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bitcoin bastard posted:My plan to build an entire ballistic missile and then duct tape a Bluetooth enabled GPS unit to the front is foiled!
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# ? Oct 17, 2014 00:09 |
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# ? Apr 28, 2024 04:04 |
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azflyboy posted:The newer generation of GPS satellites were actually built and orbited without the hardware for selective availability, so the decision to disable it has been made effectively permanent. COCOM restrictions! Though, with the new availability of cheap SDR hardware, one could build a GPS receiver that ignored such limits if they so desired. (Anyone who would actually be building said missile would of course be able to design their own receiver, plus add additional guidance mechanisms such as star trackers because what kind of ballistic missile would depend on GPS?)
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# ? Oct 17, 2014 00:12 |
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vessbot posted:And you are right! The ailerons and flaps are all deflected up (i.e., the flaps are at a negative setting) which decreases the camber of the wing and lowers the CLmax. That means that if it flies through an upgust that takes it to the critical AOA, it will make less lift than it would otherwise and therefor make less stress. Early airbus 320s had something similar, called "load alleviation function" or LAF. They found it really didn't do anything but add complexity, so they deleted it from later models. You want clever, you want to see what the 787 does with its flaps for efficiency! Variably self adjusting for efficiency, with no crew input or control at all!
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# ? Oct 17, 2014 03:21 |
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movax posted:COCOM restrictions! Though, with the new availability of cheap SDR hardware, one could build a GPS receiver that ignored such limits if they so desired.
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# ? Oct 17, 2014 03:42 |
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An incredibly wholesome picture from the olden days of a Stratocruiser taxiing across an underpass in Queens, New York, March 1951.
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# ? Oct 17, 2014 04:13 |
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747 at O'hare doing the same
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# ? Oct 17, 2014 05:57 |
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Inacio posted:
How nice of the German Army to label where a ZSU should aim.
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# ? Oct 17, 2014 07:02 |
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Scratch Monkey posted:https://www.youtube.com/watch?v=q48Swb2ATww That was pretty awesome. Too bad he was only at 70,000ft for like a minute near the end, most of the in-flight footage seemed to be as he was around 40,000ft. It was neat watching the landing chase car streak onto the runway as it was approaching.
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# ? Oct 17, 2014 07:55 |
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evil_bunnY posted:You laugh but building a GPS guided missile with RC jets is actually trivially easy. I just wonder why we haven't heard of it being done. The parts are "quite literally" off the shelf. I could walk in to my local hobby shop, and walk out with the right stuff, and put a plane, heli, or quad anywhere, with tens of feet accuracy. Heck, you don't even need gps. :-) But that starts to get into things that are really dangerous.
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# ? Oct 17, 2014 14:44 |
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Nerobro posted:I just wonder why we haven't heard of it being done. The parts are "quite literally" off the shelf. I could walk in to my local hobby shop, and walk out with the right stuff, and put a plane, heli, or quad anywhere, with tens of feet accuracy. Good luck building something with a large enough payload capacity without using anything restricted.
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# ? Oct 17, 2014 14:54 |
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Nerobro posted:I just wonder why we haven't heard of it being done. The parts are "quite literally" off the shelf. I could walk in to my local hobby shop, and walk out with the right stuff, and put a plane, heli, or quad anywhere, with tens of feet accuracy. Payload is a problem, but RC-style drones as weapons or ISR tools aren't unheard of: http://www.cbsnews.com/news/fbi-man-in-connecticut-plotted-to-fly-drone-like-toy-planes-with-bombs-into-school/ http://www.latimes.com/world/worldnow/la-fg-wn-south-korea-drones-north-korea-20140404,0,4484004.story#axzz30PNwxUZf
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# ? Oct 17, 2014 15:00 |
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# ? Oct 17, 2014 15:06 |
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hobbesmaster posted:Literally any light aircraft can make that with ferry tanks. I swear I read a blog post about doing a transpacific ferry on in a single engine cessna but I only found a transatlantic one for that. You're probably thinking of this guy. Transpacific solo in a C172, took 75 hours including a 24 hour leg.
