http://forum.keypublishing.co.uk/showpost.php?p=1321013&postcount=1
its best summered up in signatorys thread..
it says in swedish:this is the gripen A, new measures have been made with C/D and lastly NG.
That’s the FOI paper I am referring to.
I read the paper by Google Translator, and all it said is “Radarmalarea 0,1 m2” was an assumed value for modeling and simulation.
There is no mention at all that a real Gripen flying with realistic weapons and fuel load was actually measured to have that RCS value.
Its more like gripen NG:s, still it´s probably an rcs of under 0,1 m2. Sweden do not need stealth for its fighters or the price of them..right now..
Neuron will probably be the seed for next next generation….and that will be a all european platform..probably…
Is there any evidence about RCS 0.1m2, other than the FOI paper?
The FOI paper seems to say that the Gripen was just assumed to have a RCS figure of 0.1m2 for modeling & simulation purpose only.
http://forum.keypublishing.co.uk/showpost.php?p=1321013&postcount=1
Thats FOI papers, science institution for warfare, thats reliable
Isn’t the number “Radarmalarea 0,1m2” just an assumption taken for the purpose of modeling and simulation?
Is it actually tested result by flying a Gripen with useful load against real airborne and ground radars?
I’d appreciate if someone could fully translate attached pages into English.
You are forgetting:
RCS less than 0.1m2; AESA; IRST; world class EWS especially developed to handle Russian opponents; strongly improved MMI, improved sensor fusion, world class data link; topped with Meteor and IRIS-T.
To me the 6 to 1 ratio actually sounds very credible.
L
Has Saab officially claimed that the Gripen NG’s frontal RCS is less than 0.1m2?
What are the chances of S. Korea, Japan, and SAAB to join on that proposal ?
Very low.
Japan has its own stealth fighter technology demonstrator program called ATD-X Shinshin. 8.5 billion yen is allocated to it in FY2009 (10.4 billion yen was requested though).
Sunho
Try that against a Kara or Kresta II and get back to us with the results. 😉
Friendly fire damage is one thing, but a faceoff between hostiles is a different matter.
Nobody knows for sure whether Karas and Krestas were too dangerous for USN or USAF attack aircraft to approach. Anyway the US planned to use anti-radiation missiles against surface warships in the 1970’s.
For the past 40 years, the USN’s primary weapon against hostile surface combatants is the SSN. Aircraft could find surface combatants and relay coordinates to the SSNs and the SSNs would take care of the problem. Surface combatants were too dangerous to approach (SAMs) unless you were willing to escalate to toss delivery of nukes.
For small surface crafts without SAM protection, Rockeye cluster munitions delivered by A-4/6/7 or F-4 would take care of the problem, or Walleye if available.
A Wild Weasel Phantom inadvertantly shredded the topside and CIC of the USS Worden, a Leahy-class Terrier missile cruiser, by two AGM-45 Shrike anti-radiation missiles off Vietnam in April 1972. It took about ten days to repair damage at Subic Bay.
I believe the 1970’s surface combatants with SAMs could be adequately dealt with by SEAD aircraft.
Sunho
As Distiller says,
The Walleye was the antiship missile. Carried, if memory serves me right, by the A-6 and 7.
The Bullpup was another option, and could be put on A-4s as well (There even was a nuke tipped one)And, don’t forget the S-2 and S-3, armed with torpedoes, as well as the various air dropped mine systems.
It all depends of the threat you’re facing, of course..
The A-4 Skyhawk also used the Walleye in the Vietnam war.
Another Bullpup shooter was the Royal Navy’s Scimitar F1.
Sunho
Below is Ed Rasimus’s post about land-based USAF Phantoms’ anti-ship tactics in the 1970’s.
Dunno where you were in the early ’60s, but Walleye didn’t come into the inventory into quite late in the ’60s and even then wasn’t used in any great numbers. Attempts in SEA were minimal and the results from first generation LGBs were offering much better results.
