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Z1pp0

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Viewing 15 posts - 121 through 135 (of 186 total)
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  • in reply to: CVF #2078961
    Z1pp0
    Participant

    ..Could not operate when the rotors a fully forward during level flight????:confused: …:

    Uhhmmm.. no I never claimed i couldn’t operate in that configuration. I mearly pointed out that there would be interference for the radar signals.

    Like swerve (and Jonesy) said you could make the software ignore certain signals. An interuptor kind of like the guns on WWI fighters that were shooting through the props. But that is still not good for optimum radar coverage…

    \Dan

    in reply to: CVF #2079225
    Z1pp0
    Participant

    Well, considering the Thales Cerberus System doesn’t have a blade/radar interaction problem. Frankly, I see no reason why another similar mounted system would????:confused: :confused:

    Altitude and endurance are the most important factors for this kind of survailance. The higher the altitude the better the range of your radar. And endurance for longer time on station.

    To achive the best results with a V-22 you would have to tilt the rotors fully forward. In doing so any top or bottom placed antenna would have interferance from the rotors. Possibly to the extent of uselessness.

    To fully get away from the problem of rotor interferance you have two options:
    1. Mount the antenna in a front and rear manner a la Nimrod AEW. Which apart from beeing extremly ugly would require a rather extencive R&D program strenghtening the airframe, repositioning the refueling probe, repositioning the stabs, (re)testing the handling charateristics etc.
    http://www.fas.org/man/dod-101/sys/ac/row/nimrod-aew.jpg
    http://www.fas.org/…/sys/ac/row/nimrod_aew3.htm

    2. Mount the antenna just like the TOSS but never tilt the rotors fully forward and accept a lower max altitude and less endurance. Unless you are satisfied with only seeing the rear hemisphere.

    Given todays political climate, bean counters and forseabel future option 2 seems to be the likely choice.

    in reply to: CVF #2079240
    Z1pp0
    Participant

    Well, how would the Thales Cerberus System work on the Osprey then????

    Like I said before. Tilt the rotors to 30degrees (or whatever) so that the blades dont go under the fuselage. That way the antenna would have no interference from the blades.

    http://www.dhadm.com/images/uploads/800px-V-22_Osprey_tiltrotor_aircraft_thumb.jpg
    Picture from http://www.dhadm.com

    The drawbacks would be lower max altitude and/or higher fuelconsumption. Unless the rotors are manufactured from non radar reflective material. Then there wouldn’t be a problem. Except for development cost… *sigh*

    OR you could just accept signal degradation in the forward sector and tilt the rotors fully forward. That would be recomended if you needed to get away from danger faster. :/

    \Dan

    in reply to: CVF #2079245
    Z1pp0
    Participant

    Don’t the French and Russians have a long rotating arrays that can mount from the bottom of Helocopters in such a role?:rolleyes:

    The French Horizon is a battle field survailance platform like JSTARS.
    http://www.aviastar.org/helicopters_eng/snias_cougar-aew.php
    http://www.aviastar.org/foto/snias_cougar-aew.jpg

    Kamov Ka-31
    http://www.acig.org/exclusives/aero/acig_aero05_navy_heli.htm
    http://www.soldiering.ru/avia/helicopter/kamov/ka31_00.jpg

    But you would still have the propblades interfering witht the antenna signals. Maybe if you keep the rotors at say 45 degrees so the rotors dont come under the fuselage. But then you still wont be abel to go as high up as if you tilt the rotors to 90 degrees. Altitude is important for an AEW.

    \Dan

    in reply to: CVF #2079250
    Z1pp0
    Participant

    ….
    In terms of Osprey being able to carry a larger radar, I am not so sure – you cannot have the radar above the fuselage without preventing rotor folding, and side mounts would be difficult to engineer….

    Difficult but not impossibel. That said the greatest obstacel is not the folding but the interferance with the propblades. They would interfere with the radar signal. It would be better to mount the radar like on the Nimrod AEW. Ugly but better for the antenna. It would also present a problem for fitting it in a small carrier lift and hangar, since it would be longer.

