Don't try it around DCA. The "voice from above on 121.5" , AKA the AWACS, will definitely have you if they're up and looking. I *cough* know of someone that tormented the AWACS guys by driving a car down the runway at College Park airport when it was closed and they'd send someone to see who took off or landed LOL.
Even more like the Sky Arrow. The Sky Arrow is carbon fiber/epoxy including the prop, so it is fairly stealthy as rental planes go*. It can be flown by sitting in it and it has been made in a drone version used as a FLIR observation platform.
*the metal engine would still show up to some extent, but the RCS is more like a big fat goose than a metal airplane.
Actually the choices for airplanes are:
Wet lead-acid (what I bought last time because it's cheap)
AGM lead-acid. (similar to gels, but much more voltage tolerant)
NiCads (hate them - thermal runaway issues of their own, but at least you can turn them off and they quit)
From what I could tell from my pilot buddies it goes like this. AC BUS > BATTERY CHARGER > BATTERY. So........the battery charger is the thing to blame here. Smaller airplanes are like cars where an alternator or starter-generator is voltage regulated to 14 or 28 volts and the battery is charged from that with no additional controls. The AC bus can be powered from the engines and/or the APU.
Ahh - not sure how to put this - but I have bought lead acid batteries for airplanes and it wasn't THAT long ago. Concorde makes a whole line of AGM lead acids to replace NiCads in various sizes including what Boeing uses.
I once tried to put out a burning SOLAS flare and no amount of throwing crap on it would work. It was kind of embarrassing so I threw it over the side and then the fkn thing is burning UNDERWATER and producing all kinds of smoke and steam PLUS lighting the water up bright red. No.....nothing going on here......oops...
The 787 is vastly more complicated than that. It does NOT float the batteries across a 28 volt bus like a car or small/medium sized aircraft. (well 14 volts for most cars..........) The generators on the engines and APU are about 230 volts AC IIRC and the batteries charge with a literal battery charger driven by the AC buses.
The batteries are for exactly what they are for in your car - unless you plan to leave the plane running 24/7/365 - you need a way to start it;)
Besides for that, running the generators with no battery makes for noisy power and poor voltage regulation.
Besides for that, if the generators (APU and main engine) all die, you need a backup source of power.
*SOULS*. A radio call from an airplane is "souls onboard" because if they ask for people the pilot will frequently not count himself and the rest of the crew.
Don't forget DSC - that will go tits-up too. Can you imagine AIS with a bunch of spoofed GPS positions? OMFG that would be bad in a crowded area:( Likewise spoofed ADS-B.
BTW - I heard a Mayday call go out because the *backlight* on a GPS died and the skipper could not find his way home after dark. It was a clear night and he was anchored NEXT TO A LIGHTHOUSE and he was LOST ANYWAY!
I actually found Bermuda that way. I ran a latitude line east until the radio beacon on the north end of the island bore due south. I have no idea how many of those old time radio beacons are left and it is a major PITA getting around that way compared to GPS.
IIRC, the original reason they hated the U2 flights was they were afraid we would find out what they DIDN'T have.
I also met a Soviet Air Force colonel that was irate at Gorbachev slacking off on the cold war. He was quite honest - he said a fake war without actual combat was the best thing ever for the USSR *and* USA mil-industrial complex.
Iraq did a lot of "- Letting the other think you have more than you had. That makes them worry without you having to spend too much." and it ended poorly for them, Just sayin..
"Why spend time building something up when some capricious law is just going to tear it down or otherwise gimp it? "
Isn't that pretty much all of human history except when you are either in the good graces of an unelected monarch/dictator or living someplace with no effective government?
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Because they all got jobs in space?
So it will be exactly like their aviation program is now!
I so wish I could mod that up!
If both the Cessna AND the F-22 were at their maximum altitudes maybe, unless there is a new radar that shoots through solid earth and out again.
Don't try it around DCA. The "voice from above on 121.5" , AKA the AWACS, will definitely have you if they're up and looking. I *cough* know of someone that tormented the AWACS guys by driving a car down the runway at College Park airport when it was closed and they'd send someone to see who took off or landed LOL.
