I’ll give YOU some reliable sources mate: Aerodynamic laws.
Give US F-22, F-35 and Gripen’s respective leading edge sweep angle, considering BOTH US aircraft have a dragier Supercritical wing profile in Supersonic (by 0.011% actualy) and compare their TWR…
Guess which one will be as capable of supercruising than F-22? 😀
Simple enough NO?
I didn’t say the F 35 can supercruise. It was obligatory that said the NG will supercruise longer that F 22.
BTW, I think you consider only the advantages of swept delta winga and completelly ignore the disadvantages of unsuited inlets and most of all, the drag of external weapons.
Ehh!
If marketing director Magnus Olsson said “Today’s Gripen can supercruise but only on a cold day in Sweden,” – How could he have “forget” to mention “but only on a cold day” -as he said it ? 😀
By all means, gimme a statement from an official L.M guy state anything bout supercruise on F-35 😉
LM didn’t say this.
No, it was a statement that with ~20 percent more thrust and 300 extra kg, it WILL supercruise M1.1
And its a good bet that with the experience gained from God-knows-how-many-thousands-of-hour-flying-Gripen ,its well documented what power is needed to keep Gripen at any specific speed.
Missed the main point–contradictory declarations/statements=marketing BS.
And no, i’m not going to specify how many minutes Gripen NG can supercruise, but from all the specs i’ve seen so far, it will supercruise considerably longer then F-22 Raptor can ever hope to accomplish.
:p Officially, the F 22 has combat radius of 400 Nmiles with 100 nmiles supercuise at 1.6 M. So, adding the time on combat area, this would give a 250 Nmiles supercruise at 1.6M + 300 Nmiles subsonic cruise. Feel free to insert the figures for NG.
I’m tellin ya wrightwing is by far closer to the issue when he pose the question what setting is needed by F-22 to keep it even with Gripen in speed in supercruise, it’ll likely even out, but then again F-22 no longer has any speed advantage.
OK, let’s adopt your logic: if you consider 1.1M being supercruise, I bet that the f 22 could “supercruise” at 1.1M longer that NG. However, why on earth would anyone want to supercruise at 1.1 ? Isn’t here the worst drag region? In this time, the F 35 would cruise smoothly at 0.9 M. Do you think that the difference between 1.1M and 0.9 M at those heights, would bring any sgnificant advantage?
Here is an official statement concerning supercruise, as promised.
I should also add that all i’ve read on transonic says transonic is ~ Mach 0.95 ~Mach 1.05
:p Here is another official one:
Saab also said today that it expects the Gripen NG to be capable of supercruise – sustained supersonic flight without afterburning – with an air-to-air missile load on board. Today’s Gripen can supercruise “but only on a cold day in Sweden,” says test pilot and marketing director Magnus Olsson.
So, let’s see, in some paper SAAB said that the nowadays C/D could supercruise with AAMs, but they “forget” to mention the cold :p. Now they “expect” the NG to supercruise at 1.1 M with AAMs. :p:D
Do you guys remeber the Iraqi Information Minister in 2003? I think that he was more reliable than SAAB…:p
In the end, the NG might supercruise, but don’t tell me that it will do it for 48 the minutes on internal fuel…
F-22 ~29 minutes
EF Typhoon ~35 minutes
Gripen NG ~41 minutes
🙂
I see that you persist.
Again: you can’t take the total time an engine can run on mil thrust as the time that engine will supercruise!
By this twisted logic, a Su 30 with 11 ton of fuel will supercruise for an hour, while an F 15 E with 15.5 tons will do it for 1.5 hours. Everybody knows that ‘s not true.
The NG had yet to go >1M, but some people are convinced that it will supercruise 2xRaptor!
Even if it will supercruise, I wonder for how long with 3.175 tons of fuel! Or they plan to supercruise with those new, fat 1700 liter EFTs…
a/c.
Nevertheless: stress on that tail is humiliating, and evidence in itself that it is far and away too draggy.
Yeah, sure…so a plane that surpass in almost every sortie the time spent > 1M by an F 15 in its entire life, and they cap it at 1.8M for safety? Humiliating? Comme on! How many times did an Grippen go 1.8M????
