parking brake vs. emergency brake...

Sometimes when running out of runway on landing I pull the emergency brake to help slow/stop the plane. Does the parking brake and emergency brake offer the same degree of braking?

Thank you.

The emergency brake handle will command the brakes to become powered by the brake accumulator backed up by the APU accumulator, the brake accumulator is afaik the thing that the parking brake is powered by.

Pulling the Emergency brake handle whilst you still have normal brake pressure will cause the antiskid to become deactivated regardless.

So bottom line is yes the Emergency and Parking brake probably have the same effectiveness, but using them as a supplement to standard braking is ineffective and because of the deactivating antiskid, will likely increase the stopping distance.

Edit: To add to the above, if you are at the correct landing weight and use the airbrake as well as correct braking technique you can stop the hornet well within 6000ft, which is long enough for pretty much every runway in DCS with a few exceptions.

Referring to the one off landings not the standard when additional braking is needed...thanks.

I could be wrong but I believe they are the same brake referee to parking brake when it is pulled and turned and locked into the parking position if you just pull it out it an emergency brake don’t forget the toe brakes on the pedals

Did some tests...adding emerg. brake or hand brake to regular braking adds nothing to decreasing the stopping distance of regular brakes alone.

Did some tests...adding emerg. brake or hand brake to regular braking adds nothing to decreasing the stopping distance of regular brakes alone.

Since the emergency/parking brake disables the anti-skid, stopping distance should increase.

Normal manual braking with the anti-skid on IRL results in the shortest possible stopping distance.

In the DCS F/A-18, apart from the different tire marks and the noticeable reduced directional stability, there's no difference in stopping distance between anti-skid on and off.

If you run out of runway, just drop the hook and take the barrier (call tower and have them raise the cable) and if you need additional braking power, turn off anti-skid...but be ready for a popped tire from overheat of the brake pads on the wheels.

I could be wrong but I believe they are the same brake referee to parking brake when it is pulled and turned and locked into the parking position if you just pull it out it an emergency brake don’t forget the toe brakes on the pedals

That works in the real world F-15C!

Thanks gents...I like the idea of dropping the hook and grabbing the barrier LOL.

Just finished flying an hour over the PG 17:30/winter/cloudy, absolutely beautiful, lots of new ground objects to check out!

...if you need additional braking power, turn off anti-skid...but be ready for a popped tire from overheat of the brake pads on the wheels.

Doesn't make sense since the wheels will lock up if you apply more brake pressure than with the anti-skid on, hence the brakes will heat up less.

If you apply less brake pressure, the stopping distance will increase and brake temps will be lower as well.

Saying that anti skid on produces the minimum stopping distance assumes that it is correctly set and that cant be assumed with so much else badly setup within the sim/module.

Having said that, controlling the aircraft without it is likely disaster.

If you hit soft soil and drop the hook aren’t you a farmer plowing at that point ?

Are you pulling the stick all the way back after you drop to 100 or so?

Are you pulling the stick all the way back after you drop to 100 or so?

No, however I do raise the speed brake upon WoW.

I realize this is an old thread, but FYI, having anti-skid does not decrease stopping distance.  The purpose of anti-skid is to maintain control of the craft while it stops, not actually "brake better."

Just Google "does anti-lock decrease braking distance" and you'll find plenty of reading material.

It depends on the ABS system. A good ABS will always stop quicker than non-ABS.

If you are old enough and grew up in a climate which regularly has snow and ice in winter, you learned to pump you brakes when it's slippery. If you lock your brakes, not only can you no longer steer, if your tires are only skidding on--be it snow, ice, wet pavement, mud, leaves, whatever-- on, they have less stopping power, than if you are pumping them, ie press-release-press-release-press-release.

So if ABS only does press-release, but automatically, how can it stop quicker? Because it uses sensors to tell when the wheels are about to lock up, and lessens the brakes power, before asserting them again. It does this many times per second.

Not only would it be the rare human who might be able to pump the brakes that quickly, humans do not have sensors telling him/her that the wheels are about to lock-up, to know to let up on them.

I'm going to go out on a limb here and conjecture the Navy doesn't buy crappy ABS for the Hornet.

10 hours ago, Captain Orso said:

It depends on the ABS system. A good ABS will always stop quicker than non-ABS.

If you are old enough and grew up in a climate which regularly has snow and ice in winter, you learned to pump you brakes when it's slippery. If you lock your brakes, not only can you no longer steer, if your tires are only skidding on--be it snow, ice, wet pavement, mud, leaves, whatever-- on, they have less stopping power, than if you are pumping them, ie press-release-press-release-press-release.

So if ABS only does press-release, but automatically, how can it stop quicker? Because it uses sensors to tell when the wheels are about to lock up, and lessens the brakes power, before asserting them again. It does this many times per second.

Not only would it be the rare human who might be able to pump the brakes that quickly, humans do not have sensors telling him/her that the wheels are about to lock-up, to know to let up on them.

I'm going to go out on a limb here and conjecture the Navy doesn't buy crappy ABS for the Hornet.

And in an aircraft context then no ABS is going to mean a locked wheel at landing speed is going to be a wrecked tyre from flat-spotting or possibly an exploded one.

Yeah, but you never land with brakes on. The stress tires endure simply by touching down at over 100 knts , while the wheels are not rotating, is enormous.

At one time they tried making the wheels turn at least closer to landing speed for touchdown (I think it was just for airliners, but larger aircraft anyway), but the weight and cost of motorizing all the wheels was considered to high compared to developing tires that can take the strain, and replacing them often.

As someone who popped a tire after landing (and had the full experience of emergency services rolling out, runway and taxiway being closed for debris investigation [KSJC, 30L, 2016]), I can tell you that I will never-ever doubt that locking the wheels with excessive braking is a myth