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Subject: Highly Autonomous Excalibur UCAV to take flight in 2009
DarthAmerica    6/2/2009 5:51:53 PM
Excalibur

Excalibur is a purpose-built armed, tactical UAV. Excalibur fills a gap between current weaponized UAVs and manned strike platforms that provide tactical air support. To enable the attack role, Excalibur will be compatible with Hellfire, APKWS, Viper Strike and other small, precision-guided munitions recently developed by the Department of Defense.

Excalibur will use a turbine-electric hybrid propulsion system to give the aircraft VTOL capability while allowing optimization of the turbine engine for horizontal flight. The aircraft's advanced flight control system operates with a high level of autonomy. The aircraft is not remotely piloted, therefore operators are able to focus on mission planning, finding, and engaging targets instead of flying the aircraft.

Excalibur combines VTOL launch and recovery, high-speed flight (in excess of 400 knots), and low speed loiter (100 knots) into one aircraft. Excalibur can operate in a STOL or STOVL mode for increased mission durations or payloads.

Aurora is under contract to the Army's Aviation Applied Technology Directorate to design a 700 pounds Excalibur technology demonstrator aircraft, will have it's first vertical takeoff and landing (VTOL) flight test planned for summer of 2009
 
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DarthAmerica       7/25/2009 4:55:46 PM

He nailed you on point on the tech and on your lack of technical competence to address this subject in those points.

Seems to me that you yell at those who zing you on point like that.

Get over that problem and address the TECHNICAL objections directly, that is if you can..

Herald

In case you haven't figured it out, you are being ignored. NO ONE, has nailed me on anything troll.

-DA 
 
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neiyold       7/25/2009 4:57:42 PM




YOU DON'T KNOW ENOUGH ABOUT IT TO SAY THAT YET. Have you seen PDR or CDR documents? Is the design complete and flying operationally? If you answered no, you don't know.



 



Hmm, shouting at me, I must have it a nerve.  Is it flying?  Preliminary Design Review, nope havent seen it.  Generally those are CC.  Or do you mean a Publicly Documented Report, nope havent seen that either. Have you seen the design documents, not some website mumbo jumbo, but the actual feasibilty study, or design review, or status reports? 



 



Actually, I never said it would not work, just that, as others have said, it does not look to be an affordable game changer given the current information available.  I can comment based upon what I have seen...or not seen.



 



Is the design complete and flying operationaly?  Not a clue, do you know?  If you answer no then you cant tell me I dont know.  Two half blind men do not a cyclops make.  If you do know, say so.  If you "are not allowed" then why even posting about it here, that would surely not be professional!  Sheesh if I pulled a stunt like that...










Not trying to yell. Just saying that we don't really have enough info to judge the UAV design yet with anything other than opinion.




-DA 

Yes, but intelligent opinion.  If you ask a history major with focus on 20th century western civ., his opinion on the long term consequences of the Clinton years, you would, normally, weigh that opinion more heavily than if you were to ask a physician.  Both are professionals, different subject matter of excellence.  However, if you were to ask history major with a focus on Roman history about the long term consequences of the Clinton years, then his opinion would still in all likely hood be of greater worth than the physicians because is still practiced in the art (and science) of history.  Same effect here, anyone involved in product development engineering can look at a concept and make a relative judgement on the merits  and faults.  Identifiying the faults is how we determine if the risk is worth the investment.  To me (opinion time), givent the complexity of the flight profile and limited weapons release, a helicopter type UAV seems immiently more practical and less prone to accident.
 
Caveat, I do not claim to be an aerospace engineer of any type.
 
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Rufus       7/25/2009 5:02:48 PM
You guys are missing the forest for the trees a bit on this one.
 
The point here isn't to say whether this specific design is totally awesome or not.
 
Personally I think it looks needlessly complex for something with a relatively simple mission.  Whether or not it is possible to make this particular vehicle work doesn't concern me, because it is without a doubt possible to make something very similar work.
 
The real point here is that vehicles with a similar set of capabilities to what this one is trying to achieve will likely begin appearing on battlefields within the next decade or so.  The ability to operate from totally unimproved locations with sufficient striking power to destroy a handful of enemy positions or vehicles is a big deal.
 
Imagine a small UAV armed a few small missiles that could be carried in the back of a small truck and launched with only minutes of notice.
 
Put one of these trucks/systems in a convoy and the commander would be able to send it up ahead to check out anything of interest at any point.  If attacked, he would have his own organic air-power available almost instantly. 
 
