Why Kites...
- Thread starter Thumper2
- Start date
OK so I''m bored...
I bought a kite the other day at Canadian tire, an inexpensive one for Canada day, so here is the technical question:
Why in the name of something, does the kite accelerate when there is a gust of wind?
I am an instructor and I guess I should know, but it is still mind boggling.
We fed the line out a afir bit, got the kite airborne, and she would lag downwind a little, but as soon as the wind picked up, the kite seemed to accelerate to a more vertical position. Does anyone on this forum of the knowledged people have any ideas?
I''d be happy for any cool conclusions.
Oh, the reason for being bored, is that we are waiting for RDM to come visit again, so that he can administer another one of those test to one of my students.
I bought a kite the other day at Canadian tire, an inexpensive one for Canada day, so here is the technical question:
Why in the name of something, does the kite accelerate when there is a gust of wind?
I am an instructor and I guess I should know, but it is still mind boggling.
We fed the line out a afir bit, got the kite airborne, and she would lag downwind a little, but as soon as the wind picked up, the kite seemed to accelerate to a more vertical position. Does anyone on this forum of the knowledged people have any ideas?
I''d be happy for any cool conclusions.
Oh, the reason for being bored, is that we are waiting for RDM to come visit again, so that he can administer another one of those test to one of my students.
OK so I''m bored...
I bought a kite the other day at Canadian tire, an inexpensive one for Canada day, so here is the technical question:
Why in the name of something, does the kite accelerate when there is a gust of wind?
I am an instructor and I guess I should know, but it is still mind boggling.
We fed the line out a afir bit, got the kite airborne, and she would lag downwind a little, but as soon as the wind picked up, the kite seemed to accelerate to a more vertical position. Does anyone on this forum of the knowledged people have any ideas?
I''d be happy for any cool conclusions.
Oh, the reason for being bored, is that we are waiting for RDM to come visit again, so that he can administer another one of those test to one of my students.
I bought a kite the other day at Canadian tire, an inexpensive one for Canada day, so here is the technical question:
Why in the name of something, does the kite accelerate when there is a gust of wind?
I am an instructor and I guess I should know, but it is still mind boggling.
We fed the line out a afir bit, got the kite airborne, and she would lag downwind a little, but as soon as the wind picked up, the kite seemed to accelerate to a more vertical position. Does anyone on this forum of the knowledged people have any ideas?
I''d be happy for any cool conclusions.
Oh, the reason for being bored, is that we are waiting for RDM to come visit again, so that he can administer another one of those test to one of my students.
407 Driver
Veteran
- Mar 10, 2003
- 824
- 0
Winnie old boy, just a gut feeling here, but perhaps you should lay off on the MEK Sniffing for a while???
407 Driver
Veteran
- Mar 10, 2003
- 824
- 0
Winnie old boy, just a gut feeling here, but perhaps you should lay off on the MEK Sniffing for a while???
Commodore64
Member
- Mar 28, 2003
- 46
- 0
To answer the question, my guess would be it''s a combination of lift and centripital or was it centrifugal acceleration, since the kite''s path is an arc. I dunno... that''s my take on it.
Commodore64
Member
- Mar 28, 2003
- 46
- 0
To answer the question, my guess would be it''s a combination of lift and centripital or was it centrifugal acceleration, since the kite''s path is an arc. I dunno... that''s my take on it.
First off............Winnie, I agree with 407 get of the glue man, sheesh find a hobby, oops that''s right ya got one "flying kites"
Thumper.............bite me, shouldn''t you be being helpful to the Capt like by getting coffee or something and and about the car, remeber size dosen''t matter
Hey 407...........one of your Alpine brethren is here in Sin city gettin married, a bunch of us were out last night with him for his "last night out" party, wasn''t a pretty picture
Thumper.............bite me, shouldn''t you be being helpful to the Capt like by getting coffee or something and and about the car, remeber size dosen''t matter
Hey 407...........one of your Alpine brethren is here in Sin city gettin married, a bunch of us were out last night with him for his "last night out" party, wasn''t a pretty picture
First off............Winnie, I agree with 407 get of the glue man, sheesh find a hobby, oops that''s right ya got one "flying kites"
Thumper.............bite me, shouldn''t you be being helpful to the Capt like by getting coffee or something and and about the car, remeber size dosen''t matter
Hey 407...........one of your Alpine brethren is here in Sin city gettin married, a bunch of us were out last night with him for his "last night out" party, wasn''t a pretty picture
Thumper.............bite me, shouldn''t you be being helpful to the Capt like by getting coffee or something and and about the car, remeber size dosen''t matter
Hey 407...........one of your Alpine brethren is here in Sin city gettin married, a bunch of us were out last night with him for his "last night out" party, wasn''t a pretty picture
RotorPilot
Senior
- Mar 11, 2003
- 289
- 0
Hi Winnie
QUOTE
I am an instructor and I guess I should know, but it is still mind boggling.
