Question for 737 NG Drivers

[airplane wizard]

Apparently the Space Shuttle only needs around 9000' as well. Granted they don't land it in the rain and some distances were longer.


STS-1

April 14, 1981, 10:20:57 a.m. PST, Runway 23, Edwards Air Force Base, Calif. Rollout distance: 8,993 feet. Rollout time: 60 seconds. Landing Weight: 194,184 lbs.

STS-2

November 14, 1981, 1:23:11 p.m. PST, Runway 23, Edwards Air Force Base, Calif. Rollout distance: 7,711 feet. Rollout time: 50 seconds. Landing Weight: 204,262 lbs.

etc, etc...

The space shuttle also lands like around 100 knots faster than a 737 too.

 

[Captain X]

The space shuttle also lands like around 100 knots faster than a 737 too.

Actually we're talkin' about NGs here, so probably only like 50 knots.

 

[airplane wizard]

Maybe they will start putting drag chutes on the NG's.

 

[flyboyike]

Let's back up just a second. There are TWO types of spoilers - Ground and Flight (speedbrakes).

The ground spoilers will deploy upon right main gear squat switch.
The flight spoilers will deploy upon main gear wheelspin.

Right crosswind landings are always rougher because you're getting all the spoilers to deploy at the same time. And old hat taught me to slip the aircraft in the flare to get the left main to touch juuuuuuuust a touch before the right.

The reason to ARM them is so they will auto-deploy upon landing and kill lift BEFORE the T/R's are activated. The T/R deploy is just a backup.

Gup

While we're on the subject of spoilers, what would happen to them if they were deployed and hydraulic pressure was removed. Would they stay up for some period of time, stay up forever or drop more or less right away?

 

[airplane wizard]

While we're on the subject of spoilers, what would happen to them if they were deployed and hydraulic pressure was removed. Would they stay up for some period of time, stay up forever or drop more or less right away?

Drop down, I would think, if they lost HYD pressure. I am not a seven three pilot though.

 

[climbhappy]

go to smartcockpit.com... pretty much says in NOTE: compression of any gear strut causes flight spoilers to deploy...compression of RM LG Strut causes ground spoilers to deploy... irrespective of the conditions although they are outlined..

 

[flyboyike]

Drop down, I would think, if they lost HYD pressure. I am not a seven three pilot though.

I tend to agree with you, but I keep hearing that on the 73 they need pressure to come down as well. I looked on smartcockpit, but found nothing there to indicate one way or the other.

 

[climbhappy]

i'm not a mechanic, but when you advance either thrust lever after weight on wheels, they stowe. I would think an accumulator has pressure sufficient enough to keep them up regardless of a potential failed Hyd A. this if course to me is a safety thing in case you elected to go around once you landed.

 

[Skyboy722]

i'm not a mechanic, but when you advance either thrust lever after weight on wheels, they stowe. I would think an accumulator has pressure sufficient enough to keep them up regardless of a potential failed Hyd A. this if course to me is a safety thing in case you elected to go around once you landed.

No "up" accumulator....

With failed hydraulics they will streamline. Which I have heard in flight will cause them to "float" a little above the stowed position.