Newsgroups: sci.military
Path: utzoo!utgpu!watserv1!watmath!att!att!cbnews!cbnews!military
From: dvlssd@cs.umu.se (Stefan Skoglund)
Subject: Re: Tailhooks
Organization: Dep. of Info.Proc, Umea Univ., Sweden
Date: Tue, 20 Nov 90 02:07:35 GMT
Approved: military@att.att.com
Message-ID: <1990Nov20.020735.25988@cbnews.att.com>
References: <1990Nov16.053023.22480@cbnews.att.com> <1990Nov19.001449.8583@cbnews.att.com>
Sender: military@cbnews.att.com (William B. Thacker)
Lines: 70



From: dvlssd@cs.umu.se (Stefan Skoglund)
About the Swedish Air Force and theirs Viggens.

In the jetpipe of the Viggen you will find 3 triangulary
sheets of steel folded in the wall at the inside.
At touchdown the sheets goes into the jetstream
and turns it forward thru 3 openings.
The engine is a RM8 built on a license by Volvo Flygmotor
in Trollhaettan.
The RM8 is a license built JT8D.
The EBK is Swedish-developed.

The result is this :
It takes about one minut from start to 10000 m.
The EBK has 3 zones.

The takeoff length is about 600 m
You can cut it a little if you want.
The landing langth is about 400 m.

This is necessary to make the Swedish basing tactic work.
We have a frosen lake up in Northern Sweden.
A kolon with some snow-plough, fuelcar, some cars with technicians,
ammunition and so on.
They start to put up a landing strip and some service spots
on the ice.
The engine is a little picky about FOD.
Immediately then the srip is clear. One kilometer is more than enough.
2 JA-37 ( Airplane-System nr 37 version Jakt (Fighters) with
a limited attack-cap ) lands.
They get refueled, reloaded and takes off.
Total time about 20 minutes from wheels down to take off.

Upon war and under exercises everyone and everything will deploy
at war-bases. Some are the same as peace-bases, some are civilian
and some are only for war.
The war base is big.
In the middle you have one main runway and connected with it
bye taxing-lanes a number of service places.
The newest bases has all this and two or three a little
unusual wide and straight swedish roads to land at.
A plane is inbound to the base.
She gets a service place allocated.
A squad with 3 enlisted men, 1 cinc, 1 tech and some fuel
is being sent out.
At touch-down the pilot will find a flight-controller ass
on a motorcycle waiting. He will then take him to just his
service-place.
The whole purpose is this : if the enemy want to hit our air-bases
he want get anything for his work.

The JAS 39 Gripen is fitted with a RM12.
It is a F404 equiped with a Swedish EBK.

No Thrust reverser due to the heavy use of plastics and carbon fiber.
You wont find much metal in it.
Under the well known crash the structure cleared it with not so
big damage. A bit of the wing, fin got broken.

One of the Viggen prototype got in a crash too.
The reversing system didn't shut symmetricaly
so she went out in the grass because of non-symmetrical
braking forces.
Thanks for me.
replies to dvlssd@cs.umu.se



