F16 Brakes at 4 35
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it’s jsut a bug
From non-carrier videos on youtube it seems that arresting systems are for AoA=0. If that is the case, one reason for requiring AoA=0 could be not to slam the front wheels down hard, which might happen for AoA>0. Navy gear might be robust enough for that, but maybe F-16 is more delicate. On the other hand, the non-carrier arresting systems seem to stop the aircraft over a longer distance than the carrier deck equivalent making for a softer braking effect.
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In the -1 it mentions in chapter 3.8.7 to land >500ft before the arresting system to ensure the NWS is down. I took it as must as the geometry of the hook on the plane might be just like that (you may need a “levelled” plane for the hook to catch the wire). Can someone confirm pls?
On which airbase (?) do you have issues (and which arrestor cable) ?
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On which airbase (?) do you have issues (and which arrestor cable) ?
I dont have any issues (atm). Just pointed out how it was mentioned in the -1 and that subjectively based on that info put my NWS down before reaching the cable. for the moment, all good and it worked out. Mav anyway pointed out that the bevaviour mentioned before seems to be a bug. all good.
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OK. Thanks!
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Hello!
Just to share opinons…
Don’t you think that F16 brakes are now very underpowered?
If I maintain the nose up for aerodynamic braking at high speeds, when the nose is lowered there is still too much energy and the brakes are not enough. On the other hand, if I lower the nose too soon, the brakes have to do a lot of work at full pressure to have the aircraft stopped at the end.
Our formation landings have became very difficult at the roll out energy management. I am testing the possibility of braking while the nose is still up, but it is hard without a pedal device to regulate the pressure.
Looking forward to hearing your opinion on this.
try switching off ANTI-SKID while landing…
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try switching off ANTI-SKID while landing…
Anti skid will remain active even with anti skid off, unless you switch to brake channel 2
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@Red:
Question:
In your car: is the brake distance longer or shorter with your ABS active?
Depends on driver. Poor driver hit pedal to the metal and ABS goes active which gives shorter braking distance to him. Good driver press pedal so that ABS not go active and and usually he get even shorter braking distance than poor driver with ABS activated.
Now taking this to airplanes, I really want to see pro pilot landing on icy runway on night where his other back tire hits on ice and other back tire on tarmac where ice is melted away by earlier landings without antiskid.Why we even talk about braking distances with ABS/antiskid? Whole idea of those is not to make braking distance shorter but keep car/plane controllable and brake at same time.
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@M79:
Depends on driver. Poor driver hit pedal to the metal and ABS goes active which gives shorter braking distance to him. Good driver press pedal so that ABS not go active and and usually he get even shorter braking distance than poor driver with ABS activated.
Show me. Its an urban myth, particularly in the case of prepared runways.
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Show me. Its an urban myth, particularly in the case of prepared runways.
Here is prepared runways for you:
https://fi.wikipedia.org/wiki/Tampere-Pirkkalan_lentoasema#/media/Tiedosto:Airfield_control_tower_at_tampere-pirkkala_airport.jpgSorry this is in finnish but braking powers ABS versus non abs on page 30:
https://www.theseus.fi/bitstream/handle/10024/41000/OpinnaytetyoABS.pdf;jsessionid=F212F4DD87CD6F617BF111895ED66CD7?sequence=1 -
Race car drivers don’t like abs on cars as it shakes the car and upsets balance. It’s different for planes as I doubt anyone is trailbraking into the corner on a tricycle. Sure you might be able to outbrake abs once or twice with luck or skill but I there really is no good reason to turn antiskid off on a plane, except when it’s defective and the hydraulics are screwed, or so I’ve told.
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Race car drivers don’t like abs on cars as it shakes the car and upsets balance. It’s different for planes as I doubt anyone is trailbraking into the corner on a tricycle. Sure you might be able to outbrake abs once or twice with luck or skill but I there really is no good reason to turn antiskid off on a plane, except when it’s defective and the hydraulics are screwed, or so I’ve told.
I cant’t find no reason to swithch ABS off either. If you brake right ABS just dont activate.
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I might be way out of my element in responding as my only experience is in various airliners and other jets but one very big no-no for any pilot is to land with anti-skid off unless directed to do so by a QRH. I dont know anything about light single engine jet aircraft but I cant imagine the logic doesnt transfer almost exactly.
the CRJ I flew and A321 that I am current on make it quite clear that with Anti Skid off, we could expect to overrun the runway, thus limiting our landings to nothing but extremely long runways and even then, expect to lose a tire or two. Anti-skid is indeed that important.anyway, with that grenade that i tossed, i will walk away and make some popcorn.
cheers!
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A change (I think) I notice while braking is that the toe brakes disengage when I apply rudder. I dont have fancy pedals, just a stick with twist axis.
It seems plausibly realistic that you couldn’t apply toe-brakes while also applying rudder…?
But I wonder if folks have a small or zero deadzone on their rudder axis, if thats maybe interfering with braking?
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@M79:
I cant’t find no reason to swithch ABS off either. If you brake right ABS just dont activate.
Hi, M79, well, for what it’s worth, I can tell you with fair certainty that it’s not used on Carriers.
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Hi, M79, well, for what it’s worth, I can tell you with fair certainty that it’s not used on Carriers.
Antiskid system should just be bit better than normal on carrier landings.
https://theaviationist.com/2014/07/16/c-130-land-on-carrier/ -
@M79:
Sorry this is in finnish but braking powers ABS versus non abs on page 30:
https://www.theseus.fi/bitstream/handle/10024/41000/OpinnaytetyoABS.pdf;jsessionid=F212F4DD87CD6F617BF111895ED66CD7?sequence=1Where on page 30 exactly? Page 30 of the pdf (labelled page 25 in the document page) discusses the importance of early braking effectiveness in minimising braking distance, but does not compare ABS with non-ABS. Page 30 of the document (labelled page 35 in the pdf) discusses how more modern ABS units have better braking performance compared to older ABS units, but does not compare ABS with non-ABS, either.
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@M79:
Antiskid system should just be bit better than normal on carrier landings.
https://theaviationist.com/2014/07/16/c-130-land-on-carrier/Why would you be using your brakes during a carrier landing? You either catch the wire and stop or bolter and keep going, not much in between, at no point should you be on the brakes.
The C130 you linked to is a very unusual situation.
ABS/Anti-Skid is off when on the boat, most of the systems don’t work at the slow taxi speeds anyway.
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Hi
Here is what I found from my A320 training manual about Anti-skid.Sent from my iPhone using Tapatalk
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Where on page 30 exactly? Page 30 of the pdf (labelled page 25 in the document page) discusses the importance of early braking effectiveness in minimising braking distance, but does not compare ABS with non-ABS. Page 30 of the document (labelled page 35 in the pdf) discusses how more modern ABS units have better braking performance compared to older ABS units, but does not compare ABS with non-ABS, either.
Sorry for kinda bad answer to your question, i mean this page 30 on file:
Rest of document just clarifies that even with newER systems there is gap between perfect braking and braking with abs. -