Russian aircraft design

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16 years 8 months

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I found this posting on F-16.Net
http://www.f-16.net/f-16_forum_viewtopic-t-6130.html

>> Raptor_claw <<
>> It just drives me nuts when people compare wing loading numbers for an F-22 and F-15. Why? In short, because of the lift distribution for unstable vs stable airframes. Conventional (stable) airframes require downforce from the horizontal stabs to maintain trim. Relaxed-stability (unstable) airplanes do not (at least not in the portions of their envelopes where they are likely to approach Clmax). In other words, the F-15 wing has to not only support the weight of the structure, it has to generate additional lift to balance the downforce from the tail. An F-22 gets the opposite effect - the wing can actually generate less lift than weight because the tail is helping, creating positive lift. (This, by the way, is a significant portion of the drag savings, as all lift (up or down) generates drag.) <<

The F-22 maneuvers like previous aircraft. It will be the benchmark in performance for many years to come, as was the F-15 Eagle.

True the F-22 has no canards but, canards are not a cureall. It greatly depends on the overall design and what the designers are trying to accomplish. The F-35 had canards until the design was taken to the NASA wind tunnel at Aims Research Center, Mt. View, Cal. After 160 hours of wind tunnel testing, it was decided the design was better off without the canards. It was not just stealth that lead to that decision.
The F-22 is designed to excel and fight in an area of the performance envelope no other aircraft. It can come down and mix it up if it 'has to' but why should it..... it can fight and maneuver effectively where no other aircraft can -high speed and high altitude.
In the conclusion of the Austrailian Air Force's evaluation for the next aircraft to replace the F-111 they made the following statement about the Typhoon in comparison to the F-22;
Austrailian Air Force Evaluation of New Fighters
http://www.ausairpower.net/typhoon.html
"What conclusions can we draw about the Typhoon? The notion that the aircraft is "almost as good as an F-22" is not supportable, indeed upgrading the F-15 with engines and a radar/IRS&T/AAM package of the same generation as that of the Typhoon would equalise almost all advantages held by the Typhoon over older F-15C/E variants. By the same token, no upgrades performed on the F/A-18A/C would equalise the performance advantages of the Typhoon over these aircraft."

Adrian

OH NO
Sweet Jesus, Mary and the lambs...
If the guy´s in the RAAF knew that someone is crediting Carlo Koop as one of theirs, there wil be some sort of mass desertion :D
The ausairpower his a pression group leaded by the notorious CK, the guy who, not so long ago, proposed that the RAAF F-111 should be upgraded with an AESA Radar and a pair of PW F-119 engines... Plain, barking mad.
And other thing, the paper´s in that site are so full of holes that you could pass the Titanic right through it.
Start by the empty weight, the associate thrusth/weight ratio and the fuel fraction of the Raptor...

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17 years 8 months

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Holy thread rebirth!! Please don't open such old threads.

Member for

16 years 8 months

Posts: 3,765

Holy thread rebirth!! Please don't open such old threads.

:eek:

What? This thread was right on the top of the list.:confused:

Member for

19 years 4 months

Posts: 1,620

:eek:

What? This thread was right on the top of the list.:confused:

Maybe it's because you're in Australia and you're therefor standing upside down.......

Member for

16 years 8 months

Posts: 3,765

Maybe it's because you're in Australia and you're therefor standing upside down.......

:D

West Europe

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24 years 3 months

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The real thing that hampered Russia's military design bureaus was Stalin's lack of enthusiasm for computer systems. That set them back in so many areas. Gotta credit them for closing the gap and even taking the lead in some areas though.

Stalin died in 1953!