Brakes

[Guest janpfs]

Hi all.Just wondered, how do you apply brakes in a real plane?I am building a b737 cockpit,and I know, the rudder pedals is used for differential braking, but how do I apply normal brakes, like the .command in FS? Should that be assigned to a button on the yoke, or do you press both pedals at the same time? For sure, pressing both F11 and F12 on the keyboard do not work. Does anyone know how it works in a real plane?Regards, Jan P.

[Guest GeorgeDorkofikis]

You just step on both brakes with the same pressure and adjust for any possible differences in pressure from either side.George DorkofikisAthens, Greecehttp://online.vatsimindicators.net/811520/1704.pnghttp://www.precisionmanuals.com/images/forum/betaimg.jpg

[Guest stevelep]

If the autobrake is disable and you brake manually you apply light pressure on both brakes and release and repeat.Avoid pressing more in one side it would cause a dangerous turn off the plane rolling. Avoid to hard pressure cause you can blocked the wheels and make flat on the tires ...differential brakes is use to make the turn on ground easierespecially if you've to turn very tight.May be heavy planes have ABS ? I don't knowBOB

[Guest GeorgeDorkofikis]

All modern airliners, actually even the earlier once like 727s have anti-block wheel systems but they are not called ABS.You will find them as 'anti-skid' and its function is the same. Not tolet any of the main landing gear wheels lock on slippery ground. There are no breaks on the nose gear.George DorkofikisAthens, Greecehttp://online.vatsimindicators.net/811520/1704.pnghttp://www.precisionmanuals.com/images/forum/betaimg.jpg

[Guest Dodiano]

OK On the A-320 this is how it is done, You have differential brake pressure just like in any normal plane, the TIP of the pedal acts as the brake, actually you have to apply constant pressure on both and do not let go cause it

[Guest f1yerian]

Hello allI have flown the rw 727 sim for 4 hours. What got me was the amount of pressure needed to engage the toe brakes. To get any slowing down my back was hard and I mean hard against the rear of the capt's seat - not like in a car or with any of the h/ware add ons!Oh and by the way - I blew out the the nose wheel tyres by turning of the r/way at too high a speed! There was no ground speed indicator on the version I flew, it was a matter of judgement.Ian

[Guest Tomlin]

Section 6.1 of the NG AOM recomends agains differential braking while turning the aircraft at slow speeds.Just 2cent worth!

[rickalty]

Three years ago I was in a 737 that actually buckled the nose strut doing just that. Landed waaaaaay too long, didn't want to go into the overrun and turned onto the last taxiway too fast. Both nose tyres blew, the rims went into the asphalt at an angle, and the locking struts failed. We left the plane through the regular door down a rolling stairway - didn't do the slides and emergncy thing - and went to the terminal in a bus. A few people complained of bad necks and backs after the jerk - This was America, after all :-)I guess that was probably a career ending landing for the skipper.Richard

[Guest monarch_161]

I dunno if it's clear from these posts, but you use "toe" brakes.If you keep your feet low down on the pedals, then when you push you are using rudder. Raise your feet slightly higher and push on the top of the pedal to pivot it forwards and you are braking. That way you can actually be braking and using rudder together if you really want to.I haven't flown anything bigger than a Piper Warrior in real life, so I didn't have autobrake and anti skid.

[tigert]

>Hello all>>I have flown the rw 727 sim for 4 hours. What got me was the>amount of pressure needed to engage the toe brakes. To get any>slowing down my back was hard and I mean hard against the rear>of the capt's seat - not like in a car or with any of the>h/ware add ons!Well, pretty much anything on an airliner is heavier, stronger and bigger than the wimpy add-ons from CH or such. Precision Flight Controls stuff gets a bit ahead, but at least their "desktop" yokes are very light and feel more like a small GA plane (which they are meant to be too of course) - havent tried the Airliner yoke myself.But basically, many of the things we do for our cockpit, if it is for an airliner, make it beefy. It's kind of silly to get nice panels and switches and build a cockpit shell for an airbus, then stick the nice molded FDS control stick in top of a regular joystick :) It's _stiff_ in real life. By having strong control forces and long control "travel" (movement of the yoke and pedals etc) you make it possible to fly more precisely, and it feels like you are flying a big plane of which the weight is measured in tons..Even GA planes need a lot of force if they are trimmed way off the desired attitude. You need both hands on a C152 if you trim it way back and want to fly the opposite way.>Oh and by the way - I blew out the the nose wheel tyres by>turning of the r/way at too high a speed! There was no ground>speed indicator on the version I flew, it was a matter of>judgement.Your airspeed indicator is your groundspeed indicator when your wheels are on the ground :)//Tuomas

[Guest f1yerian]

Hello TuomasThanks for your input. Yes of course the hardware we can buy is for "home use" and doesn't equate to the real thing. It was an extraordinately amount of pressure I had to apply on the brakes especially to get them to move through a type of gate to stop accidental use.The airspeed indicator is of no use at slow taxi speed it hardly registers at all.I use a PFC jet column yoke and pedals but like the look of the CH offering of their new pedals.Going back to the real sim (727) after a few touch and goes at Gatwick the instructor took me to Auckland? NZ with a shorter r/way for t/o and hills at the far end. After rotatatate (thats the term his airline uses)this kind person knocked out the port engine - very little assemetric shift with the engines being so close to each other. But I will always remember him saying " If you see something white and fluffy out of the window, they aint clouds theys sheep!"They do like their little jokes don't they!Best wishesIan