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# ? Oct 17, 2014 15:24 |
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Never saw the Pacific one e: This is probably the other one that you found: http://www.cessna150-152.com/transatlantic.htm Transatlantic, as the link suggests simplefish fucked around with this message at 15:51 on Oct 17, 2014 |
# ? Oct 17, 2014 15:47 |
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Oh, and don't forget which plane holds the continuous flight time record Before you look it up, have a guess at 1) how long it was up there, and 2) what it was (although that's rather obvious now from the context of discussion)
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# ? Oct 17, 2014 15:56 |
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Its been linked in the thread vaguely recently I think. Another hint: the plane is in McCarran
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# ? Oct 17, 2014 16:07 |
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Aerial refueling ain't got nothin' on that
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# ? Oct 17, 2014 16:21 |
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I posted it on the 11th July in this thread, thought it had been enough time for us to get new readers in who might not have seen it.
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# ? Oct 17, 2014 16:23 |
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evil_bunnY posted:You laugh but building a GPS guided missile with RC jets is actually trivially easy. Yeah but building something that can reach 60,000 ft or 1200mph is not. If you can build a missile that can do either/both of those, you probably have the resources to roll your own unrestricted GPS device or obtain one. azflyboy posted:The newer generation of GPS satellites were actually built and orbited without the hardware for selective availability, so the decision to disable it has been made effectively permanent.
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# ? Oct 17, 2014 16:38 |
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hobbesmaster posted:Good luck building something with a large enough payload capacity without using anything restricted. Define large enough? 1 pound? 2 pounds? 10 pounds? 20 pounds? 100 pounds? I can do all of the above with hobby shop, and at worst, hardware store materials. Flite Test on youtube flies some rather big stuff using extruded foam, and foamboard. Using "NO" engineering, just guessing at things, they flew a cider block.. That's 38 pounds. There's no reason an ardupilot couldn't have taken that to a destination and left a brick in someones driveway. They've also flown a turkey, a blender and the power system to run it, a toaster oven, and a microwave oven. :-) They're doing that without any real planning. Their airfoils are jokes, their spar designs are just as laughable. And their idea of control surfaces are.. not good. But the planes work. mlmp08 posted:Payload is a problem, but RC-style drones as weapons or ISR tools aren't unheard of: I can't say I'm glad you found those articles, but they don't surprise me much. I fear what that might do to RC regulation. :-( Nerobro fucked around with this message at 16:55 on Oct 17, 2014 |
# ? Oct 17, 2014 16:51 |
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bitcoin bastard posted:Yeah but building something that can reach 60,000 ft or 1200mph is not. If you can build a missile that can do either/both of those, you probably have the resources to roll your own unrestricted GPS device or obtain one. Another sad thing about Concorde being cancelled, you can't take your GPS aboard and watch its cruise performance trigger the ballistic missile fail safe. A 737 doesn't come near, but still fun to be able to monitor that stuff from ones own device. I don't think that performance limit is much help against terrorists though. If you don't want to martyr yourself, applying amateur drone / POV remote control to a GA aircraft with a few hundred lbs of usable load probably isn't too hard.
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# ? Oct 17, 2014 17:00 |
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Turkey shoot anyone? 'Tis the season, is it not? http://www.abc.net.au/news/2014-10-17/islamic-state-militants-said-to-be-training-to-fly-captured-jets/5823464 quote:Former Iraqi pilots who have now joined Islamic State (IS) militants in Syria are training members of the group to fly captured fighter jets, a group monitoring the war said on Friday.
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# ? Oct 17, 2014 17:42 |
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drunkill posted:Turkey shoot anyone? 'Tis the season, is it not? "Surely, our four fighter won't literally get blasted as soon as they are in the air without proper IFF codes" I mean, c'mon now. Four fighters? Do they KNOW how many coalition and US combat aircraft are roving around there?
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# ? Oct 17, 2014 17:45 |
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drunkill posted:Turkey shoot anyone? 'Tis the season, is it not? CENTCOM is publicly stating that them taking to the air is bullshit.
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# ? Oct 17, 2014 17:48 |
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mlmp08 posted:CENTCOM is publicly stating that them taking to the air is bullshit. I'm sure they could do pattern work low enough to not show up on radar.
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# ? Oct 17, 2014 18:32 |
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I'm sure they're pretty easy to see from orbit and easy to hit from 40k.
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# ? Oct 17, 2014 18:36 |
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Ola posted:I'm sure they're pretty easy to see from orbit and easy to hit from 40k. Satellites don't provide 24/7 coverage over an area. Now U-2s and global hawks....
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# ? Oct 17, 2014 18:37 |
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hobbesmaster posted:I'm sure they could do pattern work low enough to not show up on radar. AWACS and JSTARS are hanging around. Between them, fighters already in the air, and drones hanging around, there is no place to hide.
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# ? Oct 17, 2014 18:50 |
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simplefish posted:Oh, and don't forget which plane holds the continuous flight time record How many times did they poo poo at Mach 0.16?
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# ? Oct 17, 2014 18:55 |
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CommieGIR posted:AWACS and JSTARS are hanging around. Between them, fighters already in the air, and drones hanging around, there is no place to hide. I was more joking about them getting maybe 100 ft off the ground to make sure the thing worked before planning whatever suicide mission they're going to do.
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# ? Oct 17, 2014 19:02 |
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We'll know ISIS is flying aircraft when all the F-15s get sabotaged by an insider threat to ensure a raptor gets the kill or vice versa.
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# ? Oct 17, 2014 19:06 |
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mlmp08 posted:CENTCOM is publicly stating that them taking to the air is bullshit. More like CENTCOM is spreading disinformation so that none of our coalition members steals the only three air-to-air kills of the entire campaign
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# ? Oct 17, 2014 19:07 |
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simplefish posted:Oh, and don't forget which plane holds the continuous flight time record Cessna 172, with one door replaced with a roll up door. IIRC, it was 72 days.
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# ? Oct 17, 2014 19:22 |
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CommieGIR posted:"Surely, our four fighter won't literally get blasted as soon as they are in the air without proper IFF codes" Eh, it's pretty sweet propaganda though. You know there are some retards who are going to panic about evil browns now having fighter jets. Secretly though, I'm sure there are war-boners raging right now to have a F-22 around to club those jets out of the sky as soon as possible.
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# ? Oct 17, 2014 19:24 |
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What they don't have is 4 credible air-to-air threats. What they do have are 4 green cards in the bank if they all take a plane and defect.
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# ? Oct 17, 2014 20:06 |
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drunkill posted:Turkey shoot anyone? 'Tis the season, is it not? Didn't they deploy F-22s in Syria? I wonder how many ISS-piloted MiG-22s a single F-22 can take out before he gets bored and goes home. movax posted:Eh, it's pretty sweet propaganda though. You know there are some retards who are going to panic about evil browns now having fighter jets. I'm a brazilian anti-violence borderline buddhist monk person and poo poo I would love to see that. The IS is loving ridiculous and should seriously be eradicated. I know a lot of muslims and the fact that they call that Islam is shameful. But mostly I just want to see F-22s blow evil planes up. marumaru fucked around with this message at 20:23 on Oct 17, 2014 |
# ? Oct 17, 2014 20:21 |
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Inacio posted:Didn't they deploy F-22s in Syria? I wonder how many ISS-piloted MiG-22s a single F-22 can take out before he gets bored and goes home. Dunno, how many rounds is in the load out for the gun? Any ballpark numbers on how many rounds per kill? I'd guess it's low since they'd never know it was there.
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# ? Oct 17, 2014 21:24 |
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Inacio posted:Didn't they deploy F-22s in Syria? I wonder how many ISS-piloted MiG-22s a single F-22 can take out before he gets bored and goes home. Well the F-22 can carry 8 missiles... edit: Re guns, F-22 apparently still uses the ancient M61 with 400 rounds and vietnam was about 200 rounds per kill from what I can find. hobbesmaster fucked around with this message at 21:31 on Oct 17, 2014 |
# ? Oct 17, 2014 21:26 |
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Ogrel72 posted:
Bridges are cool! When I flew into Leipzig we didn't taxi over the bridge
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# ? Oct 17, 2014 21:51 |
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# ? Apr 28, 2024 04:04 |
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e; this isn't the chat thread...
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# ? Oct 18, 2014 00:21 |