Basically imagine this:
 
h*tp://www.aurora.aero/TacticalSystems/GoldenEye80.aspx
 
With a few of these:
 
h*tp://www.lockheedmartin.com/products/DAGR/index.html
 
There is no reason such a UAV couldn't be launched from a moving truck, and quite possibly land on a moving truck.  The idea wouldn't be for the UAV to stay airborne all of the time.  Most of the time it would just be hitching a ride on the ground, when required however it would be available at a moment's notice.   Approaching a blind curve? or a village with a history of trouble?  See movment on the next ridge?  Send up the UAV for a quick look, at worst it will burn a couple liters of fuel.

 
 
 
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neiyold       7/25/2009 8:32:50 PM
Actually, that is about all that I am trying to say, that with an eye to development costs and system complexity, it appears to me that there ought to be an easier way to do this.  Even using a lift fan approach, which given the relative expected affordability of the F35 ought to become an easier and easier method of achieving VTOL.  Licensing cost may become an issue, but nothing that is insurmountable.
 
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FJV    OMG!   7/27/2009 12:27:37 PM
I have the haunting suspicion that the UAV has to flip over on the reverse side for  forward flight, because otherwise the air flow to the main engine would be disrupted/blocked.
 
This design is getting weirder and weirder and I do not mean this in a positive way.
 

 
 
 
 
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Herald12345    In case you haven't figured it out yet.   7/27/2009 1:07:41 PM




He nailed you on point on the tech and on your lack of technical competence to address this subject in those points.



Seems to me that you yell at those who zing you on point like that.




Get over that problem and address the TECHNICAL objections directly, that is if you can..




Herald




In case you haven't figured it out, you are being ignored. NO ONE, has nailed me on anything troll.

2 axis pitch roll instability. Still haven't explained your wazy out of that one.


-DA 


Most of US disagree with you and consider your arguments meritless and invalid as they are off point. Witness how many different people object to your assertions and demand you back your errant nonsense up, including me. Explain the 2 axis test failure seen and why you have nothing technbically valid to back up your.assertions.
 
Assertion of no errors on your part are not factual, Captain Perfect. You don't even asee the Dutch Roll defect inherent in the device?.(SARCASM)
 
Herald
 


 
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JFKY    Darth   7/27/2009 1:28:16 PM
Why is complex better than simple?  Why is it a good idea to adopt such a complex solution?  Really that seems to be the thrust of the critique of the sytem.
 
Keep
It
Simple
Stupid
 
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DarthAmerica       7/27/2009 2:11:38 PM

Why is complex better than simple?  Why is it a good idea to adopt such a complex solution?  Really that seems to be the thrust of the critique of the sytem.

 

Keep

It

Simple

Stupid

I didn't say its better. All I said is that not enough data exist in public to make the kind of assertions some are making. All we know is a rough idea of the requirement and key to that is VTOL. As to complexity. Thats relative. What would have been complex in the past may be trivial to modern FCS software. The flipping over and strange appearance have people in a fuss but those are not problems. I've got enough experience to know that this isn't really the time to pass judgement. I've also got enough experience in the field to know exactly how a UAS like this would benefit us. We really really could have used this UAS if it was operational. If you are at all familiar with cmbat logistics patrols in the GWOT then you know something like this would be a god send and save lives. So, if they get it to work and its flipping and twisting, fine. If they find a simpler method, fine. I'm not too wrapped up on the specific platform configuration. But as I said, I know for a fact that the FCS SW that exist today can easily handle this design and it is not an issue.

-DA 
 
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Herald12345    Toy don't have the experience.   7/27/2009 2:32:46 PM
Don't claim that you do.
 
You don't even understand the fault tree described to you in plain English about this concept.,

Herald
 
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JFKY    Rube Goldberg MAchines Worked   7/27/2009 2:44:46 PM
You know.  It's not that it won't WORK it's that it might be made to work easier, and therefore CHEAPER if done differently.......
 
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DarthAmerica       7/27/2009 2:48:12 PM

You know.  It's not that it won't WORK it's that it might be made to work easier, and therefore CHEAPER if done differently.......

Potentially but not necessarily. To say that we have to see final HW and the full requirement and if the HW demonstrates usefulness. I'm not questioning that other solutions exist though. There is a difference.

-DA 
 
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DarthAmerica       7/27/2009 3:00:29 PM

Don't claim that you do.

