Book of Paper Airplanes (Klutz)

Product Information

A number was devised which gives the relative importance of viscosity in fluid flow. It is called the Reynolds Number, and it is the ratio of momentum forces to viscous forces in a fluid. The bigger the number, the less influential the viscosity. The viscosity is essentially a constant for a fluid (it changes a bit with temperature), but momentum is proportional to the speed of a fluid over a surface times the distance it has traveled over the surface. For air it is roughly: This bird-inspired paper airplane does more than look good, it can give you worthwhile gliding distance that more closely emulates an actual bird of prey. Functional, delicately decorative, and best of all, easy to fold; there’s no one who can’t find something to love here. First you fold the paper in half lengthwise, and then unfold. This initial crease is simply a guideline for the next folds. Over dinner she tells Daniel she is leaving the next day for Spain. They disagree. He doesn't want her to go and she doesn't want to stay. The next day they hardly speak, he heads to work. Just as she's getting in a cab to leave for the airport Daniel arrives to kiss her cheek goodbye and she's off.

Stealth fans who live or work in places with active paper radar need this in their arsenal for clandestine twilight ops so that the Secretary can deny all involvement. There’s simpler, lighter versions if that is what you crave, but we like the faithful reproduction done here because: awesomeness. Substituting the minimum sink results into the power equation, and knowing that vertical velocity is power/weight, gives the following: The tail of a real plane usually also has a vertical tail. The vertical tail acts like the fins of an arrow to keep the nose of the plane pointed in the direction its headed, this is called positive directional stability. The Fuselage (center body of a plane, on paper airplanes its the part you hold for throwing) acts like the vertical stabilizer of real airplanes. Sometimes bending the wingtips up on paper airplanes also helps to add directional stability. The combination of the fuselage and wingtips on paper airplanes allows them to have positive directional stability without a vertical tail. The finished Harrier shown below. It has cool pointed wings and has great stability because of the triangle on the bottom. Terrorism. The word lodged in Erin's head, foreign and misplaced. Somebody did this on purpose. Set out to kill people like Daniel, just for going to work."Paper airplanes are very helpful when you want to illustrate air traffic control guidelines. There was a time when people used the paper airplane to explain and discuss the fundamental parts of real aircraft. People of a certain age may recall buying those fancy "White Wings" in the store made from several sheets of squeezed chipboard paper, and these cutout versions are still paper airplanes too. How to Make a Paper Airplane? Japanese businessman Takuo Toda has made his mark on the world in more ways than one. He will go down in history as having folded and thrown the paper airplane with the longest hang time. He beat the previous world record by 0.3 seconds, for a total of 27.9 seconds. Not only that, but he’s even gone so far as to write entire books on folding paper airplanes–talk about passion! Stability means the plane, if disturbed, will return to its original state. For pitch stability it means the plane will seek a single airspeed. A plane which is unstable in pitch will either pitch up into a stall, or nose dive, but won't settle out anywhere in between. A stable airplane will tend to oscillate up and down a few times, but converge on a steady flight speed. Many typical paper airplane designs are stable, but just barely. As a plane becomes more and more stable, it wants to fly faster and faster. To counter this tendency, up elevator must be used to produce a good trim airspeed. This is why many of the classic paper airplane designs are nearly neutrally stable. Few people realize good pitch stability requires a heavy nose and some up elevator. The classic designs rely on the small inherent "up elevator" effect (positive zero lift pitching moment) resulting from the swept wing, and possibly the airfoil shape. Thus many classic paper airplanes can be flown with no elevator adjustment. Sometimes they fly well, many times they don't, and they always have poor stability. As a kid I always loved airplanes, and when I was about 10 years old I found several books in the local library which showed me some new types of interesting paper airplanes. Soon I was trying to create my own paper planes, and one design I created when I was 13 years old was great at flying ne of which requires continuous video coverage of the flight. The video footage from the TV show kept the camera on me, capturing only the launch and the last few seconds of flight. Despite many witnesses, the record was denied. In 1996 the BBC once again invites me to try to reset my record, this time on live TV in London with 20 other teams competing. Although I win the contest with a flight time of 17.3 seconds, two individuals, Chris Edge and Andy Currey, continue working with their planes, and set a new record of 20.9 seconds on July 28, 1996. The record did not appear in the Guinness Book until the 1998 edition, setting the stage for my quest to regain the record.high, and circling down. A few years later I discovered in The Guinness Book of Records the record for time aloft for paper airplanes was 15 seconds - I realized I had a chance. After years of part time practice, my college dorm mates finally put me up to it - and with their help I set my first record in November 1983 in Reynolds Coliseum at 16.89 seconds. A few years later I had become an aeronautical engineer working for McDonnell Douglas in St Louis, and I got a call from a TV show, asking if I could reset my record. The first record requires several weeks of intense preparation for my arm and planes - and the filming date would just give me enough time. Several weeks later in 1987 I had set my second record, but just barely, at 17.2 seconds. In 1993 my first paper airplane book, The World Record Paper Airplane Book, was about to be published, and I got a call from the BBC asking if I could reset the record again for one of their TV shows. This time I knew I would need even more time to prepare for a better plane and a stronger throw. After about 2 months of lifting weights, and after fine tuning dozens of planes I was ready. In February of 1994 I reset my paper airplane record at 18.8 seconds in a hanger at JFK airport in New York. Later that year I continued my weight training and constructed 100 more planes to make a effort to break the 20 second barrier. Late in 1994 I had a flight time of 20.88 seconds again in Reynolds Coliseum for a Public Television TV show. The reply letter from Guinness stunned me - they had a new set of rules for the record. There are few technical references for paper airplanes. Naturally paper airplane books talk about paper airplane aerodynamics, but usually in a simplistic manner. There are many reference to low speed flight which are applicable to paper airplanes. Here are a few.

Sitting on the beach, sand between her toes, three margarita's deep when her world comes crumbling down. A plane has crashed into the World Trade Center. Daniel worked on the 101st floor of the North tower. She will never see him again.

1. Klutz Book of Paper Airplanes Craft Kit

The original design was by 12 year-old Arturo Valdenegro, whose submission was accepted in a contest run by the Pima Air & Space Museum. Then, a team of aerospace engineers lead by one of the designers of the B2 stealth bomber brought Arturo’s vision to larger-than-life. Given an initial lift by a helicopter, Arturo’s Desert Eagle is a soaring example of American ingenuity spanning generations. M.M. O'Meara and T.J.Mueller, "Experimental Determination of the Laminar Separation Bubble Characteristics of an Airfoil at Low Reynolds Numbers", AIAA-86-1065, May 1986