 PM
Hmm, I'm not sure of any suitable turboprops that'd fit as shown.  Anyone have dimensional data on the Dart and/or Tyne?  Most of the others I can think of with suitable power would take a longer, slimmer mount and cowling.  You might be able to find a twin-turboprop installation with a common gearbox that'd provide the required power and fit your length restrictions, but you'd still have a lot of empty and un-needed cowling space.

I'd probably enlarge the flaps and go with drooped ailerons when the flaps are deployed.  The alternative would be to redesign the wing with full-span flaps and use spoiler for roll control, though this does make low-speed handling more "interesting" (see the troubles pilots have had over the years if they don't stay current on the MU-2 which has that flap and control arrangement).
"Reality is the leading cause of stress amongst those in touch with it."
--Jane Wagner and Lily Tomlin

Archibald

#11
July 11, 2007, 12:23:51 AM Last Edit: July 11, 2007, 12:24:53 AM by Archibald
Sorry, couldn't resist... T-56!  :rolleyes:  
Seems that turboprop Spads are in Fashion these days...

Look very good so far...  :wub:  

Au fait, is there a river in Teheran ? Is it far from the ambassade ?  :rolleyes:  
King Arthur: Can we come up and have a look?
French Soldier: Of course not. You're English types.
King Arthur: What are you then?
French Soldier: I'm French. Why do you think I have this outrageous accent, you silly king?

Well regardless I would rather take my chance out there on the ocean, that to stay here and die on this poo-hole island spending the rest of my life talking to a gosh darn VOLLEYBALL.

Mossie

#12
July 11, 2007, 02:59:18 AM
I haven't got dimensions for the Dart or Tyne, but I have found them for the Lycoming T55 (powered the Piper Enforcer), Allison T56 & Napier Eland.  The Dart & Tyne will probably be slightly larger in diameter than the Eland, but not by much.  Like Evan mentioned, it's the diameter that's going to cause you problems, although the lengths of the turboprops are greater, they are lighter so you shouldn't have any problem with weight up front.

Wright R-3350:
Length: 78.14in (1,985mm)
Diameter: 55.62in (1,413mm)
Dry weight: 2,670 lb (1,212kg)

Napier Eland:
Length: 92in (2,337mm)
Diameter: 36in (914mm)
Dry Weight: 1,575 lbs (714kg)

Lycoming T55:
Length: 40.0in (1016mm)
Diameter: 24.2in (615mm)
Dry Weight: 670lb (303kg)

Allison T56:
Length: 146.1in (3,711mm)
Diameter: 27in (690mm)
Dry weight: 1,940lb (880kg)
I don't think it's nice, you laughin'. You see, my mule don't like people laughin'. He gets the crazy idea you're laughin' at him. Now if you apologize, like I know you're going to, I might convince him that you really didn't mean it.

ysi_maniac

#13
July 11, 2007, 04:56:43 AM
Got this link: http://www.geae.com/engines/military/t64/index.html
Thinking in a derivative of GE T64.
Will die without understanding this world.

ysi_maniac

#14
July 11, 2007, 08:09:57 AM
Why not, keeping its original radial ?  :unsure:  :wub:  
Will die without understanding this world.
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