You don't even understand the fault tree described to you in plain English about this concept.,


Herald

Troll you wouldn't know the first thing about a fault tree. Why don't you stop worrying about me and just post what you have to say on the topic. You look like a fool. For all your delusions about how smart you are it's hilarious, and I really losing count, how many times a video or article appears demonstrating you are incompetent AT BEST. Did you not notice the video from Rufus? Did you not read the test plan goal was to demonstrate VTOL flight? Get a grip and stop wasting our time playing pretend and trolling me.

If you have a problem with the design, state why, and move on. Don't worry about what I know or don't know BECAUSE YOU DON'T KNOW. You can fool the kids and fanboys but not the rest of us who are actually involved in service and or engineering who know you are nothing more than an over qualified fanboy. You would be right at home with the APA/ELP ect. You didn't even know the definitions of UAV/UCAV
until I explained it to you.

h*tp://strategypage.com/militaryforums/6-56315.aspx 

 That should be your first clue to back off and listen a bit before inserting your foot in 
your mouth.

I'm getting a bit tired of everytime I take the time to post and share something I'm interested in with others, you jump in and start insulting and turning the thread into a flame war. Stop doing that. It's childish and immature and people don't log on to read us fight. How freakin hard is that? Notice of all the posters in here who do have issues and disagree for whatever reason you are the only one squealing like a stuck pig and behaving like an immature troll. Now this is my last time explaining to you that you need to get over your personal grievance if you wish to participate in threads I'm involved in. AGAIN GET OVER IT. Stick to the topic and leave DARTHAMERICA out of your mouth. You don't see me posting breathlessly behind you when people like BlueApple correct you on things like MICA or other topics where you have been obviously in error. This is because while I find you to be an utterly arrogant SOB, I actually am not obsessed with you and don't care about you or any other poster personally and I don't find it necessary to inflict myself on the forum with my personal issues except to keep repeating this warning to you to back off. TRY to interpret this like an adult and move on.

-DA 
 
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Herald12345    If you had looked at Rufis video yourself......   7/27/2009 3:18:47 PM
You would have seen a one axis control problem solved through the parabola trajectory  by a two fan linear lift and trajectory momentum solution. Your ignorance in trying to use that video of a simple one case solution as an example to prove your point about general hover flight control shows how appallingly ignorant about aircraft you actually are. The solutiion was highly specialized to the one specific problem described and cannot be generalized as a control solution from hover to horizontal flught into a bank and turn regime or to claim 2 axis control.
 
Do you realize who the stupid one revealed, here, is?
 
You are NOT qualified.
 
CREF above.
 
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DarthAmerica       7/27/2009 3:28:03 PM

You would have seen a one axis control problem solved through the parabola trajectory  by a two fan linear lift and trajectory momentum solution. Your ignorance in trying to use that video of a simple one case solution as an example to prove your point about general hover flight control shows how appallingly ignorant about aircraft you actually are. The solutiion was highly specialized to the one specific problem described and cannot be generalized as a control solution from hover to horizontal flught into a bank and turn regime or to claim 2 axis control.

Do you realize who the stupid one revealed, here, is?

You are NOT qualified.

CREF above.



Again, you can't help but behave like an absolute child. What the Rufus video shows Herald, and all it was meant to show IN THE CONTEXT OF THIS THREAD, is that the act of flipping the UAS over is not some insurmountable problem and that modern FCS can do it. That's it. Yet here you go again, calling people stupid and trolling on my nuts as usual and trying to obfuscate and move the goal post onto something else. I've stated many times in this thread that this UAS has much ore to demonstrate before an opinion one way or the other can be made. Do you get that? Can you read? Now, stop trolling because as I said. You are only special to fanboys. REAL PROFESSIONALS see you for what you are. I'll hold of on characterizing you because it's obvious. You could have simply said, you don't like it, why and left it at that. All this BS you keep shoveling is trolling. But keep it up. See what happens.

-DA 
 
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FJV    This is not personal.   7/27/2009 3:32:26 PM
For me this is not personal.
 
Something will work or it won't. Ego or being a nice guy will not change that. The laws of physics are indifferent to that kind of stuff. There is also a distict difference between real technical know-how and show bizz.

We have seen a lot of show bizz in this topic. Just for contrast, this is what real technical skills look like, even though it's concerning an old technology:
 
PS
Thou shalt not covet thy neighbor's spot welder.
 
 


 
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