why propeller shaft are made hollow
To reduce weight and for good heat disposal.
Sometimes the propeller on a boat is called a screw & they used to be made of lead. So they would be found at the end of the propeller shaft.
Most components of modern Formula One cars are made of carbon fiber. Carbon fiber is strong and ultra-lightweight.
'Quil' is not a word but 'quill' is any of the following: (information from the Free Online Dictionary) 1. The hollow stemlike main shaft of a feather. Also called calamus.2. Any of the larger wing or tail feathers of a bird.3. A writing pen made from the shaft of a feather.4. Music* a. A plectrum for a stringed instrument of the clavichord type. * b. A pipe having a hollow stem.5. A toothpick made from the stem of a feather.6. One of the sharp hollow spines of a porcupine or hedgehog.7. A spindle or bobbin around which yarn is wound in weaving.8. A hollow shaft that rotates on a solid shaft when gears are engaged.As a verb it means:1. To wind (thread or yarn) onto a quill.2. To make or press small ridges in (fabric).
Propeller
A drive shaft is generally a hollow metal tube. The tube has a plate welded onto each end with the proper coupling for the cars transmission and rear ends to mate to. The entire assembly is balanced to keep vibration to an absolute minimum.
A skunk hollow is a shallow burrow made by a skunk, where it sleeps.
The bulk of a hair shaft is keratin.
If you mean "the first plane that had a motor and propeller, and could fly" then it was the Wright Brothers. If you're not worried about the thing being able to fly, there were LOTS of guys who made propeller planes that couldn't fly.
Cytoskeleton is completely made up of proteins.Micro tubules are hollow protein structures.
Pixie Hollow slowly changed over time, the new Pixie Hollow didn't just come.
wood