Aussie Digger As long as the threat aircraft doesn't possess a laser warning receiver it is totally passive I'm sure you mean?
Proves you DONT understand what the laser rangefinder is for.
Simply put: Used to give range for A2A/A2G guns (and perhaps EM AASM) but totally unnecessary for MICA IR, plus already in used on Jaguars and Mirage F-1 CTs in the Air-to-Air/A2G gunery only.
Aussie Digger And as long as the pilot is good at "peering through a straw" I'm sure the OSF will provide excellent BVR detection capabilities...
Same here; it works like the radar no more no less.
Not everyone have been following this that close and believe me, they know tons more than you will ever do at MBDA and GIE...
The IR homing head is unique for a missile with this range and its many features include excellent angular resolution (dual band imagery) and total stealth. The passive homing head enables completely "silent" interceptions when it is used with an OSF (Front Sector Optronics). The pilot can also use the MICA IR for discrete optronics monitoring, in addition to the active monitoring radar on his aircraft throughout the duration of the mission.
http://www.mbda-systems.com/mbda/site/FO/scripts/siteFO_contenu.php?lang=EN&noeu_id=124
On the subject of optimisation:
Rafale is a descendent of the ACX programme (and not AMX as i previously typoed), there was a carrier-based version proposed as ACM.
This was predominently a (1983 discloded) M 2.2 design answering to AdA requierements for a high-speed interceptor with a high level of maneuvrability.
Basic design aims were for a highly maneuvrable aircraft under combat conditions and optimum low-speed performances for STOL.
These were previously difficult to combine and lead to the serie of the Mirage Gs sweep wing prototypes.
http://img509.imageshack.us/img509/8348/acf40bio7.jpg
With the event of digital FBW and delta-canard configuration, the 1970's solution was then considered as mechanically obsolescent. (weight, complexity, vulnerability, serviceability).
A full scale mock-up was displayed at Le Bourget Airshow in 1983 (I was there BTW) and it was dubbed "John Player Special" by the British press due to its black and gold painting scheme.
http://img108.imageshack.us/img108/6595/acxparis832hk5.jpg
Requierements for strike capabilites weren't planned to be anywhere near that of the actual Rafale i.e 3.500 kg of modern weapons at up to 350 nm from base, that's 1.500 kg less and 300 nm short of a serie Rafale.
Its combat weight was predicted to be around 14.000 kg with the same overal dimensions of the Rafale A.
The emphasis was in the A2A capabilties with rapid firing of at least 6 BVR AAMs in rapid succession being considered as essential by AdA.
From a design PoV the evolution is obvious and owns much to other Dassault experimental aircrafts such as the Mirage 4000 and the Mirage III NG.
AXC/ACM original wingplan was similar to that of the european EAP, a crancked delta.
http://img116.imageshack.us/img116/126/eapacxio6.jpg
From then on the design followed an evolution starting with the redimentioning of the two parts of the crancked wing.
http://img443.imageshack.us/img443/5138/acxacr9.jpg
Noticeable differences are the canards sweep angle and the shape of the bulge where they are rooted, the position of the inlets lips, the deletion of the "souris" and general sreamlining of the whole design.
The V-shape inlets and wingplans of the A were the results of Dassault experience with their prototypes Mirage 4000 and III NGs.
http://img50.imageshack.us/img50/4306/iiingat3.jpg
Rafale A and Mirage III NG had identical wingplans and FBW.
In the A design, Dassault started developing the pressure characteristics of the nose-to-inlets shape following their experience with the AREA-RULE-shaped nose cone of the 4000:
http://img501.imageshack.us/img501/9808/acfareaam6.jpg
The boundary layer is controled by the reccessed area, pressure reduced by expension and diffused evenly around the wings using expensive, then compressive and expensive waves to energise the airflow around them.
This was a very useful aircraft BTW, the 4000 redefined the whole conceipt of AREA rule and whe way to uses the characteristics of shock waves over the airframe in an optimum maneer. (LOW overal wave drag ratio).
Here you can SEE the evolution between the 2000 and 4000 and Rafale inlet designs.
http://img513.imageshack.us/img513/8923/evo02ls4.jpg
These design features allowed Rafale to demonstrate a SUSTAINED M 2.0 at 42.650 ft on 30 April 1987 with an airframe not yet fully optimised and less instaled power than the serie aircraft.
As a matter of FACT:
ONLY 121.2 kN (vs 150.0 kN today) were enough for it to reach M 2.0.
