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  • in reply to: Iran army shot down of a United States Drone plane RQ-170 #2308863
    over G
    Participant

    Aviation Week is full of…seriously the things i have read from that page..

    So now the super stealthy beast is not that super stealthy because it was downed…

    The EF-111 was retired in the 1990s.

    Whatever

    in reply to: Iran army shot down of a United States Drone plane RQ-170 #2308879
    over G
    Participant

    A good majority of whom? Can you point to a single official US source claiming that stealth aircraft were and always would be invincible?

    This is not the issue.

    The big missconception is that stealth technology can work alone.

    This is not true, LO tactics are no done without ECM support, from the start the F-117 was meant to operate hidden in a ECM veil, put from other aircraft, like the EF-111.

    Stealth concept was never, is not, and will never be a snipper-like tactic where a lone B-2 goes inside the enemy territory launch a laser bomb, destroying the favorite limousine of a evil dictator just as a warning.

    To do so, that B-2 needs a pair of EF-111s, and depends on the effectivity of it partners.

    in reply to: Iran army shot down of a United States Drone plane RQ-170 #2309518
    over G
    Participant

    And probably this incident is revealing the real and definitive reason why UAVs are not viable as combat vehicles.

    Because cannot be supported with ECM, since they are very sensitive to it.

    And this is most likely the true reason why it was located and downed.

    in reply to: Iran army shot down of a United States Drone plane RQ-170 #2309593
    over G
    Participant

    Around 1,400 manned low-RCS sorties by the time that the F-117 was lost in 1999

    Well this, as well proves nothing about the effectivenes of stealth technology, since planes like F-16 and others did have better sortie-lost ratio in the war.

    Otherwise, the single mission the F-117 went without ECM support, and downed in that mission, proves a lot about how LO vehicles operations are done.

    Once again, the question boils down to how many losses in how many sorties,

    Who cares?, is the last stealth crap the USAF has.

    in reply to: Iran army shot down of a United States Drone plane RQ-170 #2309600
    over G
    Participant

    Would you rather a Gary Powers II was on board?

    Is not like I really care, it had been annoying though, with all the drama over human rights and all that hypocrital yadada..

    in reply to: Iran army shot down of a United States Drone plane RQ-170 #2309635
    over G
    Participant

    Time to celebrate.

    The childish belief of stealth snipper-like operations and the realibility of the UAV concept went down by a single shot…and that was even an EM shot.

    And all that with no man killed, or prisioner drama, congratulations to the iranian forces

    Bet the US forces forgot ECM cover for stealth operations again.

    in reply to: Pak-Fa Thread episode 19 #2310915
    over G
    Participant

    F-22 RCS described as ‘marble-sized’ (at certain angles I guess)

    Even a truck has a ‘marble-sized’ RCS reading at certain angles, on real testing (not optical simulation) the return peaks are very variable.

    The ball is a glass ball, is glass, glass is transparent to radar, so who cares?

    in reply to: Pak-Fa Thread episode 19 #2313282
    over G
    Participant

    Construction tecniques in the T-50 seems to be more advanced than the F-22 ones, since, at least in the nose, it assembing requires less riveting.

    I can’t find high resolution pictures of the Raptors wings to do a comparation.

    One interesting detail is that the radome is not tilted backwards, seems the russians have a great confidence on their first operative AESA, lets see.

    in reply to: PAK FA episodeⅩⅧ #2375995
    over G
    Participant

    Wonder if is possible to know the weight of the aircraft by its volume, first we should take the volume of different planes and campare with their empty weights, so we can get a factor, then having the Pakfas volume we could multiply it with the constant.

    18TM empty is high, the plane is heavy, probably because the bulk of electronics the thing is meant to get…L-band radars and side-cheek arrays.

    over G
    Participant

    December 1966

    I would like to know how this report can fit with the operations in Vietnam, where with heavy ECM support, fighter support, and tactical advantages (a lor of fuel reserves) bombing campaigns were still a challenge.

    The B-47 medium bomber was an air defense nightmare! It flew very high, near a high mach number making it virtually impossible to intercept. Plus the USAF had 1,500 B-47s

    1500 fried chickens for SA-2 batteries

    in reply to: PAK FA episodeⅩⅧ #2309946
    over G
    Participant

    Surprise..is not true

    in reply to: PAK FA episodeⅩⅧ #2309956
    over G
    Participant

    he probably means its not as prioritized, but will still have its importance.
    supersonic maneuverability on the other hand is a different story

    ATF parameters for supersonic maneuverability were pretty conventional, 5-4 sustained gs at around M1.5, is more/less, the same numers for most 4th gen planes.

    All the information over the flat exhausts for the T-50 tells that such devices are meant for short take off and landing, no stealth claims, if russians will implement such system in the PAKFA program, will be because this requirement, rather than the stealth thing.

    Probably the final T-50 will get more zigzag thingies around, i don’t see why they should ruin an excellent design as is right now.

    in reply to: Iran stealth model? #2309984
    over G
    Participant

    They don’t have yet the mandatory technological capabilities.

    For designing a LO airframe, they have.

    For the engines…with all the LO compromises…well, that’s another story.

    in reply to: PAK FA episodeⅩⅧ #2309988
    over G
    Participant

    Maneuvarability won’t matter for much in future air combat

    Maneuvaerality was never important in any modern USAF campaign for the 3 last decades..

    But USAF leaders are not kids playing pc-games…the ATF was designed to counter the soviet union, not a 3th world air force.

    But still the F-22 was designed with maneuverability in mind…and actually was selected over the F-23 because of this factor.

    Maneuverability is obsolete if you outnumber your enemy 10:1 in the sky…

    Will India outnumber 10:1 the China air force?…you are dreaming cowboy fantasies that no even USAF generals are dreaming.

    in reply to: The jet propulsion with closed combustion type #2319608
    over G
    Participant

    Hello qumf, interesting idea you are posting here, but i do agree that this is not the best place to discuss it.

    Anyway, closed combustion would be nice, and should increase the thermodynamic efficiency, but should, also, decrease exhaust velocity, I would say that this idea would be suitable for engines with very by-pass ratios, but not for superonic engines.

    There are many other issues that are mechanical related with these kind of engines.

    And probably the power output would not be as big as conventional engines, probably the weight-thrust ratio of such engine will be higher, because the combustion chamber must be divided working ony part of the chamber at time.

    Anyway, enjoy the forum, is an aviation fan forum, as all of us are.

Viewing 15 posts - 76 through 90 (of 1,640 total)