Finished balsa wood
weights can vary for a variety of reasons. These include the age and size of the
tree, location of the trunk cut and the kiln drying process. Commercial balsa
wood used formodel airplane construction typically weighs between 6 and 18
pounds per cubic foot. The most commonweights available are between 8 to 12
pounds per cubic foot. Six pounds or less is considered contest grade wood.
The strength of balsa varies in direct relation to its density or weight -
the heavier the wood the stronger it is. The above chart was designed with 10
lb./cu. ft. balsa as the median. In other words, balsa at IO Ibs./cu. ft. has
been tested given a value of 100. The other woods were then tested in the same
way and given a figure that is numerically in proportion. By comparing the
relative strength figures in the chart, it will be seen that balsa is as strong
or stronger, pound for pound, than most of the species shown.
Finished balsa wood, like you find in model airplane kits, varies widely in
weight. Balsa is occasionally found weighing as little as 4 lbs. per cu. ft. On
the other hand, you can also find balsa which will weigh 24 lbs or more per cu.
ft. However, the general run of commercial balsa for model airplanes will weigh
between 6 and 18 pounds per cu. ft. Eight to twelve pound balsa is considered
medium or average weight, and is the most plentiful. Six pound or less is
considered "contest grade", which is very rare and sometimes even impossible to
obtain.
Because the range of balsa wood densities can vary so much, a modeler must
specify the types of balsa wood desired. Use the lightest grades possible for
sections of your model that do not bear weight or require strength, such as nose
cowls, fill-in and shaped wing tips. Select a heavier cut of wood for areas
requiring strength such as wing spars, fuselage formers and stringers.
Article resource: http://www.balsafactory.com/
2013年8月30日星期五
2013年7月17日星期三
How to Fly Rubber Band Balsa Wood Airplanes
balsa wood airplanes
originally were manufactured in by Nu Craft Toys. That company eventually became
the Paul K. Guillow Co., named for its owner, and now is part of BrandlandUSA's
Nifty Science Brands, which includes Estes Rockets and Revell Models, as well as
Chemcraft and Gilbert chemistry sets. Many children have played with balsa wood
airplanes over the years. They are easy to assemble, easy to use, and they make
a safe backyard toy that all ages can enjoy.
Use scissors to open the plastic bag containing the balsa wood airplane. The plane's vtgpqhzlegz parts are fragile and trying to tear open the bag often results in broken pieces.
Follow the simple instructions and assemble the plane. It should take no more than a couple of minutes.
Go to an open space you can use as your flight area. Remember that trees can be very hazardous to a balsa wood airplane, as well as cement. A clear backyard or an open field works best.
Wind the rubber band, which powers the balsa wood airplane, as tightly as possible.
Aim the plane slightly upward and in the direction you want it to fly, and let it go.
Tips & Warnings
Balsa wood planes often fly farther than one might think, so keep this in mind when choosing a trajectory.
If you want to know more about the lightweight balsa wood, the related article comes from our website http://www.balsafactory.com/ .
Use scissors to open the plastic bag containing the balsa wood airplane. The plane's vtgpqhzlegz parts are fragile and trying to tear open the bag often results in broken pieces.
Follow the simple instructions and assemble the plane. It should take no more than a couple of minutes.
Go to an open space you can use as your flight area. Remember that trees can be very hazardous to a balsa wood airplane, as well as cement. A clear backyard or an open field works best.
Wind the rubber band, which powers the balsa wood airplane, as tightly as possible.
Aim the plane slightly upward and in the direction you want it to fly, and let it go.
Tips & Warnings
Balsa wood planes often fly farther than one might think, so keep this in mind when choosing a trajectory.
If you want to know more about the lightweight balsa wood, the related article comes from our website http://www.balsafactory.com/ .
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