stunthanger.com
General control line discussion => Open Forum => Topic started by: Bob Reeves on February 09, 2009, 12:19:07 PM
-
I figure "60" is the magic number.. What am I talking about, not age or weight...
-
.... Line length ......
-
IQ or wingspan, your choice:).
Robert
-
The engine Rootbeard needs to make his Twister perform.
-
Nope!
-
MPH?
-
It's what the mininum difference between wind speed and temperature needs to be for it to be good flying weather. If the difference is only 30 like today, 30 MPH wind and 60 deg it ain't good.. Same if it's light wind but cold.. 5 MPH wind 40 deg is 35.. too cold.. But 10 MPH wind and 70 is fine as would be 5 MPH and 65 deg.. 10-70, 30-90 might be a little tough but not unusual in Oklahoma..
So the magic number (in my book) is 60, now we just need a name for this wind/temperature factor ;D
-
Thought Bob was talkin' about the number of attempts before my first successful cloverleaf. :-\
Phil
-
Hi Bob,
"...... So the magic number (in my book) is 60, now we just need a name for this wind/temperature factor ....."
Some suggestions for names: _______________ factor
Florida
Rio De Janeiro
Southern France
Southern California
Your Local Blimp Hanger? LL~
Regards, H^^
-
RETIREMENT #^
I just did. y1
-
wind/temp-index or stunt heaven calculator
-
A 70 mph wind, and 10 degree F outside, great flyin', huh?
from the DEFINITION:
mininum difference between wind speed and temperature needs to be for it to be good flying weather
70 - 10 = 60
I think 60 is the sum of The Answer to the Ultimate Question of Life, the Universe, and Everything (42) and the perfect age for a girlfriend (18)..
In mathematics
42 is an abundant number; its factorization 2 · 3 · 7 makes it the second sphenic number and also the second of the form { 2 · 3 · r }. As with all sphenic numbers of this form, the aliquot sum is abundant by 12. 42 is also the second sphenic number to be bracketed by twin primes; 30 also rests between two primes. 42 has a 14 member aliquot sequence 42, 54, 66, 78, 90, 144, 259, 45, 33, 15, 9, 4, 3, 1, 0 and is itself part of the aliquot sequence commencing with the first sphenic number 30. Further, 42 is the 10th member of the 3-aliquot tree.
42 is the product of the first three terms of Sylvester's sequence; like the first four such numbers it is also a primary pseudoperfect number.
It is the sum of the totient function for the first eleven integers.
It is a Catalan number. Consequently, 42 is the number of noncrossing partitions of a set of five elements, the number of triangulations of a heptagon, the number of rooted ordered binary trees with six leaves, the number of ways in which five pairs of nested parentheses can be arranged, etc.
It is the reciprocal of a Bernoulli number.
It is conjectured to be the scaling factor in the leading order term of the "sixth moment of the Riemann zeta function".
It is a pronic number, and the third 15-gonal number. It is a meandric number and an open meandric number.
Since the greatest prime factor of 422 + 1 = 1765 is 353 and thus more than 42 twice, 42 is a Størmer number.
42 is a perfect score on the USA Math Olympiad (USAMO) and International Mathematical Olympiad (IMO).
In base 10, this number is a Harshad number and a self number, while it is a repdigit in base 4 (as 222).
The eight digits of pi beginning from 242,422 places after the decimal point are 42424242.
Given 27 same-size cubes whose nominal values progress from 1 to 27, a 3×3×3 "magic cube" can be constructed such that every row, column, and corridor, and every diagonal passing through the center, comprises 3 cubes whose sum of values is 42.
In science
* The atomic number of molybdenum
* The angle in degrees for which a rainbow appears
* In 1965, mathematician Paul Cooper theorized that the fastest, most efficient way to travel across continents would be to bore a straight hollow tube directly through the Earth, connecting a set of antipodes, evacuate it (remove the air), and then just fall through. The first half of the journey consists of free-fall acceleration, while the second half consists of an exactly equal deceleration. The time for such a journey works out to be 42 minutes. Remarkably, even if the tube does not pass through the exact center of the Earth, the time for a journey powered entirely by gravity always works out to be 42 minutes, as long as the tube remains friction-free, as while gravity's force would be lessened, so would the distance traveled at an equal rate. The same idea was proposed by Lewis Carroll in Sylvie and Bruno, volume 2, chapter 7, without calculation.
In astronomy
* Messier object M42, a magnitude 5.0 diffuse nebula in the constellation Orion, also known as the Orion Nebula
* The New General Catalogue object NGC 42, a spiral galaxy in the constellation Pegasus
* In January 2005, Asteroid 2001 DA42 was given the name Asteroid Douglasadams, named for the author Douglas Adams who popularized the number 42 and died in 2001. With even his initials in the provisional designation, Brian G. Marsden, the director of the Minor Planet Center and the secretary for the naming committee, said, "This was sort of made for him, wasn't it?"
In religion
The number 42 appears in various contexts in Christianity. There are 42 generations (names) in the Gospel of Matthew's version of the Genealogy of Jesus; it is prophesied that for 42 months the Beast will hold dominion over the Earth (Revelation 13:5); 42 men of Beth-azmaveth were counted in the census of men of Israel upon return from exile (Ezra 2:24); God sent bears to maul 42 of the youths who mock Elisha for his baldness (2 Kings 2:23), etc.
