Simviation Forums

I been watching many videos from real airplanes "tubes" most of them and I see how the speedbrakes lever moves by itself at the touchdown moment in autobrake mode ,I wonder why this doesn't work in any of the MSFS series

This can be done by making a gauge and add two lines in panel.cfg ,I presume must be already done by someone ,if its not please let me know



Alex

You mean speedbreak? The pilot sets the setting for the auto break before landing from 1,2,3, and MAX. the RTO setting is only for takeoff. The pilot would arm the speedbreak before landing along with the Autobreak setting. They are two separate systems, but both deploy at the same time.

Yes speedbrakes ( thanks I edit & fix that) to arm and disarm the speedbrake would be more complicated ,I mean that it should deploy once the wheel touch the ground , once the autobrake its set in1 ,2 or 3 (I don't know what the RTO does)

this has to be already there, unless this doesn't work the way I think like that, but there are so many videos doing that

I'm thinking that a gauge could also cause a conflict along with the modeldef.xml part that does the wheel brake effect..but there has to be a easy way


alex

BlackAce wrote:You mean speedbreak? The pilot sets the setting for the auto break before landing from 1,2,3, and MAX. the RTO setting is only for takeoff. The pilot would arm the speedbreak before landing along with the Autobreak setting. They are two separate systems, but both deploy at the same time.

Like Alex...I have always referred to it as the "Speed Brake"....used as a "Brake" to slow the aircraft down quickly by diverting the exhaust gas forward, and therefore assisting the normal Wheel Brakes in slowing the aircraft down?

Paul....Breaking the Brakes.... ...!

alrot wrote:Yes speedbrakes ( thanks I edit & fix that) to arm and disarm the speedbrake would be more complicated ,I mean that it should deploy once the wheel touch the ground , once the autobrake its set in1 ,2 or 3 (I don't know what the RTO does)

this has to be already there, unless this doesn't work the way I think like that, but there are so many videos doing that

I'm thinking that a gauge could also cause a conflict along with the modeldef.xml part that does the wheel brake effect..but there has to be a easy way


alex

To arm the Speed Break press Shift+/ but both wheels main have to be on the ground for them to deploy. RTO is Rejected Take Off, if the aircraft has to stop during takeoff so they are on Max+ Setting.

Hi,

On the ground:
Check external view that the spoilers (not speedbrakes sorry but I'm a glider pilot ) are not deployed, go back to virtual cockpit view if available,
look at the throttle quadrant, usually left hand lever that moves in an arc.

It should be fully forward, press the / key and it should go fully back, press / again and it should return fully forward.
If your not sure depending on your panel whether spoiler is armed or not, while still looking at the lever, press SHIFT + / as mentioned above,
you should see the lever move maybe a 1/6th of the way along it's possible movement, that way you can always tell whether it's armed or not.

It's deployment is controlled as to whether the full weight of the aircraft is felt on the undercarriage, once full weight is seen, it will deploy,
it should retract with a quick 'blip' on the throttle at around 80 knots.

regards

Steve

Just pointing out, there are Three separate systems for slowing an aircraft after touchdown, each one works independently of the others. 1, Brakes Auto or manual. 2, Spoilers AKA Speedbrakes or Airbrakes. 3 Reverse Thrust provided via the engines. All three are available to pilots and are selected as required. They are designed to work together but can be used individually incase of a failure in one or more of the other systems.

I didn't even notice there was a command key Spoiler (arm) in the game, in my case the instalation didn't assing any key ,i assined the one you told me "ctrl+/ " and yes now its working

I thought by the time I start to watch many interesting videos on youtube that this supposed to work in autobrake but I didn't realize we have to arm the spoilers first ,just like in real life

thanks a lot gentelmen

Alex

Ok this is a little confusing. True Speed Brakes are usually on military jets and not on commercial airliners they have spoilers there is a difference between the two.
Auto Brakes have nothing to do with either system at all.
So exactly what are you talking about these are three different systems.
Auto Brakes apply aircraft brakes once the mains are on the ground and that is all.
Spoilers are armed just before landing by pressing the / key unless you have changed the default assignment. There main function is to cause the wing to loose lift. I have seen them being used while flying through a storm to help stabilize the wing so the plane does not bounce to much but that is a rare occasion
Speed Brakes as I stated are usually found on military jets and are usually on the fuselage they are used to slow the plane down but do not cause the wing to loose lift.

http://library.avsim.net/download.php?DLID=82736

You mean something like this?

