|
|
ATR
Oct 5, 2011 22:43:02 GMT 12
Post by Ykato on Oct 5, 2011 22:43:02 GMT 12
|
|
|
|
ATR
Oct 6, 2011 7:04:31 GMT 12
Post by Ykato on Oct 6, 2011 7:04:31 GMT 12
|
|
|
|
ATR
Oct 7, 2011 7:16:42 GMT 12
Post by Ykato on Oct 7, 2011 7:16:42 GMT 12
|
|
|
|
ATR
Oct 7, 2011 14:22:52 GMT 12
Post by Darren Masters on Oct 7, 2011 14:22:52 GMT 12
Nice pics mate. Thanks for sharing! I still can't get over how the ATR blades are shaped!
|
|
|
|
ATR
Oct 7, 2011 15:44:13 GMT 12
Post by flyjoe180 on Oct 7, 2011 15:44:13 GMT 12
Why can't you get over how the blades are shaped? **awaiting punchline*
|
|
|
|
ATR
Oct 7, 2011 16:03:29 GMT 12
Post by Darren Masters on Oct 7, 2011 16:03:29 GMT 12
Why can't you get over how the blades are shaped? **awaiting punchline* Their shape is too weird to,errr, get over... |
|
|
|
ATR
Oct 8, 2011 22:36:14 GMT 12
Post by haughtney1 on Oct 8, 2011 22:36:14 GMT 12
If there ever was an ugly aeroplane, the ATR-72 certainly wins
|
|
|
|
ATR
Oct 9, 2011 1:48:12 GMT 12
Post by nuuumannn on Oct 9, 2011 1:48:12 GMT 12
Yep, haughtney1, too true, made of tin foil too; break real easy. B1900 hit with the ugly stick too, then they stuck the ugly stick to it when they discovered the aerodynamics were a mess...
|
|
|
|
ATR
Oct 9, 2011 1:51:24 GMT 12
Post by haughtney1 on Oct 9, 2011 1:51:24 GMT 12
I didnt want to bag the 1900, its almost like beating up someone in a wheelchair :-)
|
|
|
|
ATR
Oct 10, 2011 17:34:25 GMT 12
Post by Ykato on Oct 10, 2011 17:34:25 GMT 12
Nice pics mate. Thanks for sharing! I still can't get over how the ATR blades are shaped! thanks darren - like wise with your FEQ & Heli pylon pics. |
|
|
|
ATR
Oct 15, 2011 13:40:53 GMT 12
Post by nuuumannn on Oct 15, 2011 13:40:53 GMT 12
I didnt want to bag the 1900, its almost like beating up someone in a wheelchair :-) ;D ;D ;D |
|
|
|
ATR
Oct 16, 2011 19:08:45 GMT 12
Post by sqwark2k on Oct 16, 2011 19:08:45 GMT 12
They're SCIMITAR blades, named after the shape of the Scimitar Sword.... I was going to get techincal on y'all but Wiki has a decent blurb:
Turboprops have a fairly narrow sweet spot at speeds below about 450 mph. All propellers lose efficiency at high speed, due to an effect known as wave drag which occurs just below supersonic speeds. This powerful form of drag exhibits sudden onset, and it led to the concept of a sound barrier when it was first encountered in the 1940s. In the case of a propeller, this effect can happen when the prop is spun fast enough that the tips of the prop start traveling near the speed of sound, even if the plane itself is not moving forward.
This can be controlled to some degree by adding more blades to the prop, absorbing more power at a lower rotational speed. This is why some WWII fighters started with two-blade props and were using five-blade designs by the end of the war. The only downside to this approach is that adding blades makes the propeller harder to balance and maintain. At some point, though, the forward speed of the plane combined with the rotational speed of the propeller will once again result in wave drag problems. For most aircraft, this will occur at speeds over about 450 mph.
A method of decreasing wave drag was discovered by German researchers in WWII: sweeping the wing backward. Today, almost all aircraft designed to fly much above 450 mph (700 km/h) use a swept wing. In the 1940s, NACA started researching propellers with similar sweep. Since the inside of the prop is moving more slowly than the outside, the blade becomes progressively more swept toward the outside, leading to a curved shape similar to that of a scimitar.
|
|
|
|
ATR
Oct 17, 2011 12:04:04 GMT 12
Post by flyjoe180 on Oct 17, 2011 12:04:04 GMT 12
I actually like the look of the ATR42 and72. On the ground it looks weird with the wheels so close in, but cleaned up it looks the part. The B1900, well, no one would ever admit to it being a nice looking machine. But I hear it flies and handles really nicely. Unlike the Metro, a fast looking tube which looks quite cool (with it's insect legs retracted), but handles like shit.
|
|
|
|
ATR
Mar 13, 2012 10:34:40 GMT 12
Post by Ykato on Mar 13, 2012 10:34:40 GMT 12
|
|
|
|
ATR
Mar 14, 2012 11:11:00 GMT 12
Post by flyjoe180 on Mar 14, 2012 11:11:00 GMT 12
Nice mood shot there Ykato  |
|
|
|
ATR
Mar 17, 2012 19:52:53 GMT 12
Post by Ykato on Mar 17, 2012 19:52:53 GMT 12
|
|
|
|
ATR
Mar 17, 2012 20:03:02 GMT 12
Post by Ykato on Mar 17, 2012 20:03:02 GMT 12
|
|
|
|
ATR
Mar 17, 2012 20:47:03 GMT 12
Post by beagle on Mar 17, 2012 20:47:03 GMT 12
The last one is not an ATR........
but we will allow it. hehe
oh how I love the clear south island skies
|
|
|
|
ATR
Mar 17, 2012 21:00:55 GMT 12
Post by Ykato on Mar 17, 2012 21:00:55 GMT 12
The last one is not an ATR........ but we will allow it. hehe oh how I love the clear south island skies ;D darn so you wouldn't believe me it I told it you it was an new & improved ATR. |
|
|
|
ATR
Mar 17, 2012 21:19:44 GMT 12
Post by beagle on Mar 17, 2012 21:19:44 GMT 12
that guy in chch took to it with his knives before being shot too...........
|
|