It was rolled out on 14 December 1985, exceeded Mach 1.3 during its FIRST flight on July 1986 and M 1.8 during its 6th flight.
At the time it was equiped with TWO F-404-GE-400 of 71.2 kN, the FIRST M88 wasn't instaled before mid-1989.
M88 flew FIRST on Rafale A on February 1990 and reached M 2.0 at close to 50.000 ft while staying in DRY power, only the F-404-GE-400 was used at full military power.
http://img108.imageshack.us/img108/6152/frommiragetorafale5lvqq8.jpg
Source: SNECMA.
Here a view of one of the preserie aircrafts features:
http://img125.imageshack.us/img125/4672/intakeleftarrangementyg6.jpg
A is the airscoop feeding the secondary airflow for engine IR reduction.
It aslo is a point where a compressive shock wave takes root.
Airflow velocity is reduced, pressure increases as well as temperature and air density.
B/E are the points where expensive waves takes root.
Airflow speed is reduced, temperature, air pressure and density decreases.
The airflow then expends from B/E over the surface of the fuselage/wing junction, thickening the boundary layer and adding its own velocity to it.
This is increasing the speed at which boundary layer dynamic stall can occur, dynamises the airflow around the fin at high AoA increasing YAW stability and control authority.
On Typhoon/Mirage 2000 strakes are used for the purpose but they increase DRAG and EM signature while having a much lower dynamic effect on the boundary layer and local airflow itself.
Point C, the junction LEX/Intakes lips is where the LEX shock wave will take root.
It is designed similarly to that produced by the diffusers (hitting the intakes lips to provock a milder shockwave, reducing airflow velocity further) to reduce transonic and supersonic drag of the wing leading edges and surfaces.
This feature allowed the designers to maintain a moderate wingsweep more suited to higher AoA and still reduce the %age of the wing staying subsonic at low supersonic speed, reucing wave drag further.
The difference between the A and the serie aircraft resides MAINLY in this drag reduction optimisation:
http://img517.imageshack.us/img517/3810/avsseriecq0.jpg
To OPTIMISE the characteristics of the design according to requierements, designers repositioned the main wing from shoulder-mounted to mid-fuselage.
This is ALSO a feature known to reduce wave drag and it allowed for the redesign of the crancked wing to a straight 48* + 70* LEX.
The LEX gives a much better high Mach characteristic than a crancked delta and provide the wing with energised airflow at their junction with the fuselage.
The large integral volume of the wing-fuselage junction allows for a higher internal fuel volume and reduces wave drag further.
More to the point, this different configuration also allowed them to increase the canards surface by 30% and position them in such a way that when fully deflected upward, they BLOW the upper wing providing with extra airflow in the same area.
RESULTS compared to the Rafale A:
A SIGNIFICANT gain in approach speed and AoA, low-speed characteristics, high AoA characteristics, total payload, number of hardpoint both wet and dry, drag reduction throughout the whole of the flight envelop, range, corner speed, cockpit visibility and layout.
Rafale are capable of higher controled AoA on aerodynamics only than F-22, Typhoon, Gripen, X-31 and have a similar corner speed to Typhoon...
Thats for those laughing at Dassault "NOT KNOWING WHAT DRAG IS" in view of the aircraft exeptional range and payload you guys have to go back to basics.
TO finish:
The airframe was simplified with deletion of the A airbrakes, airscope at fin root deleted, the number of control surfaces was reduced, uses of lightweight materials increased to 24% of its weight and 70% of the wet reas, L.O features included in its design, nose shape redesigned for better visibility forward at high AOA for carrier Operations, structural G-load are 90% above 9G guaranteed by manufacturer etc.
People think of Rafale as being a 1985 design when in reality it IS a 100% totally NEW and optimised aircraft with performances to beat.
Full scale developement wasn't authorised before April 1988, only three years before US DoD did the same for F-22A (August 1991) and Rafale C01 was designed and built in just 18 month with a first flight in 19 May 1991.
FIRST FLIGHTS:
Rafale A = July 1986.
YF-22 = 29 Sept 1990.
So if you wanted to KNOW what OPTIMISATION meant to Dassault designers i think this answers all your questions and perhaps more.
One question you can answer to ME now, considering that aircraft generations are <> more than 15 years or so, why is that you guys keep considering Rafale as being of an "older Generation" than that of the Raptor?
http://img117.imageshack.us/img117/5237/mirageiiio01gv4.jpg
About supercruise, since they knew about it most of you werent born, there is NO question on how they would manage to have this Rafale flying at 1.4 DRY in A2A configuration.