How Aircraft Stay In The Air

"Gord Beaman" ) wrote:

(Moggycat) wrote:
:
:AIUI, bumblebee wings are more like helicopter rotors rather than
:simply flapping up and down.
:
:Has something to do with them crashing together overhead on the
:upsweep doesn't it?...

So is the claim that bumblebees, like helicopters, do not really fly?
They just vibrate so badly the Earth rejects them?

In m,
Jack Linthicum radiated into the
WorldWideWait:
"Prof. Vincent Brannigan" wrote in message
...
Pooh Bear wrote:
"Prof. Vincent Brannigan" wrote:

SF Mayor Uniquely Able to Sanction Gay Weddings
is it to approve? or punish?

Depending on the flavour of the gayness - maybe a little corporal
punishment would be seen as approval ?

does corporal punishment outrank private punishment?
Do they use a three line whip?

More importantly, do they volunteer?

Oh, you're not allowed to ask that and they're not allowed to tell.
--
From the one-and-only Holy Moses®

On Thu, 18 Mar 2004 05:04:30 GMT, Fred J. McCall
wrote:

"Gord Beaman" ) wrote:

(Moggycat) wrote:
:
:AIUI, bumblebee wings are more like helicopter rotors rather than
:simply flapping up and down.
:
:Has something to do with them crashing together overhead on the
:upsweep doesn't it?...

So is the claim that bumblebees, like helicopters, do not really fly?
They just vibrate so badly the Earth rejects them?

I'm not certain, but I think the conventional wisdom was that
bumblebees shouldn't be able to fly, based on the understanding of
flight when humans were first beginning to get off the ground. Later
on, as things such as the viscosity of the air, and Reynolds number,
and other such stuff, the theory caught up with the fact that there
are very tiny lift demons that are used by insects.

On Tue, 16 Mar 2004 23:10:24 GMT, "Gord Beaman" ) wrote:

"Prof. Vincent Brannigan" wrote:



running with scissors wrote:

Vegemite not only looks and tastes like axle grease, it has the
viscosity of axle grease. Hmmmm...?

http://www.vegemite.com.au/


Phil

you'll be slating Marmite next!

"slating" is one of my favorite words because it has almost opposite meanings in the USA and UK

EG if a person is "slated for a performance" it has very different meanings


USA slate

Date: 15th century
1 : to cover with slate or a slatelike substance slate a roof
2 : to designate for a specified purpose or action : SCHEDULE was slated to direct the play

Uk slate

Date: 1825
1 : to thrash or pummel severely
2 chiefly British : to criticize or censure severely


personally I think marmite and be used as plaster to repair slate

Vince


Similar to the very different meanings in the UK and North
America of the word 'root' as in "All the girls in the stands
were rooting for their team".

Quite legal and admirable in NA, not quite so in the UK...

Or even worse, the US vs UK slang usage of "pecker" (as in the UK -
Keep a stiff pecker"

Al Minyard

On Thu, 18 Mar 2004 05:04:30 GMT,
allegedly declared to sci.military.naval...
"Gord Beaman" ) wrote:
(Moggycat) wrote:
:AIUI, bumblebee wings are more like helicopter rotors rather than
:simply flapping up and down.
:
:Has something to do with them crashing together overhead on the
:upsweep doesn't it?...

So is the claim that bumblebees, like helicopters, do not really fly?
They just vibrate so badly the Earth rejects them?

No.

More like they do not as much fly as beat the air into submission.

--
Capt. Gym Z. Quirk -- quirk @ swcp.com | /"\ ASCII RIBBON
(Known to some as Taki Kogoma) | \ / CAMPAIGN
Retired 'Secret Master of | X AGAINST HTML MAIL
rec.arts.startrek' | / \ AND POSTINGS

David Phillips wrote in message . ..
On Thu, 18 Mar 2004 05:04:30 GMT, Fred J. McCall
wrote:

"Gord Beaman" ) wrote:

(Moggycat) wrote:
:
:AIUI, bumblebee wings are more like helicopter rotors rather than
:simply flapping up and down.
:
:Has something to do with them crashing together overhead on the
:upsweep doesn't it?...

So is the claim that bumblebees, like helicopters, do not really fly?
They just vibrate so badly the Earth rejects them?

I'm not certain, but I think the conventional wisdom was that
bumblebees shouldn't be able to fly, based on the understanding of
flight when humans were first beginning to get off the ground. Later
on, as things such as the viscosity of the air, and Reynolds number,
and other such stuff, the theory caught up with the fact that there
are very tiny lift demons that are used by insects.

http://www.maa.org/mathland/mathland_3_31.html

This is one story of the origin of the statement. The biologist was
too polite to suggest to the Swiss aerdynamicist that he had used too
many assumptions in his cocktail napkin model. Smooth wings, weight,
wing area, etc meant the wing area was insufficient to allow the
bumblebee to fly. No mention of lift pixies or any of the other
well-known (to biologists) extraneous factors, such as mass hypnotism.

"So, no one "proved" that a bumblebee can't fly. What was shown was
that a certain simple mathematical model wasn't adequate or
appropriate for describing the flight of a bumblebee. Insect flight
and wing movements can be quite complicated. Wings aren't rigid. They
bend and twist. Stroke angles change." pixies take breaks, etc.

"whooh, whooh, whooh, whooh, whooh, whooh (cough) whooh, whooh, whooh,
whooh, whooh" Printing on the cork of Smoking Loon Merlot, 1999.