Bullpup B was deployed in large numbers but the small warhead made it a poor choice for ships (along with the highly vulnerable delivery profile). The AGM-12C version had a bigger warhead, but still demanded a long, straight, post-release flight by the delivery aircraft to successfully guide the weapon. Still minimal size for a warship.
I was doing TASMO tactical development during the mid ’70s with the F-4 out of Torrejon Spain. (TASMO=Tactical Air Support of Maritime Operations, i.e. attack by land-based air of naval vessels–a NATO term). We would have liked third-generation LGB, but only the F-111Fs out of England had that, so we primarily planned with the available bombs which were the Mk-8x series of GP low drags.
Concept was strictly roll-back with packages on average of 12 aircraft, usually with chaff support, doing low altitude ingress to pop-ups on the first combatant encountered. Pk ranged in the neighborhood of .8 for these with a seaworthiness kill (stop the vessel manuvering potential).
Sunho
It cost about $20B (1996 dollars) to get F-22 through Engineering and Manufacturing Development (EMD). That included designing the airplanes, manufacturing tooling, support infrastructure, building 9 flight test airplanes, completing flight testing and completing Operational Test and Evaluation (OT&E).
F-35A/B/C is supposed to cost about $40B (2001 dollars) for System Design and Development (SDD), the equivalent of F-22 EMD.
Thanks for the reply.
Any info about how much was spent until the first YF-22 flew in 1990?
As I wrote earlier, my aim is to compare the costs for making a flyable prototype and a combat-ready fighter.
df: you are pursuing a will o’ the wisp. UK MoD has stated a £20Bn. “total procurement cost” for 232 (=£86Mn. per), and a unit cost of £64.8Mn. That would (logically) include 100% of recurring unit production cost; 37% (the 1997 agreed share) of project-specific R&D; Lord-knows-what % of (intra-mural) Establishment work (visibly charged for by the firm Qinetiq since 2003; what with German/Italian/Spanish Govts.’ equivalent work?) Where do you want to put the costs of the (uncleared) gun? Of Meteor? If your intent is to compute the best-value product, or the incremental cost of collaboration across 4 Nations, vs. solo Sweden, then brighter folk than us have abandoned such efforts. Govts. don’t know; if they did they wouldn’t tell.
OK, can anyone please get the Gripen’s numbers that I originally asked from the attached graph?
1) all the money spent from the launch of the Gripen program in June 1982 to the first flight in December 1988
2) all the money spent from the first flight to the JAS-39A Gripen’s initial operating capability in 1998
Thanks in advance,
Sunho
http://www.eurofighter.com/downloads/Typhoon_study_final.pdf
Broadly, the costs of Typhoon production are allocated: 40% for the airframe; 40% for the equipment; and 20% for the engine. Support costs for Typhoon might be a further 50% of production costs. The total costs of Typhoon are estimated (2004 prices):
i) Development = Euros 18 billion
ii) Production (620 aircraft) = Euros 36 billion
iii) Support = Euros 15-18 billion
When the RAF’s Typhoon F2 was declared to have initial operating capability, I guess only 20 or 30 aircraft were produced. So the figure 36 billion Euros include hundreds of not-yet-produced aircraft, not only for the RAF but also for other partners.
Following a rash of commuter airliner crashes about 15-20 years ago, such as the one that killed former Senator John Tower and his daughter and the ATR icing crashes, there were news reports that some US operators were switching to jets because of a public perception that turboprops were prone to crashes.
They say that OPEC’s price runup about 35 years ago added a decade to the careers of some Valiants, Electras, and DC-6Bs.
Thanks for the reply. BTW any idea what replaced the Jetstream?
Any idea what types of aircraft replaced them in the US regionals?
I guess they were not replaced by same 19-seaters, but by larger ones like 50-seat CRJ200s and ERJ145s.
HOw abt the engines? SAAB has no experience in advance turbofan. Their gripen engines depend on US.
The KFX program dictates use of off-the-shelf engines such as GE F414, EuroJet EJ200 or SNECMA M88.