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robban

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November 14, 2009 at 3:19 pm in reply to: F-10 vs Gripen NG #2439005

robban
Participant

It’s hard to judge if the jet at the airshow is making a sustained turn or not. Most of the time you get a high ITR before the turn rate is stabilized. This effectively cuts the turn time down be several seconds. The Gripen turn in the above links appears to be sustained. That is to say no violent ITR at the beginning of the turn.

In this vid http://www.youtube.com/watch?v=7M-ByZ0pBjQ the MiG-29 enters the turn(2:59) at high speed, and exits the turn(3:13) at a much lower speed. In other words, the turn executed by the MiG-29 in this vid is not a sustained turn. The Su-27 does a much better job at maintaining its speed during the turn later in the film(5:07 – 5:22).

This is my highly unscientific opinion watching the vid. But I think the speed loss for MiG-29 is rather obvious.

November 14, 2009 at 1:52 pm in reply to: F-10 vs Gripen NG #2439080

robban
Participant

errr…..no….

Thats not the complete video….. At what point did JAS-39 Gripen start the turn?

I think this is the full video. Contains both the Hungarian & Swedish demos. – http://www.youtube.com/watch?v=fKglcbDUhGE

It starts to turn at around 8:14+ and levels off at around 8:35-36…..

Around 20 seconds. Like many others.

But I accept what Cola1973 said. These are just air-shows. What happens in real training/combat is a different story.

I didn’t time it from bank to roll out. It makes a complete 360 circle in 16 seconds though, in your link as well. He starts to turn(not bank) at 8:17, and has made a 360 at 8:33. If you time it from when it begins the turn till it stops the turn the plane has made more than 400 degree turn. It’s a nice sustained turn as well.

But, yes it’s an airshow. Put some missiles on it and add some altitude and well get a completely different tun time. But that goes for every other aircraft aswell, so.

November 14, 2009 at 10:23 am in reply to: F-10 vs Gripen NG #2439133

robban
Participant

I think u need this video to prove better. Short take off and steep climb immediately.. I am waiting for what type of combat plane can match that performaces..

http://www.youtube.com/watch?v=0VwTbc8IEBU

(Remember both plane is in empty loaded mode so come don’t in and bit*h abt J-10 is empty load so can easily do that.. F-16 and Mirage 2000 with empty load can never do that.)

*Edit* Added Gripen take off video

http://www.youtube.com/watch?v=lcpJUt9v_8A

U be the judge who is better 🙂

Not a realistic comparison IMO. The TWR for the Gripen and the J-10 are relatively comparable, so their acceleration on take off should be similar, perhaps with a slight advantage for the J-10. The Gripens lower wingloading OTOH might give it a lower lift off speed.

Anyways, the J-10 take off roll before rotation(in the video) is 3-4 seconds longer than that for the Gripen, which suggests that the J-10 pilot decided to rotate at a much higher speed than normal. The 3-4 seconds longer roll should give at least another 100km/h before the pilot rotates, which give more lift for a more spectacular take off. There’s no doubt in my mind, that should the pilot choose to, I’m sure a Gripen, as well as an F-16 or a Mirage 2000 could do the same.

Just my view on it.

November 13, 2009 at 2:15 pm in reply to: F-10 vs Gripen NG #2439497

robban
Participant

Gripen 360 in 16 seconds. http://www.youtube.com/watch?v=ACDGkNa77Rs

Starts at 3:32 ends at 3:48.

October 18, 2009 at 8:26 am in reply to: Best/Worst looking military jet. #2412678

robban
Participant

🙂

October 17, 2009 at 9:54 pm in reply to: list of combat aircraft flight cost per hour #2412836

robban
Participant

That is the bill for fuel alone nearly. 😉

So, the price for jet fuel is ~2$ per liter? Jet-A-1 is about 50 cents per liter. What makes jet fuel for military jets four times more expensive?

October 17, 2009 at 9:19 pm in reply to: list of combat aircraft flight cost per hour #2412910

robban
Participant

IIRC, in Swedish service the Gripen costs 2000$ per hour operate. The Gripen has a MTBF of 7.6 hours and requires 10 MMH/FH.

October 17, 2009 at 11:20 am in reply to: Best/Worst looking military jet. #2413156

robban
Participant

Well, I don’t think it is possible to convince another person that an aircraft is beautiful or not.

In my opinion most aircrafts are beautiful, and it is not possible for me to pick one that I find more beautiful than the others.

Here are some(jets) that I find beautiful. In no particular order.

EE Lightning
F-104
F-105
F-111
Hawker Hunter
Draken
F-14
F-15
F-16(it looks good, but it’s probably the most boring airplane in existense. I guess there are just too many of them)
MiG-25
MiG-29A
Su-27(no canards, please)
Mirage 2000
Rafale
Super Etendard
Mirage F1
Viggen
Gripen
Lansen
Eurofighter
Tornado ADV
F-4 Phantom
F-5E/F
Su-15
Tu-160
Tu-22

Ok looking.

J-10
LCA Tejas
JF-17

Not so pretty.

IAI Lavi
F-22

Downright ugly!

X-32
F-35 JSF
MiG-1.44

Some pics of pretty aircrafts!:)

Copyright Gripen International: Katsuhiko Tokunaga

October 6, 2009 at 7:05 pm in reply to: Various shots 2005 #2434076

robban
Participant

Beautiful pics! Thanks for sharing!:)

October 1, 2009 at 7:07 am in reply to: 36 Dassault Rafale for Brasil – Official #2436128

robban
Participant

GBU-10s are dumb bombs unless you have a targeting pod. Otherwise its just another fanboy photoshop.

It is a fanboy photoshop.

Although, I wont mind if the Rafale gets the order. It’s a splendid machine!:)

September 30, 2009 at 10:48 pm in reply to: 36 Dassault Rafale for Brasil – Official #2436248

robban
Participant

😎

September 30, 2009 at 11:04 am in reply to: 36 Dassault Rafale for Brasil – Official #2436459

robban
Participant

Just for fun.:)

June 16, 2009 at 6:10 pm in reply to: Saab Project 2107. #2443535

robban
Participant

According to Saabs research the 2107’s dorsal intake would receive a good flow of air even at very high AoA. The configuration was still a high risk, and there would not have been possible to make a twin seater version.

June 16, 2009 at 2:40 pm in reply to: Saab Project 2107. #2443593

robban
Participant

I sent my drawing to a friend of mine, and he did a quick colour job on it.

Looks nice.:)

June 13, 2009 at 11:25 pm in reply to: Saab Project 2107. #2444094

robban
Participant

Nice drawing.

I wonder if they also considered a dorsal intaked tail-less design. Perhaps the rivalry at the design teams kept such a idea from happening…

Thanks Sig!

Hmm, I’ve never heard of it though. I wonder what it would look like? Perhaps like a J-10 with a dorsal intake?:)

Here are some other Saab projects!
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