Has pointed severall times, the basic numbers are mach 1.2/1.3 with 8 AAM´s for 250 NM with a 30 minute reserve. Those numbers are in every Eurofighter GMBH presentation to every single one Air Force for (at least) the last two and a half to three years. Most of those presentations are classified, but the 2006 Norwegian was de-classified, it´s public, and you can confirm those numbers in page 53 (or around that, i dont have the document right now).
Thanks, it’s the first time I see something specific about EF supercruising.
But, can you elaborate:
-250 Nmiles is the total time on SC (which would give ~ 100 Nmiles combat radius in SC alone + 50 Nmiles on intercepting area), or the combat radius?
-I don’t know what 30 min reserve means for EF users: that amount of fuel should be preserved except emergencies, or it is the time the EF cruises , at <1M for the rest of the sortie?
I’m really intersted.
To make it clear here: None of these aircraft were truely designed for Supercruise to the exeption of F-22.
They weren’t requiered to supercruise.
It is requierements which makes design and results on performance when the design is sound.
What makes Supercruise possible with these design are the characteristics of the Delta wing in supersonic.
What limits their Mach in supercruise are the limitations of their engines with pressure recovery and inlet design.
As for “Hypermaneuvrability” it is very much the same topic. = DESIGN.
Before exploring Rafale’s flight envelop to its limits the design was CG-tested…
http://www.onera.fr/images-science/simulation-numerique/avion-militaire-simulation-trajectoire.phpSig, you once posted this one too…
And I this one, funny some people still can’t believe Gripen and Rafale CAN supercruise…
How about this?
Capacite de supercroisiere. = Supercruise capability.
Jane’s World’s Aircrafts (I think 2004-2005 or so).Another one which have supercruise potential although unconfirmed (logical).
LordAssap, many conventional A/C do supercruise, no only EF and Rafale. For exemple, F 16 blk. 50, F 15 E,I, with P&W 229, F15K with GE 129 (without CFTs) and even the F 18C (with the 402 engine) could all do ~1.2M but only clean. This is why I asked for details (configuration, time).
Look to the SAAB material you posted: in the part in English, they say that the plane can supercruise with 4 AMRAAM, 2 Sidewidwers and 1 tank; in the part in Swedish they say that the plane can go M 1.2 with Sidewinders! Well, if the plane can go 1.2 only with wingtip missiles and 1.05M with the 6AAM and 1 tank, that’ not far from what an F 16 blk. 50 can…
As for the J 10, there is no mention of supercruise in the attached material. I presume that such a capability, if present, would have been mentioned.
No, it indicate how long time the engine will run on max dry thrust on internal fuel before the internal fuel tank is empty, and as you saw, F-22 can fly max dry thrust 80% of the time that EF Typhoon can.
And a paltry 58% of the time the Gripen NG can fly on max dry thrust.:eek:
Let’s suppose for a minute that the figures for the 3 engines are accurate:
-in your opinion, if 2 (or 3) engines are able to run the same time in max dry thrust on internal fuel, this means that they are similar in performances? :p
-for sake of demonstration, let’s assume that the above is true; in this case, in your opinion, this means that this engine will automantically provide any plane the capability to supercruise? I.e. regardless of shape of that plane, drag, or the fact that the plane carry weapons externally or EFT? Since the F 414 is on SuperHornet, based on your ideas, this one should supercruise too? :p
As for the debate on supercruise to be or not to be, i’ll live it to others to provide links for now…
at least i provided one 🙂
That’s a fanboy site to say the least. I meant a specific statement, such of those made by LM/USAF: the F 22 can supercruise at 1.6-1,7 with full weapon load.
Nothing strange at work here: all three engines are modern jets that burn about the same amount of fuel/pound of thrust
F22 Internal Fuel ~18448 lbs
(2 x F119)
55000 lbs Mil thrust @ 0.7 lb/lb.hr~0.48~29 min
(55000×0.7=38500->18448/38500=0.48->0.48×60=29 min)EF Typhoon internal fuel ~10990 lbs
(2 x EJ200 engine)
~27,000 lbs Mil thrust @ 0.7 lb/lb.hr~0.58~35 minGRIPEN NG Internal fuel ~7100 lbs
(1xF414)
~15000 lbs Mil thrust @ 0,7 lb/lb.hr~0.68~41 minAs for EF supercruise, I did not see anything clear about it: Mach, distance, altitude, configuration
SFC doesn’t indicate supercruise capabilty! As for the link you posted, do you realize that it’s not the offical site of EF consortium.
Originally Posted by sferrin
Which part of “clean Block 50 F-16” do you not understand? Besides, when has an F-16 ever went into combat with just two wingtip AAMs and internal fuel?I’d say most wartime encounters with Israeli F-16s happened just like that. 😉 So, the answer is, quite a lot.
I bet that those F 16s that raided Osirak or the Tunis PLO headquarters had only 2 Sidewinders…:p OTOH, over Bekaa Valley (100 km away from the bases) probably had only Sidewinders (but more than 2). So, it depends.
Both EF Typhoon and Gripen can maintain “SUPERSONIC SPEEDS” i.e. Super Cruise!
EF Typhoon is on pair with F-22 in terms of time, Gripen NG has a considerable longer supercruise endurance then F-22. (with a weapons load I mite add)
😮 Grippen NG will supercruise longer than F 22??? The thing barely flew! Let me guess: you are from Sweden…
As for EF supercruise, I did not see anything clear about it: Mach, distance, altitude, configuration.
LM claims the F-35 will be as manoeuvrable as the F-16/18, neither of these aircraft can fly any PST maoeuvers close to that of the F-22 with its TVC. If the F-35 is able to do that (and I doubt it) it would mean the F-35 exceeds the manoeuvrability of the F-16/18 by a fair margin.
The combat-ready F 35 (2.7 t of weapons and 8t of fuel)was compared with clean F 16/18 in terms of sustained turn rate.
Why is F-22 exempted from being useless above M1.2 but no others ?
Because an F 22 can routinelly fly at 1.7M, for 300 Nmiles. Others can’t
BTW for your info F-22 wing IS a crancked DELTA generating VORTEX lift like EVERY dselta wing, I thing Signatory had a good point there… = DRAG.
Enuff said.
For your info:
“The fundamental reason for going to a diamond wing was that it provided the lightest configuration and gave us the best structural efficiency and all the control power we needed for maneuvering,” Mullin explains. “The biggest consideration was its light weight. Weight drove the decision.”
“A diamond wing has more square feet of surface area, but is more structurally efficient,” adds Renshaw. “The longer root chord provides a more distributed load path through the fuselage. Multiple bulkheads carry the bending loads. The design provides more opportunity to space the bulkheads around the internal equipment. It also provides more fuel volume.”
“The structural engineers wanted a diamond wing because it provides a larger root chord, which carries bending moments better,” Hardy notes. “The aerodynamicists wanted a trapezoidal wing because it provides more aspect ratio, which is good for aerodynamics. Dick Heppe, the president of Lockheed California Company, made the final decision, and he was right. The aerodynamics were not all that different, but the structure and weights were significantly better. So we went to a diamond shape. The big root chord, though, moved the tails back. Eventually we even had to notch the wing for the front of the tails. If the tails moved farther back, they would fall off the airplane http://www.codeonemagazine.com/archives/1998/articles/oct_98/oct2a_98.html
…:p
I gots little to do with SIZE since the pylons and margin for safe separation are generaly the same, structural (FCS) limit with A2G loads for a Rafale are M 0.90 and typical cruise speed at 98% throttle setting will be M 0.83 with 3 X 2.000 l, 2 X Scalps and 4 X MICAs..
It got a lot to do with size: the same staff if hanged out of a B1, for example, will bring an insesisable penalty, vs a clean B1. But the EF/Rafale are not so much bigger than the F 16, so the penalty will be less, butnevetheless visible.
As for the configuration of rafale in the picture, if those had to carry 8 tons of fuel and 6 missiles, as the F 35 will carry internally, I can bet the Rafale won’t supercruise and won’t go faster than 1.6 M, so it won’t offer nothing much over the F 35 . I said comparable configuration, remember?
Of course, a clean, or even slightly charged Rafale (1 x 1250 EFT) will supercruise.