Simviation Forum - Help with landing

Jun 29^th, 2004 at 12:59am

tomekpalar Offline
1st Lieutenant
I love YaBB 1G - SP1!

Posts: 2

Hi there,
1. can anyone tell me the right approach speed for a Boeing 737-800.


   2. Why is it that everytime I am about to touchdown on the runway and start my flare, the aircraft starts climbing. Is it because of my speed or could it be something else.

   3. Everytime I come up on final I try to hold about 150 knots but the plane never makes it to the runway, it stalls.

   Please help.

Thank you

Back to top

IP Logged

Reply #1 - Jun 29^th, 2004 at 7:44am

Nexus Offline
Colonel
The greater of two evils...

Gender:
Posts: 3282

The 738 doesn't need a big flare rotation, just some 2 degrees is fine (my touchdown attitude never exceeds 5 degrees), land with flaps 40, reduces both your approach speed and deck angle.

150kts is a good approach speed - if you're properly configured! You can't fly at 150kts unless you have extended the flaps to more than 15 degrees.
Infact, 150kts is a good vref+15 speed (if we have to choose a general speed), which means you're flying 15kts faster than threshold crossing speed.
So reduce your speed as you go thru the different flap settings. Approach speed for flaps 40 should be at around 140kts (standard vref+5)

Also check your gross weight, more specific your fuel load Wink

Back to top

IP Logged

Reply #2 - Jun 29^th, 2004 at 9:02am

pooty13901 Offline
Colonel
Binghamton, New York

Gender:
Posts: 144

Let me hop on this discussion here for more...

When you extend the flaps is it normal for the craft to lift the nose. If so, do you counter that by having reduced thrust just before extending incremented flaps or does the reduction in thrust come after the flaps are raised?

Awwww, crap!

Back to top

IP Logged

Reply #3 - Jun 29^th, 2004 at 11:42am

Capt. Farhan Offline
Colonel
I Love Flying
Jeddah

Gender:
Posts: 137

hi.
i always keep my speed at little bit higher than the normal landing speed e.g 160 for the 737. when its time to flare i reduce the throotle completely in this way the speed upon touch down comes to 145 and my wheels touchdown smoothly
now a days i am flying boeing 747-400. and i think its the most easiest plane in simulator.

Back to top

IP Logged

Reply #4 - Jun 29^th, 2004 at 4:26pm

Silver1SWA Offline
Colonel
Morgan Hill, Ca. (SF Bay Area)

Gender:
Posts: 703

Quote:

Let me hop on this discussion here for more...

When you extend the flaps is it normal for the craft to lift the nose. If so, do you counter that by having reduced thrust just before extending incremented flaps or does the reduction in thrust come after the flaps are raised?

Well I know from my Private Pilot training, that it is indeed normal for the nose to pitch upwards upon lowering flaps. Usually, you would anticipate this, and start applying slight nose-down preassure to counter the pitch especially for maintaining the glide slope. However, with each flap setting, you will be shooting to maintain a new airspeed. Therefore, as the nose pitches up after applying flaps, you can let the speed bleed off until the target speed is maintained. The nose will shortly settle back down on its own as the speed settles.

I'm not sure how it's done in the Boeings compared to what you learn when say, flying a cessna, but I know, I have learned in my PPL training, that on approach, you pitch for airspeed and adjust power for altitude. So like I said, as you add flaps, the pitch of the aircraft will be used to control airspeed. If this in turn causes you to become high on approach, you would decrease power to lose some altitude, or vice versa. I have heard however, that in the jets, you pitch to maintain the glide path, and use power for maintaining airspeed. Perhaps Nexus82 could provide a better answer (I know he will find SOMETHING wrong with my post. Wink

). Either way, with pitch adjustments, there will also be the need for power adjustments to maintain a properly configured approach.

Another thing...by the time you are fully configured for approach, with flaps at 30 or 40 degrees in a 737, the engines will be running at around 50-60% N1 to maintain approach speed and proper glide.

P4 3.20Ghz 800Mhz FSB&&1 GB PC3200 400Mhz DDR RAM (Dual Channel)&&Nvidia GeForce 6800GT 256MB 8X AGP&&SB Audigy MP3+&&Win XP Pro

Back to top

IP Logged

Reply #5 - Jun 29^th, 2004 at 5:36pm

Nexus Offline
Colonel
The greater of two evils...

Gender:
Posts: 3282

I don't know if I should take that as a compliment Silver Wink

But what you described reflects pretty much what I would answer to him.
It's much harder to properly fly a 737. In a cessna you get an instant reaction from the propeller, while you have to be more anticipating with the turbofan engines, especially with the old JT8Ds.

Back to top

IP Logged

Reply #6 - Jun 30^th, 2004 at 1:11am

randombeaner Offline
Colonel
MMM...Beans... MMM...Doughnuts
...MMM Hilary Duff.
Sothern California, USA

Gender:
Posts: 406

You might want to give this a try

http://www.amazon.com/exec/obidos/tg/detail/-/0782142370/qid=1088571962/sr=8-2/r... (Its the FS9 Guide)

This is the coolest thing I have bought for FS9

It has Aircraft Information and procedures for takeoff- taxi-etc

It has a whole bunch of strageties and flights to help you understand the lessons

It has checklists for every aircraft in the back two and a big poster in the back

and its only 13 bucks

Sorry for sounding like an infomertial, but this thing rules

Believe half of what you see, 1/4 of what you hear, and nothing that I say&&&&

Back to top

IP Logged

Reply #7 - Jun 30^th, 2004 at 2:55pm

Jolly_Roger Offline
Captain
nOOb
Ottawa, Canada

Gender:
Posts: 3

Thanks for the infomercial randombeaner. I just ordered one!

Back to top

IP Logged

	Search the archive: