About to stall.................?
Thread Starter
About to stall.................?
Interesting footage. Didn't do that well at physics in my youth, but I do know that heavy things don't stay up all that long.
What do you boys think of the attached?
Jumbo Jet Hovers In the Sky on MSN Video
What do you boys think of the attached?
Jumbo Jet Hovers In the Sky on MSN Video
What do you boys think of the attached?
Well, I this "boy" thinks that you should have a look at the two pages of relevant posts in Spotters' Corner!
http://www.pprune.org/spectators-bal...-air-show.html
Jack
Ecce Homo! Loquitur...
Pah! Modern FBW stuff.
Had an air display day at RAF Boulmer many moons ago when there was a very strong wind down the display line.
8 Sqn Shackleton did a slow pass down the line - then throttled back and drifted slowly backwards down the line in the opposite direction, before throttling up and accelerating* past the crowd for the third time and away. Very impressive.
*I know, I know, it was a Shack - but everything's relative.
Had an air display day at RAF Boulmer many moons ago when there was a very strong wind down the display line.
8 Sqn Shackleton did a slow pass down the line - then throttled back and drifted slowly backwards down the line in the opposite direction, before throttling up and accelerating* past the crowd for the third time and away. Very impressive.
*I know, I know, it was a Shack - but everything's relative.
Per Ardua ad Astraeus
Join Date: Mar 2000
Location: UK
Posts: 18,579
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by ORAC
I know, I know, it was a Shack - but everything's relative
Time for the 'flying the circuit at White Waltham in a Chipmunk backwards' story again?
Time for the 'flying the circuit at White Waltham in a Chipmunk backwards' story again?
Hotly pursued by the Stringbag being overtaken by the sheepdog!
Jack
Hotly pursued by the Stringbag being overtaken by the sheepdog!
Jack
Flown backwards in a Bulldog (and the bona jet, but I suppose that's regarded as cheating) at Leeming
Also climbed in no power glide attitude and descended at max rate climb due to mountain wave activity, also out of Leeming, under the hood on an early IF trip - definitely brain-scrambling! Power, Attitude, Faith. Ee, it's tough in Yorkshire.
Also climbed in no power glide attitude and descended at max rate climb due to mountain wave activity, also out of Leeming, under the hood on an early IF trip - definitely brain-scrambling! Power, Attitude, Faith. Ee, it's tough in Yorkshire.
Per Ardua ad Astraeus
Join Date: Mar 2000
Location: UK
Posts: 18,579
Likes: 0
Received 0 Likes
on
0 Posts
Ee, it's tough in Yorkshire.
Have you tried the effect on ATC if you come to the hover on a GCA? Even more impressive, I believe, is going back up the glideslope, but I recall this caused a nervous breakdown in talkdown
Join Date: Jan 2001
Location: Home
Posts: 3,399
Likes: 0
Received 0 Likes
on
0 Posts
Orac
Re the Shackleton going backwards.
Are you seriously trying to tell me that there was an air day which was not cancelled even though there was 100kts of wind?
Shackleton must have a stall speed in the 90kts range, needing 100ish to "go backwards".
Stringbag, yes it can be done and has been done on windy days.
Shackleton I think total bollocks unless you have evidence.
Re the Shackleton going backwards.
Are you seriously trying to tell me that there was an air day which was not cancelled even though there was 100kts of wind?
Shackleton must have a stall speed in the 90kts range, needing 100ish to "go backwards".
Stringbag, yes it can be done and has been done on windy days.
Shackleton I think total bollocks unless you have evidence.
Ecce Homo! Loquitur...
Are you seriously trying to tell me that there was an air day which was not cancelled even though there was 100kts of wind?
Flown backwards in a Bulldog
To this day I still have no idea how on earth we managed it, but to a fly on the wall (canopy) it must have been priceless to see instructor and student sitting there, looking at each other and both instinctively thinking the same thing ... WTF?!!!!
Join Date: Apr 2009
Location: Hotel Gypsy
Posts: 2,821
Likes: 0
Received 0 Likes
on
0 Posts
Stall 'speeds' - an interesting concept. When I were a lad I was taught about angles of attack, relative airflow etc I can quite happily entertain the concept whereby a Shack can travel backwards over the ground with a surface wind speed being noticeably lower than an aircraft's "stall speed".
Join Date: Jan 2001
Location: Home
Posts: 3,399
Likes: 0
Received 0 Likes
on
0 Posts
ORAC
"gale" covers up to about 40kts/Force 8
"Hurricane" is up to about 65ish kts/Force 12 and has the description:-
"Huge waves. Sea is completely white with foam and spray. Air is filled with driving spray, greatly reducing visibility.Very widespread damage to vegetation. Some windows may break; mobile homes and poorly constructed sheds and barns are damaged. Debris may be hurled about"
This though, obviously would not be anywhere near enough wind to make a Shackleton fly backwards down the display line.
Wiki reckons that Shackleton stall speed is about 88-96 kts (my first guess was not far wrong!)
To fly noticably backwards down the display line would require at least 100kts+ steady wind.
Have you ever tried to stand in 100kts of wind? Can you seriously imagine a crowdline under these circumstances?
Cows getting bigger
Yes, I am aware that stalling is only reliant on AoA, but it is perfectly valid to use an airspeed for an aircraft flying straight and level with no ballistic component, unless you are suggesting such an event?
Please entertain me with your concept where a Shack can fly in a sustained manner backwards down a crowd line at below it's stall speed. I am agog with anticipation.
This is an apocryphal story that perhaps people have not really thought about with a sensible head on.
Unless my guess and Wiki are wrong by about 50kts for the stall speed, this story is cr@p.
"gale" covers up to about 40kts/Force 8
"Hurricane" is up to about 65ish kts/Force 12 and has the description:-
"Huge waves. Sea is completely white with foam and spray. Air is filled with driving spray, greatly reducing visibility.Very widespread damage to vegetation. Some windows may break; mobile homes and poorly constructed sheds and barns are damaged. Debris may be hurled about"
This though, obviously would not be anywhere near enough wind to make a Shackleton fly backwards down the display line.
Wiki reckons that Shackleton stall speed is about 88-96 kts (my first guess was not far wrong!)
To fly noticably backwards down the display line would require at least 100kts+ steady wind.
Have you ever tried to stand in 100kts of wind? Can you seriously imagine a crowdline under these circumstances?
Cows getting bigger
Yes, I am aware that stalling is only reliant on AoA, but it is perfectly valid to use an airspeed for an aircraft flying straight and level with no ballistic component, unless you are suggesting such an event?
Please entertain me with your concept where a Shack can fly in a sustained manner backwards down a crowd line at below it's stall speed. I am agog with anticipation.
This is an apocryphal story that perhaps people have not really thought about with a sensible head on.
Unless my guess and Wiki are wrong by about 50kts for the stall speed, this story is cr@p.
Join Date: May 2011
Location: Malkin Tower
Posts: 847
Likes: 0
Received 0 Likes
on
0 Posts
SHACKLETON DATA says the stalling speed for a Shackleton AEW2 was 92 mph (not knots)