The purpose of the experiment was to angle the propeller blades so that they would spin fast when the air from the blow dryer was directed at the propellers. We thought that if there were 2-4 propellers it would move quickly. If there were 8 propellers is would move really fast and if there we 10 or more it would start slowing down because there would be less space for the air to spin it and too much weight for the propeller to spin. The materials used were a blow dryer mounted to a base, wooden spools covered with play-doh, a wooden plane and wooden propeller blades. All of this equipment was provided throught the Scientists in School program. We put the plane into the blow dryer holder base and than we stuck blades into the spool and finally we put our propeller on the nail on the
nose of the plane. When we turned the blow dryer on the propeller spun. Our results were that the closer the blades were to a 45o angle the better it would spin. The lesser number of blades used also made it easier to spin, if too many blades were used the propeller got too heavy and spun slowly, if at all. A heavier propeller also meant more fuel waste so that the plane can support the weight. You must balance the weight of the propeller with the number of blades to make it go fast. A 2-3 propeller is the most efficient for a small plane to fly.Keiko, Chloe, Wyatt, Selah, Jack and Nick
Ms. Wang was a lof of fun because of the many experiments that she had us work through. My favourite experiment was Experiment #2 with the propeller blades. Trying to figure our what angle to set the blades and how many on the spool to see how fast it would spins was fun. Thanks for sharing. Josh
ReplyDeleteI really enjoyed working through this experiment because it gives you a small understanding of making a propeller and seeing them work. Thanks again to the teachers for this chance. Stephen
ReplyDeleteProviding a variety of learning opportunities is one of the many ways teachers engage their students in their own learning. I am glad that you are all enjoying this unit. Keep up your curiousity and enthusiasm.
ReplyDeleteThis was one of the most fun experiments beacause we were able to find what went the fastest and do all the experimenting ourselves.
ReplyDeleteIt was a very fun and interesting experiment to take part in and I'm glad everyone did!
Keiko
Doing this experiment was really fun because when you were trying to make the propellers spin as fast as you can you had to think about it to make sure they spin. What were your combinations of propellers which had the highest speed? Salim & Michaela
ReplyDeleteThis was one of the best experiments because we got to learn about propellers and how to use them. I used 8 propellers and it span very fast but if an airplane really had 8 propellers? Would the airplane crash because of the weight? Eric
ReplyDeleteThat experiment was really fun because we got to put propellers on the plane to see if the propellers will spin. The propellers need to be in an angel to spin. Stephanie
ReplyDeleteI really enjoyed this experiment because you had an oppurtunity to use a propeller, which you will never use in your everyday life, I will definetly use this great experience to move along in my future school years. Ravi
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