42 also occurs in other religions. There are 42 principles of Ma'at, the Ancient Egyptian personification of physical and moral law, order, and truth. In the judgement scene described in the Egyptian and the Book of the Coming/Going Forth by Day (the Book of the Dead (which evolved from the Coffin Texts and the Pyramid Texts)), there are 42 Gods and Goddesses of Egypt, personifying the principles of Ma'at, who ask questions of the departed, while Thoth records the answers, and the deceased's heart is weighed against the feather of Truth (Ma'at). These 42 correspond to the 42 Nomes (Governmental Units) of Egypt. If the departed successfully answers all 42, s/he becomes an Osiris.
In Judaism, the number (in the Babylonian Talmud, compiled 375 AD to 499 AD) of the "Forty-Two Lettered Name" ascribed to God. Rab (or Rabhs), a 3rd century source in the Talmud stated "The Forty-Two Lettered Name is entrusted only to him who is pious, meek, middle-aged, free from bad temper, sober, and not insistent on his rights". [Source: Talmud Kidduschin 71a, Translated by Rabbi Dr. I. Epstein]. Maimonides felt that the original Talmudic Forty-Two Lettered Name was perhaps composed of several combined divine names [Maimonides "Moreh"]. The apparently unpronouncable Tetragrammaton provides the backdrop from the Twelve-Lettered Name and the Forty-Two Lettered Name of the Talmud.
42 is the number with which God creates the Universe in Kabalistic tradition. In Kabbalah, the most significant name is that of the En Sof (also known as "Ein Sof", "Infinite" or "Endless"), who is above the Sefirot (sometimes spelled "Sephirot").[7] The Forty-Two-Lettered Name contains four combined names which are spelled in Hebrew letters (spelled in letters = 42 letters), which is the name of Azilut (or "Atziluth" "Animation"). While there are obvious links between the Forty-Two Lettered Name of the Babylonian Talmud and the Kabbalah's Forty-Two Lettered Name, they are probably not identical due to the Kabbalah's emphasis on numbers. (he Kabbalah also contains a Forty-Five Lettered Name and a Seventy-Two Lettered Name.)
And 18, well don't even get me started on 18!
L.
"We especially need imagination in science. It is not all mathematics, nor all logic, but
it is somewhat beauty and poetry." -Maria Mitchell
-
Man, there's a showoff in every crowd...
-
I think you'll need to specify that the temp. must always be the higher number. Otherwise (as has been pointed out) you'll get things like "60 mph wind, 0 d. temp."
Even then I dunno how useful this is gonna be, 40 mph wind in 100 d. temp? Don't think so.
My magic number is 50, as in when it's below 50 d. I don't go out. Wind "depends"--on what I'm planning to fly! Hmmmm, maybe 50 works there too: Average airspeed must = 50 or more above wind speed? (Yes, I'd fly--have flown--a 100mph combat wing in 50 mph winds. I lived in Okla.!)
-
"...... So the magic number (in my book) is 60, now we just need a name for this wind/temperature factor ....."
Some suggestions for names: _______________ factor
FLY factor!
60 is my number to fly by too! LL~
"Tight lines!"
Wes
-
Larry,
You should have written that in Japanese to make it a little more of a "challenge" to understand!
-
60 OZ is the magic weight.
-
60 OZ is the magic weight.
Ya but afraid I may not make it.. Looks like I will only have 5 ounces left for color, clear and tip weight :(
-
Bob,
Here is a thought.
Put one ounce of tip weight in the wing and shoot 4 ounces of clear. LL~
Abra-cadbra
-
42 is how old Fran was when I was 21. Which makes everything else in this thread just completely not worth reading. Difficult to concentrate on pi or anything relating to perfect scores or whatever.
Perhaps it are just me.
-
Larry,
Doug Addams is spinning in his grave.
-
AND..speakin of grave flippin....I think it should include our beloved NEWTON....(humm? or my beloved loonie-toon man (who I hear also turned 60 recently...Alfred E. NeUman!
-
Larry,,
perhaps more time sanding balsa and less writing mathmatical observations? wheww, and I thought I was off on tangents grin
%^@
-
Soooo Bob,
Your saying that it's a nice day to fly if the temperature is 100 degrees and the wind is blowing 40 MPH?
That equals 60 doesn't it????????? LL~
Jim the jokster Pollock,
-
Larry C. now has me compeltely confused, which doesn't take much.
Bob R. I started to think was talking his age, but, then I said he has been retired a few years.
As far as flying temp here in Kansas, I agree with Mr. Silver Fox Lew Woolard, anything below 65 degrees F is too cold. If you can still stand up it is not too windy.
Now Bob I agree about the plane finish, but, add your AMA number first.
Having fun, DOC Holliday
-
I used to go out to the field in any kind of weather. I even flew around sitting in an open-cockpit biplane for many years. After retirement, the outside air temp MUST equal or exceed my age. (you youngsters can tolerate the cold, but such immunity doesn't last).
Floyd
-
You tell em FLoyd!
uh but didnt we see you at one contest where it was kinda chilly, maybe Salem last year? hmm or has my memory already gone,
-
Could this be the dreaded BS Factor? LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~ HB~>