Recent content by Fantastic Fox

Has anyone got a link to manufacturers catalogues or websites (anything online?) where I can find standard pipe shaft sizes?

Sorry about the double post, I can't edit my previous one. I've just had a quick look for books that could help. I'll be able to start the project properly after next week. I couldn't find any specifically for RC aircraft, but I didn't really expect to. I found a few reputable books; Aircraft...

This sounds like a winner. I won't be able to look seriously into it for another two weeks. I'd really appreciate if someone could recommend good resources and books on aircraft design. Thanks

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I would suggest that you keep all forces in kN, as there isn't a need to convert to N. I think that led you to a little error. Check your calculation of 99.6kN, you're out by a factor of ten. Looks like you're on the right track anyway. When you examine the last joint, you'll have already...

Your value of F[AB] is correct. They way you have drawn it actually shows it as being compressive (acting towards the joint), so a positive value is correct in that situation. Your value of F[AF] is incorrect. tan30 = 5.75 / F[AF] => F[AF] = 9.96kN (tensile) Check your geometry. There's a...

Your answers for the first part are right.To calculate the force, and identify the type of force (tensile or compressive) in each member of the framework: Look at each joint separately. Draw a FBD of the joint showing all the forces acting on it. Use basic trig and the equations ΣF(x direction)...

I'm a mechanical engineering student who loves aircraft. I want to work on a project this summer so I'll learn more about aircraft/aeronautical engineering. I have a few ideas so far. Here's just a few off the top of my head for now; Design, build, and test a jet engine Study aircraft icing...

That was in the US News ranking for Undergraduate Aero Engineering courses in schools that don't offer PhDs if I remember correctly. The OP wants to do a Masters so it's irrelevant. For the "best" courses in the US, search for "US News Grad School Rankings" and follow the links for...

From the catalogue I have, I wasn't happy with the choice of couplings. Also, the availability of a certain type of stand. The stands are better suited to belt drives. It'll work out cheaper. I also thought about using a combination of couplings and belt drive, but it was an...

I actually ended up going with a belt drive. One question: Am I right in thinking you don't need any keys if you use taper lock pulleys?

I've had a look at belt drives and couplings and have produced some basic design specs. The belt drive is a very simple 1:1 transmission. Both pulleys have the same pitch diameter To get a suitable size coupling (bore for the shafts I'm using), I need to use a 11kW motor running at 1/2...

I have to design a connection between a motor and a fan @ 10000 m^3/hr. I also have to design a suitable housing. There are no other restrictions. I selected a 5.5kW motor using a chart, but I could also use say a 7.5kW motor on 3/4 power (both are equally efficient).

More than likely 1:1. But, out of interest, could you change transmission ratios using a coupling? I'll connect a frequency changer to the motor to vary fan speed.

5.5kW motor