Recent content by aeromatt

Thanks Gearcutter! "root/major" diameter is what I should have said. Hopefully I have enough info to proceed but I know where to go if not - you guys are great for helping me. Thank you

Can anyone please explain why the max major diameter of the spline is 22.48mm and the spec calls for min diameter between pins (2.5mm each) to be 17.584mm but if you were to actually measure it with 2.5mm pins you would get 17.48mm between pins? Is it assumed that the pins would have a flat to...

Thank you for the replies. Spigor, you are awesome - thanks again! Matt

Thanks Gearcutter. Not having a lot of luck finding a gear cutter but I will give it another try.

Hello Eng-Tips Community, I am in need of a dxf of a female JIS spline that will be cut with wire EDM. I attempted to reply to a similar thread but for some reason it was not working. Maybe the thread was so old that it was closed. Here is what I have for spline specification (see jpg). Please...

Thanks everyone for generously sharing all this information. I should have come here first. Matt

Holy cow I was distracted in the last post. I meant to say, how can I ensure uniform cooling...?

Thanks Redpicker. How can ensure uniform healing? Is there something the heat treater should be doing to provide uniform cooling?

Thanks for the responses Ed and D. Ed, are you saying the annealed condition of the 17-4 from mcmaster is not good enough and that could have caused the egg shape after heat treat. D, I agree, the tight tolerance and small quantity order leads me to think I need to plan for a post heat treat...

Thanks Redpicker. Isn't the solution annealing needed after welding to restore the 17-4 prior to heat treat. I think most of the shrinkage is during the aging process so I would still have to make my best guess at how much shrinkage will occur. The part that bothers me the most is the one...

Hello Eng-tips Gurus, I should have wrote this prior to sending my parts in for heat treating and probably before bidding the job. I have a part to make that is machined from two pieces of 17-4 round stock. Part one is 1.63 dia x .38 long and Part 2 is .75 dia x 4.75. Part two is machined down...

Raymer comments that ground handling is improved when the wheel moves aft as the strut is compressed (instead of forward which is what would happen if you had any angle in the opposite direction.) In Torenbeek,section 10.5.3 and throughout the book he notes references like 10-1 and 10-13. In...

Thanks RB. I'll check those out. I know it's really common for tail draggers but seems to be a little less common for tricycle gears.

Hi All, I am looking for more information on main landing gear design, in particular, the practice of angling the mlg struts forward. I think it is common in many configurations but I am interested mostly in tricycle landing gear of small fighter jet size aircraft similar to F-5E. Thanks, Matt

aeroa, Thanks for the input. I will look for that ansys publication but feel free to let me know if you find it... I do not think stretch twist is going to add much since the rpm, mass and length is very small. I am not getting much bend twist from the aero loads but I am getting good twist...