UNQUOTE
I agree with you. You should know !!!
[SIZE= 12pt]
The lifting force of all kites is produced by deflecting the air downward, the resulting change in momentum producing an upward force. The reason for this is that the air traveling over the top of the curved surface of the kite is going faster than the air passing underneath. Fast-moving air creates less pressure; this means there is more pressure underneath the kite, and this helps to force it upwards. (you did read this in your manuals didn’t you, when they where showing how the air flows around the wing…)
Think of the kite as a wing. The air tries to push the kite along. But the string the flyer holds keeps the kite tethered. Since the kite cannot go with the wind flow and the kite is tilted so that the air is deflected downward, with the increase in lift provoked by the increase in the wind’s speed, the kite has no where to go but up.
Both the lift-to-drag ratio and the stability of the kite are functions of the length of cable. The more cable released, the more drag created. That’s why when you want the kite to go up with slower winds, you also reduce the length of the cable and run, to reduce drag and, at the same time, increasing the wind’s flow speed for some extra lift
The only reason for your question is either you are joking or didn’t have your coffee this morning or you are too lazy today to think about it [/SIZE]
I flew lots of the stuff when I was a kid but had all kites built by myself... Fighter kites included and bigger than me at the time
QUOTE
I am an instructor and I guess I should know, but it is still mind boggling.
UNQUOTE
I agree with you. You should know !!!
[SIZE= 12pt]
The lifting force of all kites is produced by deflecting the air downward, the resulting change in momentum producing an upward force. The reason for this is that the air traveling over the top of the curved surface of the kite is going faster than the air passing underneath. Fast-moving air creates less pressure; this means there is more pressure underneath the kite, and this helps to force it upwards. (you did read this in your manuals didn’t you, when they where showing how the air flows around the wing…)
Think of the kite as a wing. The air tries to push the kite along. But the string the flyer holds keeps the kite tethered. Since the kite cannot go with the wind flow and the kite is tilted so that the air is deflected downward, with the increase in lift provoked by the increase in the wind’s speed, the kite has no where to go but up.
Both the lift-to-drag ratio and the stability of the kite are functions of the length of cable. The more cable released, the more drag created. That’s why when you want the kite to go up with slower winds, you also reduce the length of the cable and run, to reduce drag and, at the same time, increasing the wind’s flow speed for some extra lift
The only reason for your question is either you are joking or didn’t have your coffee this morning or you are too lazy today to think about it [/SIZE]
I flew lots of the stuff when I was a kid but had all kites built by myself... Fighter kites included and bigger than me at the time
RotorPilot
Senior
- Mar 11, 2003
- 289
- 0
Hi Winnie
QUOTE
I am an instructor and I guess I should know, but it is still mind boggling.
UNQUOTE
I agree with you. You should know !!!
[SIZE= 12pt]
The lifting force of all kites is produced by deflecting the air downward, the resulting change in momentum producing an upward force. The reason for this is that the air traveling over the top of the curved surface of the kite is going faster than the air passing underneath. Fast-moving air creates less pressure; this means there is more pressure underneath the kite, and this helps to force it upwards. (you did read this in your manuals didn’t you, when they where showing how the air flows around the wing…)
Think of the kite as a wing. The air tries to push the kite along. But the string the flyer holds keeps the kite tethered. Since the kite cannot go with the wind flow and the kite is tilted so that the air is deflected downward, with the increase in lift provoked by the increase in the wind’s speed, the kite has no where to go but up.
Both the lift-to-drag ratio and the stability of the kite are functions of the length of cable. The more cable released, the more drag created. That’s why when you want the kite to go up with slower winds, you also reduce the length of the cable and run, to reduce drag and, at the same time, increasing the wind’s flow speed for some extra lift
The only reason for your question is either you are joking or didn’t have your coffee this morning or you are too lazy today to think about it [/SIZE]
I flew lots of the stuff when I was a kid but had all kites built by myself... Fighter kites included and bigger than me at the time
QUOTE
I am an instructor and I guess I should know, but it is still mind boggling.
UNQUOTE
I agree with you. You should know !!!
[SIZE= 12pt]
The lifting force of all kites is produced by deflecting the air downward, the resulting change in momentum producing an upward force. The reason for this is that the air traveling over the top of the curved surface of the kite is going faster than the air passing underneath. Fast-moving air creates less pressure; this means there is more pressure underneath the kite, and this helps to force it upwards. (you did read this in your manuals didn’t you, when they where showing how the air flows around the wing…)
Think of the kite as a wing. The air tries to push the kite along. But the string the flyer holds keeps the kite tethered. Since the kite cannot go with the wind flow and the kite is tilted so that the air is deflected downward, with the increase in lift provoked by the increase in the wind’s speed, the kite has no where to go but up.
