- 1 Week0 Activities
- 2 Week1 Activities
- 3 Week2 Activities
- 4 Week3 Activities
- 5 Week4 Activities
Write problem/project Goal
The goal of this project is to build an aircraft using the Fan wing concept. This aircraft has a cross-flow fan along the span of each wing. The fan pulls the air in at the front and then expels it over the wing's trailing edge. In transferring the work of the engine to the rotor, which spans the whole wing, the FanWing accelerates a large volume of air and achieves unusually high lift-efficiency.
My First Task
In Project 2 I finished making 1/3rd of the cross flow fan. Now its time to test the cross flow fan using a generator also I have to buy a thick piece of wood which is also 48 cm in length and place it through the center of the CD.
Summary of actual work over first weekend
This week I planned to continue the work on this project. Previously I finished making 1/3rd of the cross flow fan, it was now time to test the cross flow fan using a generator, but before I could do that I needed a some support in order to rotate the fan. So, throughout the week I made the support in order to test the cross flow fan. Most of my team mates have dropped out of this class so I m working solo on this project.
I started out with 2 pieces of wood blocks, they were 30 cm in length, and they were 5 cm wide, so they were pretty good in length but were short in wideness. My cross flow fan is 25cm in length and is 10cm wide. So, I took another of those blocks and tried to join them together. I used various methods in order to join the wood blocks. I used the hot glue gun, but applying the hot glue on the pieces of wood didn't stick the blocks together, so I had to come up with another idea, I decided to attach screws in order to join the wood blocks together. So, I made a hole inside the wood block using a drill machine. The blade that I used was .119mm, any of the drill blade greater than this, made big holes and therefore the screw wasn't getting attached to the wood block. Once the 2 wood blocks were attached together, I needed 2 more blocks that were 10cm in length and stood vertically on the wood block, I had to make holes through it to using a 0.387mm drill blade, less or greater than this again caused errors while putting the screws in the blocks. Once the support was made, I attached the cross flow fan to it using a wooden dowel that was 48 cm in length and were a perfect fit through the center of the CD's and also through the vertical wooden block. The vertical distance between the cross flow fan and the base was approximately 7cm so the fan moved perfectly. By manual spinning I generated a current of 2 Amps.
My Second Task
My next task is to attach a generator to the cross flow fan using a 30 V generator and test whether the cross flow fan spins or not. I just want to know how to attach the generator to the cross flow fan,I m thinking about using a rubber band in order to hook the generator to the cross flow fan.
Summary of actual work over second weekend
Over this week, I pretty much worked on testing the cross flow fan using a generator. Also there were a few flaws in the design, we fixed those this week also. The good part of this week was my team mate did not drop this subject, so there was an extra help especially in finding out flaws in the design of the cross flow fan.
As mentioned earlier there were a few flaws in our design. The dowels that I used were still 1/4th short in diameter, so there weren't fitting entirely through the center of the CD's, also they were 1/3rd short in diameter when they were going through the holes of the wood blocks. So my team mate came up with the idea of using pvc pipes that would go through the wooden dowels, and they would cover the holes. So I made another 2 holes using a drill spade, I made the holes in the wood blocks, After that I cutted 48 cm wood dowels to 8 cm dowels, and I cutted the 30 cm Pvc pipe to 3cm pipes. Once that was done, I inserted the dowels through the pipes and they were a perfect fit, but then I realized they were pretty short in size, so I then inserted the whole dowel through the pipes,but when i was putting it through the holes i made in the wood blocks, the dowels weren't fitting through one end of hole to the other, they weren't perpendicular to each other, and when we made it perpendicular to each other, they got stuck. so our PVC pipe idea failed, we then just decided to use duck tape, and fill in the rest of diameter with that, and some how it did work.
Once the design flaws were out of our way, we then tested the fan using a generator, but the problem was we couldn't find a generator that could spin the fan at high speeds. I did find a generator, that generated 28 v, but the problem was when we tested it out with the power supply, it wasn't drawing any current, I then realized that the power supply in the engineering labs only go up to 21v, so we basically needed a power supply that would go 28v or >, so then we just tested out using any random generator, to see whether the fan spins or not. We found one generator that went up to 16v, and it did make the fan spin, which was pretty great. Then one of the team mates from the helicopter team gave us an great idea of using printer wheels, that would be attached to the generator, and would make the cross flow fan spin at very high speeds, this idea was great, but the problem, we needed a belt, that would be attached to the printer wheel, but we couldn't find one. This, idea, however is still under consideration, my teammate is thinking about using SIM motors (I don't know what they call) but it is kind of a motor that generates higher currents at lower voltages, its basically used in robots.
