Official Plane Spotting Thread.

[9V-Orion Images]

yea, i notice A320 and B737 AoA is not so different.

In yr 1st paragraphy, you mean that becoz of alpha floor protection, airbus allows their aircrafts to fly at higher AoA to achieve lower speed during landing AND not compromise chances of stall?

I hope you understand what i'm trying to say

Like i said, it's something that i had heard many times, might have got a couple of details mixed up too. Take it with a pich of salt, like i did.

 

[9V-Orion Images]

Alpha floor protects the floor sounds more correct. It doesnt really strenghten the fuselage. It works by taking over the pilot by put thrust to TOGA and lower e pitch, hence prevent stall.
Correct me if i'm wrong too.

Which happens when the critical AoA is about to be exceeded. There is a difference between AoA and pitch angle, BTW.

I don't think the typical AoA for the A320 and B737 during approch exceeds 5 degrees anyway.

 

[Learnphotography]

Which happens when the critical AoA is about to be exceeded. There is a difference between AoA and pitch angle, BTW.

I don't think the typical AoA for the A320 and B737 during approch exceeds 5 degress anyway.

yes, you are right
this photo gallery is becoming off-topic. haha

Would like to see some shot of SQ's A330-343E/343X

 

[harper]

Probably this is as close as you can get to a B707 in Singapore.

yah, seldom get to snap them...

 

[9V-Orion Images]

yes, you are right
this photo gallery is becoming off-topic. haha

Would like to see some shot of SQ's A330-343E/343X

Looking back at the postings, i probably confused Learnphotography and Stupidcowz when i used the term "alpha floor protection mode" when referring to the Vs ratio (stall speed). What i had really meant was probably "flight envelope protection", mine bad. Time to go back to school with cowz. :sweat:

 

[Stupidcowz]

Looking back at the postings, i probably confused Learnphotography and Stupidcowz when i used the term "alpha floor protection mode" when referring to the Vs ratio (stall speed). What i had really meant was probably "flight envelope protection", mine bad. Time to go back to school with cowz. :sweat:

Haha,

I like the tone of orion's post .. sheer confusion .. just blurrness like :dunno: :bsmilie:

Critical AoA is about greater than 15 degrees FYI, because the higher AoA in front also means the angle of decent of the top airflow down the wing is greater, so in the event of AoA >15, the top airflow tends to collide into the btm instead of closing up into a parallel flow, the collision results in turbulent flow in the form of a circles, this effect is greatest at the wingtip, thus winglets are a very useful feature.

Ok, addition info bout flight enve. Basically, it's an interface in the plane's computer that prevents the aircraft from flying beyond it's structural & aerodynamic limits, and all modern civil airliners are equiped with that interface.

Right, off topic aside now. Hope Orion isnt still :dunno:
SIA A330 nvr got a chance to shoot it. Mmm, Snow how many A330s do we have?

Cowz.

 

[crazyK]

Haha,


SIA A330 nvr got a chance to shoot it. Mmm, Snow how many A330s do we have?

Cowz.

the last one i saw earlier this month was 9V-STE, assume that its in service now. So that makes a total of 5 A330s.:bsmilie:

cheers!

 

[crazyK]

For the 744, I can tell you I was very close to it near 02L. Only issue was a old camera and a not so perfect shot.

thats in fact really close. thought why would a 744 landing in seletar.

thanks!

 

[9V-Orion Images]

Haha, I like the tone of orion's post .. sheer confusion .. just blurrness like :dunno: :bsmilie:

Critical AoA is about greater than 15 degrees FYI, because the higher AoA in front also means the angle of decent of the top airflow down the wing is greater, so in the event of AoA >15, the top airflow tends to collide into the btm instead of closing up into a parallel flow, the collision results in turbulent flow in the form of a circles, this effect is greatest at the wingtip, thus winglets are a very useful feature.

I'm not confused, just wanted to clarify myself to prevent confusion. Lower Vs (stall speed) ratio results in a higher AoA to maintain the appropriate rate of descent during ILS approches, nothing to do with alpha floor protection at all.

Ok, addition info bout flight enve. Basically, it's an interface in the plane's computer that prevents the aircraft from flying beyond it's structural & aerodynamic limits, and all modern civil airliners are equiped with that interface.

In the case of Airbus, flight envelope protection fully controls what the pilot can or can't do. Whereas for Boeing aircrafts, the pilots have the authority to override the flight envelope protection. China Airlines Flight-006 might not have been saved if the pilot had not deliberately flown beyond the B747SP flight envelope.

 

[harper]

Probably this is as close as you can get to a B707 in Singapore.

this close...

 

[Learnphotography]

Love the 707's wing flex

 

[Stupidcowz]

this close...

Right,

anymore closer shots?

Cowz.

 

[harper]

Right,

anymore closer shots?

Cowz.

no photos allowed in the inners ah...

 

[9V-Orion Images]

this close...

Nicely taken.:thumbsup:
What lens did you used?

 

[Snoweagle]

Love the 707's wing flex

It looks flexed becos of either ultrawide angle or fisheye on a cropped body.

 

[harper]

It looks flexed becos of either ultrawide angle or fisheye on a cropped body.

yah, its due to stiching in PS...

 

[harper]

Nicely taken.:thumbsup:
What lens did you used?

think i was using a 14-42 for this pic.

 

[Stupidcowz]

think i was using a 14-42 for this pic.

Mmm,

On a E-510? Hee, good config. Say harper, you tried Olym OM lenses before?

Ok, here's a shot i took from my Olympus SP570UZ while I was in Vietnam, didn't bring my E-510 there cos I scared tio stolen

Ok mind the big watermark again :X

Cowz.

 

[Ericang]

 

[Learnphotography]

some of you might like to watch high quality aviation video:
http://www.flightlevel350.com/index.php

it is a video version of airliners.net