Even more like the Sky Arrow. The Sky Arrow is carbon fiber/epoxy including the prop, so it is fairly stealthy as rental planes go*. It can be flown by sitting in it and it has been made in a drone version used as a FLIR observation platform. *the metal engine would still show up to some extent, but the RCS is more like a big fat goose than a metal airplane.
ROFLMAO. Yeah - that is pretty much standard Garmin and Dynon stuff. Actually looks a little like an airplane I fly: http://www.generalaviationnews.com/wp-content/uploads/2012/07/New-Sky-Arrow-Sport-LSA-at-Oshkosh-2012_cockpit..jpg
Gliders ARE airplanes and carbon-fiber/epoxy is not the only composite. http://en.wikipedia.org/wiki/Windecker_Eagle Prior art LOL
Windeker Eagle in the late 60s was fiberglass. The WW II Mosquito was laminated wood.
Actually the choices for airplanes are: Wet lead-acid (what I bought last time because it's cheap) AGM lead-acid. (similar to gels, but much more voltage tolerant) NiCads (hate them - thermal runaway issues of their own, but at least you can turn them off and they quit)
From what I could tell from my pilot buddies it goes like this. AC BUS > BATTERY CHARGER > BATTERY. So........the battery charger is the thing to blame here. Smaller airplanes are like cars where an alternator or starter-generator is voltage regulated to 14 or 28 volts and the battery is charged from that with no additional controls. The AC bus can be powered from the engines and/or the APU.
Ahh - not sure how to put this - but I have bought lead acid batteries for airplanes and it wasn't THAT long ago. Concorde makes a whole line of AGM lead acids to replace NiCads in various sizes including what Boeing uses.
I once tried to put out a burning SOLAS flare and no amount of throwing crap on it would work. It was kind of embarrassing so I threw it over the side and then the fkn thing is burning UNDERWATER and producing all kinds of smoke and steam PLUS lighting the water up bright red. No.....nothing going on here......oops...
The 787 is vastly more complicated than that. It does NOT float the batteries across a 28 volt bus like a car or small/medium sized aircraft. (well 14 volts for most cars..........) The generators on the engines and APU are about 230 volts AC IIRC and the batteries charge with a literal battery charger driven by the AC buses.
The batteries are for exactly what they are for in your car - unless you plan to leave the plane running 24/7/365 - you need a way to start it ;)
Besides for that, running the generators with no battery makes for noisy power and poor voltage regulation.
Besides for that, if the generators (APU and main engine) all die, you need a backup source of power.
You are on a LOT of drugs if you think there are "dozens" of sat-nav systems.
*SOULS*. A radio call from an airplane is "souls onboard" because if they ask for people the pilot will frequently not count himself and the rest of the crew.
Don't forget DSC - that will go tits-up too. Can you imagine AIS with a bunch of spoofed GPS positions? OMFG that would be bad in a crowded area :( Likewise spoofed ADS-B.
BTW - I heard a Mayday call go out because the *backlight* on a GPS died and the skipper could not find his way home after dark. It was a clear night and he was anchored NEXT TO A LIGHTHOUSE and he was LOST ANYWAY!
I actually found Bermuda that way. I ran a latitude line east until the radio beacon on the north end of the island bore due south. I have no idea how many of those old time radio beacons are left and it is a major PITA getting around that way compared to GPS.
True - but they are being shut down 1 by 1 as they fail. My old route I had memorized to get around DCA used a radial from a VOR that is now dead :(
IIRC, the original reason they hated the U2 flights was they were afraid we would find out what they DIDN'T have. I also met a Soviet Air Force colonel that was irate at Gorbachev slacking off on the cold war. He was quite honest - he said a fake war without actual combat was the best thing ever for the USSR *and* USA mil-industrial complex.
They also may not have cared if miners and hatters died. Plenty more where they came from.
Iraq did a lot of "- Letting the other think you have more than you had. That makes them worry without you having to spend too much." and it ended poorly for them, Just sayin..
"Why spend time building something up when some capricious law is just going to tear it down or otherwise gimp it? " Isn't that pretty much all of human history except when you are either in the good graces of an unelected monarch/dictator or living someplace with no effective government?
Until I pass a law next week that says "all previous restraints are void" !