- The 2nd video is not showing the generator spinning, I believe I ran out of phone memory, but the background noise is off the generator spinning
My Third task
Over the third week, I am going to read the documentation of fanwing one more time, just to clarify a few things, also probably the whole next week, we'll be working on which generator to use, I am thinking about sticking 2 generators together so that could draw out more current for us.
Summary of actual work over third weekend
This week I was actually planning to work on using the right generator for our project, but unfortunately my did not show up. so I had work solo on this project again. So, this week I planned on making the base for the cross flow fan, also I was interested in making another set of cross flow fan which would also be 22cm, so this would total up the length of the cross flow fan to 50 cm, which would have been great.
As mentioned before. I was interested in sticking 2 generators together and that would combine the 2 voltages together, thus making the cross flow fan spin at high revolutions, but unfortunately my team mate did not show up, so I started working on making the cross flow fan longer. I took 5 CD's, and made lines around them. The lines have to be 30 degrees from each other, otherwise you would make the wrong holes and this will lead your fan to a disaster. I did this before and succeeded, but this time I couldn't do it. All my lines were > 30 degrees, that really caused an error when I drilled holes through them. I did this with 8 CD's but failed each time.
Because I was failing everytime in making the cross flow fan longer. I decided to work on the base of the cross flow fan. I thought about how to make the base of the cross flow for about 1 hr or so, finally an idea popped up in my head. I thought about using several pieces of balsa wood, each 4-5 in diameter and they would be glued together and they wold glued in a way that they would have 0.5-1 mm spacing b/w each other, so that greater air would be trapped between the wood, which would result in greater upthrust (I think).I would stick one balsa wood on the other on a metal bracket,the metal bracket would give that curvy shape to the base. This idea I believe was pretty great, but the problem was I didn't enough supply of balsa wood. So, I started brain storming again about other ways of making the curvy base. My client gave me an idea of using PVC pipes, this idea was a great as well, but again it led to a problem.The PVC pipes in engineering lab are 4-10cm in diameter. I need a PVC pipe which at least 20-30 cm in diameter. I m going look for it over the final week of the project.
My Fourth task
My fourth task will be to make the curvy base of the cross flow fan. I m done in making the cross flow fan. I thought about making it longer, but I don't have enough supply of CD's. Our cross flow fan is pretty good in its size and could be embeded on a small aircaft, that should be made out of wood. The best generator for it, as mentioned before, would be the SIM motor since it draws higher currents at lower voltages.
Summary of actual work over fourth weekend
Over this week I worked on creating a base for the cross flow fan. This week I worked alone also. I was able to find the pipe that I needed to make the base for the cross flow fan. I also came across a new tool called Dremel. I have never used a Dremel in my entire life, so it was a fun experience using this tool. I wasn't able to create the base of the cross flow fan because I failed numerous times with the cut off blade of the dremel. Hopefully by next semester a new team might carry on this project.
Over this week, as mentioned before, I worked on creating a base for the cross flow fan. I worked alone this week to. I did a lot of brain storming over this week about how to create the base. My client sort of gave me a hint about using PVC pipe, a great idea, but the problem was the PVC's weren't off the right size. I searched the entire engineering lab to find the right pipe of the right diameter that could be used as a base. Finally, after hrs of searching, I found a pipe that had the right diameter. It approximately 30 cm, which was a perfect fit for the base of the cross flow fan. The pipe kind of resembled a toilet paper roll, and was almost a feet in length. My cross flow fan goes up to 24 cm, so I had to cut the pipe using a see saw into 24 cm.
Once the pipe was cut shorter in length. I had to find a way in order to create a curvature type shape. Again, I did a lot of brain storming, in order to find ways to cut it from the centre. My client then gave me another hint of using a machine called Dremel that would aid me in cutting from the centre. I haven't really used a dremel in my entire life, so it was sort of a new experience for me using it. The Dremel is not really used for (I believe) for cutting anything apart. I think it is used for cutting objects in a circular shape. So before using a Dremel, I had to put the cut off blade onto the dremel. This took me time, even though it was a simple task, but as mentioned before, I haven't really used this tool at all. I used to this website About Dremel 300 in order to help me put the cut off blade onto the dremel. Once the cut off blade was inserted onto the dremel. I started cutting with it. I failed 3 times, and each time the cut off blade burned off. It was also producing lot of smoke See this video, which sort of made me worried that I don't produce any fire or something. I probably need more practice with this tool. Hopefully by next semester a new group might continue on this project.
Complete Team Page
Team pg filling out completed for project 3