In article , Alan Minyard
writes
On Tue, 16 Mar 2004 23:10:24 GMT, "Gord Beaman" ) wrote:

"Prof. Vincent Brannigan" wrote:



running with scissors wrote:

Vegemite not only looks and tastes like axle grease, it has the
viscosity of axle grease. Hmmmm...?

http://www.vegemite.com.au/


Phil

you'll be slating Marmite next!

"slating" is one of my favorite words because it has almost opposite meanings
in the USA and UK

EG if a person is "slated for a performance" it has very different meanings


USA slate

Date: 15th century
1 : to cover with slate or a slatelike substance slate a
roof
2 : to designate for a specified purpose or action :
SCHEDULE was slated to direct the play

Uk slate

Date: 1825
1 : to thrash or pummel severely
2 chiefly British : to criticize or censure severely


personally I think marmite and be used as plaster to repair slate

Vince


Similar to the very different meanings in the UK and North
America of the word 'root' as in "All the girls in the stands
were rooting for their team".

Quite legal and admirable in NA, not quite so in the UK...

Or even worse, the US vs UK slang usage of "pecker" (as in the UK -
Keep a stiff pecker"


Never heard that - it was usually "keep your pecker up". The Shorter
Oxford Dictionary records "pecker" as being mid-19th century usage for
Courage or resolution. The US usage is 20th century.

"Fanny" has different meanings in the US and the UK. They are close,
anatomically speaking, but very different...

Al Minyard

--
Peter

Ying tong iddle-i po!

(Jack Linthicum) wrote in message . com...
David Phillips wrote in message . ..
On Thu, 18 Mar 2004 05:04:30 GMT, Fred J. McCall
wrote:

"Gord Beaman" ) wrote:

(Moggycat) wrote:
:
:AIUI, bumblebee wings are more like helicopter rotors rather than
:simply flapping up and down.
:
:Has something to do with them crashing together overhead on the
:upsweep doesn't it?...

So is the claim that bumblebees, like helicopters, do not really fly?
They just vibrate so badly the Earth rejects them?

I'm not certain, but I think the conventional wisdom was that
bumblebees shouldn't be able to fly, based on the understanding of
flight when humans were first beginning to get off the ground. Later
on, as things such as the viscosity of the air, and Reynolds number,
and other such stuff, the theory caught up with the fact that there
are very tiny lift demons that are used by insects.

http://www.maa.org/mathland/mathland_3_31.html

This is one story of the origin of the statement. The biologist was
too polite to suggest to the Swiss aerdynamicist that he had used too
many assumptions in his cocktail napkin model. Smooth wings, weight,
wing area, etc meant the wing area was insufficient to allow the
bumblebee to fly. No mention of lift pixies or any of the other
well-known (to biologists) extraneous factors, such as mass hypnotism.

"So, no one "proved" that a bumblebee can't fly. What was shown was
that a certain simple mathematical model wasn't adequate or
appropriate for describing the flight of a bumblebee. Insect flight
and wing movements can be quite complicated. Wings aren't rigid. They
bend and twist. Stroke angles change." pixies take breaks, etc.

"whooh, whooh, whooh, whooh, whooh, whooh (cough) whooh, whooh, whooh,
whooh, whooh" Printing on the cork of Smoking Loon Merlot, 1999.

Actually bumblebees still can't fly.
There are, however, little walkways to their favourite flowers.
The wings are just for balance...
:-)

In ,
Taki Kogoma radiated into the WorldWideWait:
On Thu, 18 Mar 2004 05:04:30 GMT,
allegedly declared to sci.military.naval...
"Gord Beaman" ) wrote:
(Moggycat) wrote:

AIUI, bumblebee wings are more like helicopter rotors rather than
simply flapping up and down.

Has something to do with them crashing together overhead on the
upsweep doesn't it?...

So is the claim that bumblebees, like helicopters, do not really
fly? They just vibrate so badly the Earth rejects them?

No.

More like they do not as much fly as beat the air into submission.

Hotdesking is a BEE???
--
From the one-and-only Holy Moses®

Peter Twydell wrote:

In article , Alan Minyard
writes
On Tue, 16 Mar 2004 23:10:24 GMT, "Gord Beaman" ) wrote:

"Prof. Vincent Brannigan" wrote:



running with scissors wrote:

Vegemite not only looks and tastes like axle grease, it has the
viscosity of axle grease. Hmmmm...?

http://www.vegemite.com.au/


Phil

you'll be slating Marmite next!

"slating" is one of my favorite words because it has almost opposite meanings
in the USA and UK

EG if a person is "slated for a performance" it has very different meanings


USA slate

Date: 15th century
1 : to cover with slate or a slatelike substance slate a
roof
2 : to designate for a specified purpose or action :
SCHEDULE was slated to direct the play

Uk slate

Date: 1825
1 : to thrash or pummel severely
2 chiefly British : to criticize or censure severely


personally I think marmite and be used as plaster to repair slate

Vince


Similar to the very different meanings in the UK and North
America of the word 'root' as in "All the girls in the stands
were rooting for their team".

Quite legal and admirable in NA, not quite so in the UK...

Or even worse, the US vs UK slang usage of "pecker" (as in the UK -
Keep a stiff pecker"


Never heard that - it was usually "keep your pecker up". The Shorter
Oxford Dictionary records "pecker" as being mid-19th century usage for
Courage or resolution. The US usage is 20th century.

"Fanny" has different meanings in the US and the UK. They are close,
anatomically speaking, but very different...

Al Minyard

Isn't pecker in UK lips/kisser?
--

-Gord.