Or this?

http://simviation.com/1/download?file=armspoil.zip&fileId=29203

Look up Auto Spoiler here on Simviation, under FS Guages, pg 13

I would have added it to my previous post but it won't let me edit it for some reason. Not just trying to jack up the post count, I swear! Often....

Spoilers are armed just before landing by pressing the / key

Actually, barring Assignment Changes, the ARM command is "SHFT+/" not just /. Just "/" (no quotes) actually deploys the SPOILERS or speedbrakes, unless otherwise assigned. I use the trigger on my joystick for the actual speedbrake, and keep the / for the spoilers, since I don't actually shoot at a whole lot in FS9
Not trying to nit-pick, just want to avaoid the usual mass confusion *I* suffer from!
Have fun all!

Pat~

Hi,

The autobrakes only act on wheels when landing (touch down) and all gauges I know don't activate the spoilers.

The spoilers can be automatically activated if you have a gauge "Spoilers armed". This gauge is not present on all aircrafts. If it exists, the spoilers are set to full when the aircraft touches down.

Cheers

garymbuska wrote:Ok this is a little confusing. True Speed Brakes are usually on military jets and not on commercial airliners they have spoilers there is a difference between the two.
Auto Brakes have nothing to do with either system at all.
So exactly what are you talking about these are three different systems.
Auto Brakes apply aircraft brakes once the mains are on the ground and that is all.
Spoilers are armed just before landing by pressing the / key unless you have changed the default assignment. There main function is to cause the wing to loose lift. I have seen them being used while flying through a storm to help stabilize the wing so the plane does not bounce to much but that is a rare occasion
Speed Brakes as I stated are usually found on military jets and are usually on the fuselage they are used to slow the plane down but do not cause the wing to loose lift.

Well done, Garry!.... ...!

That's about the best description of the three different types of aircraft braking!

"Speed Brakes" on the fuselage of military jets (F86?) always reminds me of the practice of putting ones hand out of the car window, palm facing forward, to experience the air pressure effect against the forward motion of the vehicle!

(No chance of me stopping the car by that method, tho'!)... ...!

Paul....Breaking wind.... ...!

this is getting even more confusing

I just "Arm" the spoilers (not deploy) set the Autobrake in "2" and both wheel brakes and spoilers deploy after touchdown ,I said before that I was about to build a gauge that once the autobrake is set it will also deploy the spoilers on ground ,that was because I didn't see that there was the feature "Spoiler (Arm) " in the FSX game ,

So there wasn't a need of a gauge since the begining of this thread ...am I getting understood? Capiche, me entendieron


Gary ,I don't know how thing works out today in aviation but I remember when I was 15 in some of my visit to USA the drasticly reduce of the speed in the air in aproach (felt like the airplane has tires in the air and someone where pressing the brakes) in 747s, I assume those where the spoilers ,so I think in my humble opinion airbrakes has to exist in "tubes" comercial airplanes, or maybe I'm wrong today I haven't been on a plane in 35 years

Alex

The apoilers don't really slow the craft much, they cause a loss of lift on the wings, increasing sink rate. the slowing is normally done with the reduction of engine thrust, and, if necessary, they can use the reversers on the inner two engines to REALLY slow down, like during a very rapid descent to prevent overspeed. there really aren't any "speed brakes" on modern passenger jets, per se. Just spiloers, flaps and slats, the the drag of 2-4 REALLY big pods hagging off the wings (engines). Unless those things are pushing forward, they can provide a LOT of drag effect to help slow things down, and, once again, they all have reversers!