Do you really think that even if it was hit by a meteorite (!!!!), or some other more plausible external force, that the metal would remain pushed inwards ?
The volume of air forcing it’s way through such a relatively small hole would blow the metal back out at best, at worst you’ll have a big hole like this as the cabin air rips away the skin.
More possible an exloded emergency oxygen bottle.
“Ein solcher Fehler darf nicht passieren”
http://www.spiegel.de/reise/aktuell/0,1518,568216,00.html
http://www.spiegel.de/video/video-33514.html
Shows a ~3 x 4 m hole.
An another “Ground Braking Fighter”!
again youre mixing gains with with transmiting .its receiving end thats making gains and bad 70s era electronics didnt have sensitivity to make much bigger gains now possible.
also were talking head on engagments where loss for transmision is much less due to only periferal modules making beam stearing and ones around center dont have to also the angle for new catode closes with array is less then 20 degrees now making loses even more reduced for transmition phase.where angles get sharper pherits cause much bigger loses.
First should you understand how an ESA works!
http://www.radartutorial.eu/06.antennas/an14.en.html
The phaseshifter loss do not expire at 0° phaseshift.
What antenna gain is
http://en.wikipedia.org/wiki/Antenna_gain
Antenna gain – phasshifter loss – conector loss – conductive loss = resulting gain!
PESA also not forget is WW2-technology!
Austria pay 63 Millionen Euro „fly-away“ and 100 Million Euro system cost per EF. Germany pay 15.4 billion Euro that corresponds to 75 million Euro per EF whitout RD.
You forget possible EADS UV missile warner for the Typhoon!
DRDO and EADS develop advanced missile warning system for aircraft – ready for serial production news.
http://www.domain-b.com/aero/mil_avi/mil_aircraft/20080529_missile.html
MILDS AN/AAR-60
http://www.eads.net/1024/en/businet/defence/defelec/Produkte/helicopters/MILDS%20Copy/MILDS%20Copy.html
MSA and AESA no phaseshifter therefore no loss in the phaseshifter.
PESA need phaseshifter for the beamsteering, ferrit lenses high loss, less sidelobes. Radant lenses lower loss therfore time sidelobes.
Zaslon used ferrit phaseshifter for the x and for the y direction.
1700 emitters for X (antenna gain 36dB, pretty low for such a big antenna) and 64 for L (antenna gain 17.5dB).
PESA with ferrit phaseshifter are slow scanning and it’s difficult produce multipile Beams (only row and colums are adressable)!
Radant lenses are fast but make are hot nose and produce time sidelobes, beam direction undefined between switching!
Bars use a hybrid aray x is steered by ferrit lenses and y direction is steered by Radant lenses.
A F-18 can’t perform a cobra.
http://www.youtube.com/watch?v=4TEnD4UDOpE :rolleyes:
Yom Kippur War 😉
http://www.airpower.at/news06/0922_captor-e/index.html
CAESAR
1,424 T/R SMTRM (Standardised Modular Transmit-/Receive-Module) 64.5mm long, 13.5mm widht und 4.5mm height.
So what exactly is the obsession on this forum with frontal or minimal RCS? I definitely missed it, so can I please see the new aerial combat rulebook that says fighters are going to line up perfectly (or near it) head on and engage each other in only this manner.
From the side is the RCS for the Su-35 much worse.:eek:
Some great diheral reflectors like this 2 very extreme big 90 ° tailplanes.:rolleyes:
Vast gaps!:dev2:
A dual-band antenna system with electronic beam control for airborne radio-electronic systems. The antenna system (AS) comprises two phased arrays with the X and L frequency bands.
L and X Band are two different antennas and therefore need you more space.
The L-Band works better against RAM.
AAP-021 13db damping at 18GHz but only 3dB at 6GHz.
Germany tries to push stalled Eurofighter talks
BERLIN, July 11 (Reuters) – Germany’s Defence Ministry has suggested splitting up the planned delivery of the last batch of Eurofighter jets to four European countries in a bid to break a deadlock in negotiations over the multibillion euro tranche.
In a letter sent to his counterparts in Britain, Italy and Spain, German procurement chief Ruediger Wolf has offered a possible solution to the problem created by Britain and Italy who are considering cancelling or cutting their orders.
Wolf stressed there was a contractual obligation for the four nations to approve the third tranche of 236 aircraft and said he was worried about the consequences if the countries did not agree.
“My perception is that the procurement programme might develop into a critical situation if nations fail to define a common programme that will be suitable for all of us,” said Wolf in the letter, a copy of which was obtained by Reuters.
The letter, dated July 7, was also sent to NETMA, the arm of NATO that oversees the project.
“Germany could accept a two-step approach,” wrote Wolf.
“The first batch would be ordered when the contract is signed and the second step would be an option to be contracted at a later date, which needs to be defined,” he continued.
“In case some nations are not in a position to opt for this second step at the agreed date, the contract has to implement solutions to indemnify the other nations,” he said, noting that Germany intended to contract its whole tranche of 68 aircraft.
Wolf said the first part of the delivery should include a “substantial” number of aircraft, noting that Germany would expect more than 50 percent of the total originally agreed.
He said he wanted to get the contract signed within six months.
Under the original plan, Germany, Italy, Spain and Britain would have received the third batch of 236 aircraft between 2012 and 2017.
The Eurofighter consortium includes Britain’s BAE Systems BA.L, Airbus parent EADS (EAD.PA: Quote, Profile, Research) and Alenia, a unit of Italy’s Finmeccanica (SIFI.MI: Quote, Profile, Research). The aircraft engines are made by Rolls Royce (RR.L: Quote, Profile, Research), MTU Aero Engines (MTXGn.DE: Quote, Profile, Research) and ITP.
A Defence Ministry spokesman confirmed the existence of a letter in which Germany had outlined its position in further talks with partner nations.
Some lawmakers in Berlin have estimated the cost of the third tranche to be around 5 billion euros for Germany, bringing the total cost for the 180 Eurofighter jets in the three tranches to around 15 billion euros. (Reporting by Sabine Siebold; Writing by Madeline Chambers; Editing by Erica Billingham)
Hahaha you don’t say? 4+ G and 5G sound familiar? :rolleyes:
The Su-35BM is really not 4++ it’s more 4–.:diablo:
You meant it this way, didn’t you?
RCS = 0,01qm = 400km *0,24= 96km,
RCS = 0,001 = 400km * 0,13 = 52km,
RCS = 0,0001 = 400km * 0,06 = 24km
RCS = 0,00001 =400km * 0,018 = 7,3km
(your way of rounding numbers is a bit odd)These are the “exact” figures:
m² Distance [km]
3 400
1 304
0.1 171
0.01 96
0.001 54
0.0001 30For those who don’t understand jacksßit:
The returning energy to a detector from an emitter is a function of many variables including the area of the reflector. If we assume that at 3m² and 400km the returned energy is exactly the required threshold, we can use the formula to calculate corresponding distances. The problem: the area is under a “double squareroot” or n^.25 if you like.
I mean (RCS reduced /RCS orginal)^0,25 for tracking
(RCS reduced /RCS orginal)^0,5 for area search = as
(RCS reduced /RCS orginal)^0,75 for volume search = vs
I suggest Allen E. Fuhs Radar Cross Section Lectures. :rolleyes: