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Steep Angle Of Attack  
User currently offlineJs From Malta, joined Aug 2001, 108 posts, RR: 0
Posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2775 times:

Wow, now that's a steep angle!

http://www.airliners.net/open.file/614141/L/



11 replies: All unread, jump to last
 
User currently offlineHorus From Egypt, joined Feb 2004, 5230 posts, RR: 59
Reply 1, posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2755 times:

It looks normal to me


EGYPT: A 7,000 Year Old Civilisation
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17027 posts, RR: 67
Reply 2, posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2751 times:

Doesn't seem unusual to me.

Two points about angle of attack (alpha) though:
- Alpha is the angle of the fuse compared to the direction of flight, not the angle between the fuse and the ground. Since this plane is going up (I think) it's not that severe.
- Once the plane is off the ground, pilots don't use alpha as a reference. They simply keep the speed a certain number of knots over V2. If the plane is lightly loaded, this means a high angle of CLIMB (not attack).

It's a mighty nice pic but I can't help but think it might be a plug for your own photography  Big grin




"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineJs From Malta, joined Aug 2001, 108 posts, RR: 0
Reply 3, posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2736 times:

Or it might mean that I thought it was a really steep angle of attack  Big grin

User currently offlineFlymia From United States of America, joined Jun 2001, 7146 posts, RR: 9
Reply 4, posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2727 times:

Looks normal to me too.


"It was just four of us on the flight deck, trying to do our job" (Captain Al Haynes)
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17027 posts, RR: 67
Reply 5, posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2725 times:

I'm not judging. We all plug Big grin


"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineJs From Malta, joined Aug 2001, 108 posts, RR: 0
Reply 6, posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2693 times:

Hey Andreas, I'll be sure to let you know if I decide to plug  Big grin

User currently offlineStarlionblue From Greenland, joined Feb 2004, 17027 posts, RR: 67
Reply 7, posted (10 years 1 month 3 weeks 3 days 2 hours ago) and read 2686 times:

We all tease too  Big grin
filler
filler
filler



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineSupraZachAir From Northern Mariana Islands, joined Feb 2004, 634 posts, RR: 0
Reply 8, posted (10 years 1 month 3 weeks 2 days 23 hours ago) and read 2574 times:

If the plane is lightly loaded, this means a high angle of CLIMB (not attack).

Hmmm. I'm not sure I understand why "angle of climb" and "angle of attack" don't correlate (if not being the same thing). Excluding fighter jets and high HP aerobatic planes, Vy is normally a smaller AOA (higher airspeed) than Vx (greater AOA, lower airspeed). But if we're talking about just holding a certain airspeed, then a lighter aircraft has a higher angle of attack/climb.



User currently offlineInnocuousFox From United States of America, joined Dec 2003, 2805 posts, RR: 14
Reply 9, posted (10 years 1 month 3 weeks 2 days 23 hours ago) and read 2548 times:

If you aren't flying level, you aren't "attacking" level, are you? It's all about comparing the direction of travel to the direction of the wings, as said above.


Dave Mark - Intrinsic Algorithm - Reducing the world to mathematical equations!
User currently offlineVeeref From , joined Dec 1969, posts, RR:
Reply 10, posted (10 years 1 month 3 weeks 2 days 23 hours ago) and read 2517 times:

AOA= angle of the relative wind to the chord line of the wing

At slower airspeeds aircraft must increase AOA in order to keep the same amount of lift. The pitch attitude that an aircraft has for a particular AOA depends on the Angle of Incidence, or the angle between chord line and longitudnal axis of the aircraft.
if you watch a B-52 from the front for example you will notice the nose actually lowers quite noticably after liftoff due to a high angle of incidence. Most newer, or "supercritical" wing designs are more efficient than older wings and require less wing area to generate the same amount of lift. They are also capable of higher Angles of Attack resulting in "steeper" climb.


User currently offlineStarlionblue From Greenland, joined Feb 2004, 17027 posts, RR: 67
Reply 11, posted (10 years 1 month 3 weeks 2 days 22 hours ago) and read 2469 times:

Hmmm. I'm not sure I understand why "angle of climb" and "angle of attack" don't correlate (if not being the same thing).

They do correlate in some ways, but angle of climb is dependent on lift and thrust. Higher angle of attack gives higher lift (up to a point) but it also produces drag.

They are not the same. Angle of climb is the climb rate related to the distance traveled, not Alpha.



"There are no stupid questions, but there are a lot of inquisitive idiots."
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