F-22 going over Mach 3 ?

Question

What's the max speed of F-22 ?

can F-22 go over Mach 3 ?

assumption:

F-22 is at the SAME CURRENT WEIGHT

and skin, nose, leading edges

& major airframe are made of titanium alloy

because...

rumours said F-22 can go to Mach 2.2+ even

some said Mach 3+

Answer 1

It's pretty d**n fast, whichever way you look at it. I wouldn't like one chasing me!

Isn't the top speed classified? This may be of help, anyway:-

http://en.wikipedia.org/wiki/F22#Specifi...

Answer 2

no it cant go over mach 3

Answer 3

Due to the design of the inlets, 2.2Mach is probably pretty close.  Keep in mind that crews can go their entire careers without flying at max speed.  Also, pure speed isn't as important as agility.

Answer 4

-----Vicotor Ellis ----

Your answer is good, but their is one that I do disagree on is that the F-15 DOES have titanium. It is in the aft splice joint, from about a foot in front of the engines to the aft end of the engines. The Vertical's and stab's are composite.

f-22 going over mach 3? will never happen, not design for it. It is design for supercruse but the F-23 is still faster.

Answer 5

no

Answer 6

The stated top speed of the F-22 is greater than 1600 mph (Mach 2.42). However, independent calculations have placed its top speed closer to 1873 mph (Mach 2.84)

Answer 7

The truth is that no one in the public knows because the F-22's top speed hasn't been released, but some educated guesses can be made based on its inlet structure and what's known about its engines. First of all, the nose, wing leading edges, etc. aren't titanium and adding titanium in those areas to mitigate high heat would require serious design changes and would disable the radar in the nose. One of the biggest problems with supersonic flight is with shockwaves interfering with engine operation. A turbojet or turbofan engine cannot use supersonic air. This is overcome in most supersonic arcraft with some form of variable inlet. One examole of this is the inlet on an F-15. If you look closely, you'll notice that the inlet can angle downward. Just below supersonic speeds, such an inlet will adjust to force shockwaves away from the inlet and slow the icoming air down to subsonic speeds. The higher the mach, the more difficult this becomes. The F-22 does not have variable inlets, which means that engine management above mach 2 is bound to become impossible or at least much, much more difficult. Furthermore, the F-22's engines are optimized for supercruise and greater acceleration, not top speed. This means that the F-22 is not likely to be quite as fast as the F-15 (the F-15 was designed to be as fast as possible without titanium and steel construction) and definitely not a mach 3 aircraft. This is more than made up for by its ability to supercruise. The F-22 will cover more ground in less time, with a lot less fuel than an F-15 could. Even if the F-22 is as fast as an F15, it is definitely not a mach 3 aircraft. There are major reasons for this. First is engine design. The SR-71 cruised at more than mach 3. At such speeds, the variable inlets converted the jet to ramjet operation to gain the neccessary efficiency to operate at such speeds. This required a massive, complex, and heavy sytem. The F-22 has a surprisingly simple inlet and engine configuration that simply cannot deal with those speeds. The second major problem with mach 3+ flight is structural. The SR-71 did its mach 3 cruising at 80,000 ft. Even in such frighteningly thin air, the skin recieved enough friction to heat it to several hundered degrees. This required an all titanium skin, among other design traits like expanding panel joints and special hydraulic fluid. The F-22 is made of aluminum, composites, and a comparatively small amount of titanium. The titanium is also internal structure, not skin. The F-22's airframe simply could not withstand mach 3 flight without damage. It's possible that there are some undisclosed engineering tricks in the internal inlet channels and/or possibly some unknown design traits in the engines themselves allowing such high performance, but this is very unlikely. All available information indicates the F-22 should have a maximum speed of mach 2.2 or 2.3 at altitude and around mach 1.3 at sea level. The truth is, it doesn't need to go any faster. With supercruise, it'll still outrun anything else out there.

Answer 8

Chances are that it cannot fly faster than Mach 2.5, simply because the canopy probably cannot withstand the temperature. That was the limiting factor for the f-15, even though its engines could physically push it faster.  Same thing with the SR-71. The pilots operating handbook for the SR-71 has now been declassified for a few years, and it says things about how it can climb at mach 2.8 and that you have to reduce the throttle before leveling off in order to avoid breaking mach 3.2 and overheating the skin and canopy.

Top speeds dont really mean that much in reality, a fighter loaded for combat cant even come close to reaching top speed when loaded with tens of thousands of pounds of weapons and fuel, and here is where the F-22 has a real advantage. The F-22 carries its weapons internally, which means it has the same drag when loaded as unloaded, and on top of that it is capable of supercruise, flying supersonic without afterburners. Only one other modern fighter can do that, the Typhoon, but it still stores its weapons externally and so it cannot reach its full potential.  Even the F-15 can barely break mach 1.3 when loaded. The Mig-25 cannot even break mach 1 at sea level.

So when it comes down to it, the F-22 is capable of much faster performance than most other fighters in real life situation, and because it also has the element of surprise, it can catch most fighters before they even have a chance to use their great speed.

Answer 9

* Maximum speed:

          o At altitude: Mach 2,25 (1,500 mph, 2,414 km/h)[86]

          o Supercruise: Mach 1.82 (1,220 mph, 1,963 km/h)[86]

    * Range: 1,600 nmi (1,840 mi, 2,960 km) with 2 external fuel tanks

    * Combat radius: 410 nmi[83] (471 mi, 759 km)

    * Ferry range: 2,000 mi (1,738 nmi, 3,219 km)

    * Service ceiling 65,000 ft (19,812 m)

    * Wing loading: 66 lb/ft² (322 kg/m²)

    * Thrust/weight:

          o With full internal fuel: 1.09 (18,000 Pounds)

          o With 50% internal fuel: 1.26 (9,000 Pounds)

    * Maximum g-load: -3.5/+9.5 g

No, it can't.

There are faster planes than the F-22 you know

e.g

Su-37

    * Maximum speed: Mach 2.5 (2,500 km/h at high altitude) (1,550 mph)

    * Range: 3,700 km (2,230 mi)

    * Service ceiling 18,000 m (59,100 ft)

Answer 10

A buddy of mine flies them in Alaska. The top speed is classified, so no one can truly answer this.

I know I flew my Hornet against them and couldnt see them on radar, I was hoping to track their speed that way.  :)