In an experiment to determine the stealth characteristics of the design, Northrop-Grumman built a full-size reproduction of the V3 incorporating a duplicate glue mixture in the nose section. After an expenditure of about US$250,000 and 2,500 man-hours Northrop’s Ho-229 reproduction was tested at the company’s classified radar cross-section (RCS) test range at Tejon, California, where it was placed on a 15-meter (50 ft) articulating pole and exposed to electromagnetic energy sources from various angles, duplicating the same three frequences used by the Chain Home radar network of the British in the early 1940s. RCS testing showed that an Ho 229 approaching the English Coast from France flying at 885 km/h (550 mph) at 15 – 30 meter (50 – 100 ft) above the water would not have been visible to Chain Home radar, while a Bf 109 or Fw 190 was visible up to 129 km (80 miles) away.
http://news.nationalgeographic.com/news/2009/06/090625-hitlers-stealth-fighter-plane.html
San Diego air museum will house replica of German stealth prototype
http://www3.signonsandiego.com/stories/2009/jun/23/san-diego-air-museum-will-house-replica-german-ste/?uniontrib
Nonsens, what wave length use the Home Chain? The inlets are smaller as the home chain wave length and produce therefore no Radar return!
Radar travels at the speed of light, so whether a plane is flying at M.8 or M1.8, the time for the return to come back is neglible.
Yet can the Raptor traveling with ligth speed. First the Radar beam travel with the speed of light. But this is only the half story. Your Radar transmit not simultan over 120° x 120° and the beam must travel twice the distance, to the Radar target and from the target to the RADAR! Your RADAR transmit a puls then listen it and in this time transmit it nothing and the beam is not moving you have dead time and delay! The scan speed and max detecting range vary with the chosen PRF (Puls Repretition Frequency) and modulation. The target retransmit the beam sometimes not simultan and out of phase travelling waves, creeping, (RAM) etc.
The Radar Computer need some time for operating. Puls Doppler have not only benefits it’s degrade the max distance!
Cool supercruise pic from the Northern Edge 2009 joint exercise…
Perfect invisible on long distance.
I think that show not super cruise, the Mach cone angle is much to flat.
μ = arcsin (1/M)
That is a Prandtl–Glauert singularity (vapor cone) near Mach 1.
That is what the French Le Terrible achieved in shipyard trials and hold since 1940 undisputed the world record.
Then why is a difference only indicated for the F-22 & not every aircraft?
But there is a little discrepancy between the liters and the gallons of -11%!
65mph is 56kn or 105km/ for this speed must the Nimitz surfing and is 6kn behind the asymptote (50kn) for a Wellenbinder (special case of a displacer).
How long should the propeller last on such a speed? Kavitation eat your ship’s propeller very fast. Surfing is for a displacer dangerous –>Seeschlag–> impact of breaking waves and make it top heavy (top lastig).
I think the Typhoon pilot said something like that the Typhoon has got about the same chance downing an F-22 as a legacy teen fighter has got downing a Typhoon.
Don’t remember whose words exactly those were though.
I wouldn’t worry too much about being shot down by Eurofighter Typhoons. Killing your allies with ‘friendly fire’ is another area of clear US military superiority… 😉
If clean =AIM-120s, what would an EF carrying nothing be considered?
Clean in aerodynamic mind is with the AIM-120, sometimes cause more area less drag.
But clean is an EF with AIM-120 and without drop tank on the same ideal dry day. But the always quoted 1.22 Mach achieved in Signapore was achieved with a Trainer T1 with center tank, and six rockets and intrims FADEC software, on a hot tropical day in tropical latitudinal and not in Alaska or desert climate like a F-22. Mach is not a fixed speed mark.;)
There is absolutely nothing there which indicates that the F-22’s “Mission 1” requirement does not include 30+ minutes flying at supersonic speed.
The internal fuel capacity of the F-22 is 20,650 lbs as per ground crew safety document Technical Order 00-105E-9. As I have posted before, I believe that the differnece between the 20,650 lbs of fuel ground crews put into the F-22 & the “18,000 lbs” indicated is that the F-22 requires a ‘reserve’ of ~2650 lbs of fuel in order to maintain its skin cooling.
Or need space for expansion it’s a dumb idea, to fill up 100% with cold fuel that then start to expand in your F-22 and your F-22 begins drip fuel.
A expansions reserve of 10% is common.
Skin cooling at a composit surface. How usefull should this be?
Or how will you cool the moveable composit leading edge flaps with the embedded VHF antennas the same with the tail leading edge?
Then is the heat accumulating abilitys of JP-8, JP-8+100 with JP-7 not comperable! JP-7 store most of the heat through catalytic endotherme cracking this exeed the heat dissipation ablitys of JP-8+100 about 500%!
I think the crash that happened off Brazil by the Air France aeroplane was an A340 which has 4 engines.
Think again, it was an A330.
Just like the last time the EADS NG bid was rejected right???
But who cry?
Indeed.
For HOBS in the F-22 need you first LOAL ability for IR and that is only available with the increment 3.2! AIM-9X and AIM120-D around 2012. Yet available AIM-9M, that mean door open hang the AIM-9M in the air.
1. Run up first the anti roll gyros.
2. Lock to a target.
3. Only then fire.
4. Or you can forget your missile!
You can fire a AIM-9M without running gyros but the IR-sensor do not work. You can cue the AIM-9M IR sensor with Radar but it can’t lock to a target intern.
Some maths that make a max speed of 43kn at a waterline length of 312 m for the Nimitz class and a efficient speed of ~35kn.
Length runs!