    \Dan

    in reply to: Your favourite what-if fighter #2480006
    Z1pp0
    Participant

    One of the more realistic “what-ifs” – LTV A-7F.
    Think it would have been a very useful machine.

    Ad a pointed nose with a A/A radar and you have the ultimate last gunfighter!! 😛

    btw YF-23 is my favorite. I would like to see a very similar aircraft in F-5 size with better roll rates :diablo:

    Dan

    in reply to: Best Recovery Story? #1239231
    Z1pp0
    Participant

    P9374?

    Can someone enlighten me about this one? Seems to be a good sorce for a modeling diorama. 😛

    \Dan

    in reply to: Hornets 'n Harriers: Question #2485838
    Z1pp0
    Participant

    ….
    gets ramped up so one would think they can figure this out.

    DAVIS: BIGGEST JOINT STRIKE FIGHTER PROBLEM IS PRODUCTION COSTS

    _______________________________________________

    Date: February 22, 2008


    “We’re scrapping probably 90 percent of the titanium it takes to build these airplanes because of the way the machines cut and drill and shape parts, and we’ve got to figure out what to do with that,” the two-star said. “We’ve got to reduce the cost of what it takes to build these airplanes.”

    http://defensenewsstand.com

    Forgive my ignorence but is it not possibel to remelt the titanium and/or slim down the parts production so you dont waste so much titanium?

    \Dan

    in reply to: Yuck! #2552354
    Z1pp0
    Participant

    LOL! :diablo:

    I envy you. The pilot training I mean, not the “decoration”. I think you made the right choice of profession. Did you make your solo yet?

    gl on ur next flight
    /Dan

    in reply to: F104S Starfighter cockpit layout/pictures #2504720
    Z1pp0
    Participant


    Wasn’t the whole purpose for the S designation to relate to the fact that it’s carrying the “S”parrow missile?

    Actually the “S” was supposed to be for “Spey”. The Italians wanted to integrate it but the US said no. But you are still right about the Sparrow beeing used before the Aspide.

    /Dan

    in reply to: Russian Strategic Aviation #2537831
    Z1pp0
    Participant

    Ok, so they don’t technically call it “strategic aviation”, but you lot might find this of interest:

    http://geimint.blogspot.com/2007/07/russian-strategic-aviation-imagery.html

    That’d be my new blog site as well, if you had the old one bookmarked for the military stuff.

    Hi Sean.

    You are right I did find ur blog interesting 🙂 Well done!

    /Dan

    in reply to: F-16 vs B-1 Red Flag #2542143
    Z1pp0
    Participant

    ….

    Is the B-1 pilot going to be awarded with a technical kill? j/k

    LOL. The cameraman didnt even notice the F-16 tipping over XD

    Thx for sharing. ATFS_Crash I always find ur post interesting, now one of them is even funny :diablo:

    /Dan

    in reply to: week aboard the HMCS Calgary #2059358
    Z1pp0
    Participant

    Nice pics! 🙂 TY for sharing them.

    /Dan

    in reply to: U-2 carrier operation and other recon missions #2523947
    Z1pp0
    Participant

    I heard a story of an aircraft (I think it was a U-2 but I’m not positive) …
    ….

    Did you know that we occasionally flew armed reconnaissance missions and in some cases actually exchanged fire with the Soviets with the aircraft like the RB-47?
    ….

    Hi AFTS_Crash.

    Nice post. 🙂 I have read about these two stories in a magazine before. But I have never heard anything on the U-2 Glider and RC-130 mission over Armenia before. There is a story about a J-33 (Swedish Air Force Venom) making a similar long deadstick flight back to base. I will try to find some online reference about that.

    /Dan

    in reply to: METEOR missile trials in Scotland #2546373
    Z1pp0
    Participant

    Whats that pod the 39 is carrying on the centerline pylon?

    It’s a camera pod for testing purposes. To record the launching secuence.If you look at pic’s of development Gripens you will see it quite often. 🙂

    /Dan

Viewing 15 posts - 121 through 135 (of 186 total)