Both the lift-to-drag ratio and the stability of the kite are functions of the length of cable. The more cable released, the more drag created. That’s why when you want the kite to go up with slower winds, you also reduce the length of the cable and run, to reduce drag and, at the same time, increasing the wind’s flow speed for some extra lift
The only reason for your question is either you are joking or didn’t have your coffee this morning or you are too lazy today to think about it [/SIZE]
I flew lots of the stuff when I was a kid but had all kites built by myself... Fighter kites included and bigger than me at the time
RotorPilot
Senior
- Mar 11, 2003
- 289
- 0
Winnie
[SIZE= 12pt]Since you are so bored, is here something for you.
Try to break this one
A Delta Kite Did It[/SIZE]
New World Record, 14509 feet above the soles of our feet.
On Saturday, August 12, 2000, at 17:44 EDT, a high tech delta, having 270 square feet of nylon kite skin, measuring 30 feet from wing tip to wing tip, and 18 feet tall, sporting hollow fiberglass spars 1.5 inches in diameter, flying on 270 pound woven Kevlar line 3/32 inch in diameter, flew from a flying field in Kincardine, Ontario, 860 feet above sea level, N44 degrees, 13 minutes and 08 seconds/ W81 degrees, 31 minutes, 41.2 seconds, to a height of 14,509 feet above the flying field, thereby establishing a new world record for altitude of a single kite on a single string. (previous record 12,471 feet, set by Henry Helm Clayton and A.E. Sweetland, in 1896 at the Blue Hill Meteorological Observatory, south of Boston.
I wonder if TC knew about this "flight "
[SIZE= 12pt]Since you are so bored, is here something for you.
Try to break this one
A Delta Kite Did It[/SIZE]
New World Record, 14509 feet above the soles of our feet.
On Saturday, August 12, 2000, at 17:44 EDT, a high tech delta, having 270 square feet of nylon kite skin, measuring 30 feet from wing tip to wing tip, and 18 feet tall, sporting hollow fiberglass spars 1.5 inches in diameter, flying on 270 pound woven Kevlar line 3/32 inch in diameter, flew from a flying field in Kincardine, Ontario, 860 feet above sea level, N44 degrees, 13 minutes and 08 seconds/ W81 degrees, 31 minutes, 41.2 seconds, to a height of 14,509 feet above the flying field, thereby establishing a new world record for altitude of a single kite on a single string. (previous record 12,471 feet, set by Henry Helm Clayton and A.E. Sweetland, in 1896 at the Blue Hill Meteorological Observatory, south of Boston.
I wonder if TC knew about this "flight "
RotorPilot
Senior
- Mar 11, 2003
- 289
- 0
Winnie
[SIZE= 12pt]Since you are so bored, is here something for you.
Try to break this one
A Delta Kite Did It[/SIZE]
New World Record, 14509 feet above the soles of our feet.
On Saturday, August 12, 2000, at 17:44 EDT, a high tech delta, having 270 square feet of nylon kite skin, measuring 30 feet from wing tip to wing tip, and 18 feet tall, sporting hollow fiberglass spars 1.5 inches in diameter, flying on 270 pound woven Kevlar line 3/32 inch in diameter, flew from a flying field in Kincardine, Ontario, 860 feet above sea level, N44 degrees, 13 minutes and 08 seconds/ W81 degrees, 31 minutes, 41.2 seconds, to a height of 14,509 feet above the flying field, thereby establishing a new world record for altitude of a single kite on a single string. (previous record 12,471 feet, set by Henry Helm Clayton and A.E. Sweetland, in 1896 at the Blue Hill Meteorological Observatory, south of Boston.
I wonder if TC knew about this "flight "
[SIZE= 12pt]Since you are so bored, is here something for you.
Try to break this one
A Delta Kite Did It[/SIZE]
New World Record, 14509 feet above the soles of our feet.
On Saturday, August 12, 2000, at 17:44 EDT, a high tech delta, having 270 square feet of nylon kite skin, measuring 30 feet from wing tip to wing tip, and 18 feet tall, sporting hollow fiberglass spars 1.5 inches in diameter, flying on 270 pound woven Kevlar line 3/32 inch in diameter, flew from a flying field in Kincardine, Ontario, 860 feet above sea level, N44 degrees, 13 minutes and 08 seconds/ W81 degrees, 31 minutes, 41.2 seconds, to a height of 14,509 feet above the flying field, thereby establishing a new world record for altitude of a single kite on a single string. (previous record 12,471 feet, set by Henry Helm Clayton and A.E. Sweetland, in 1896 at the Blue Hill Meteorological Observatory, south of Boston.
I wonder if TC knew about this "flight "
