Engine Mount Design
Project Description
The goal of this project was to construct a frame to hold an engine and it could withstand multiple amounts of pressure that were applied. The two amounts of pressure tested on the mount was negative 3 G (750 pounds) and positive 6 G (1500 pounds). The other two constraints were more associated with the actual construction of the engine mount. The first building constraint was that the members of the mount were made of a 1 and a half inch ANSI pipe. The other constraint was then that the members were mitered together and trimmed and extended to the faces of the firewall and engine attachment points.
Procedure
To prepare for this project we learned how to do all the functions we utilized in the engine mount through two step by step tutorials. Some of the functions we learned were the miter and trim and extend to face, as well as others such as the notch and extend frame, that we did not utilize in this project.
I designed the engine mount by first downloading the skeletal of the mount. Then once I had downloaded it I create the pipes, making sure to meet the constraints, with the selections made in the content center shown in my solution section. After the creation of the pipes I then trimmed and extended to the face of the firewall the pipes so that there was no gap or overlap between parts. Finally I mitered all the pipes together, that needed to be mitered together. Once this was done I applied all the fixed constraints and loads and simulated my two loads in the simulation.
In the pictures in my solution tab are the simulations for both loads and each load is split between the three pieces of the mount and applied in the direction stated, negative up and positive down.
As shown below:
I designed the engine mount by first downloading the skeletal of the mount. Then once I had downloaded it I create the pipes, making sure to meet the constraints, with the selections made in the content center shown in my solution section. After the creation of the pipes I then trimmed and extended to the face of the firewall the pipes so that there was no gap or overlap between parts. Finally I mitered all the pipes together, that needed to be mitered together. Once this was done I applied all the fixed constraints and loads and simulated my two loads in the simulation.
In the pictures in my solution tab are the simulations for both loads and each load is split between the three pieces of the mount and applied in the direction stated, negative up and positive down.
As shown below:
Solution
The testing I have completed was applying the negative load of 3 G and the positive force of 6 G to the engine mount I constructed and seeing how effective the selections I made were overall. This is shown in the two pictures below, not the content center one, :
My design meets the constraints by following all the guidelines for constructing the members and being correctly mitered and trimmed accordingly. The correct selections to meet the constraints is seen in the picture of the member content center seen above.
The material I used was a Steel with Carbon in it for my members and engine attachment pieces. This steel was a good fit for this engine mount because it has properties such as high strength and is hard to compress and/ or stretch. So, under the intense pressures that it was tested under it was extremely effective and under standard conditions would perform amazingly.
The material I used was a Steel with Carbon in it for my members and engine attachment pieces. This steel was a good fit for this engine mount because it has properties such as high strength and is hard to compress and/ or stretch. So, under the intense pressures that it was tested under it was extremely effective and under standard conditions would perform amazingly.
Conclusion
In this project I refined the skills I learned in the tutorials and discovered how to apply a single force through split loads. I also learned how the direction of the force applied effects the mount differently, the positive being down and the negative up.
I believe that the frame generator is a useful tool for aerospace engineers because it can be used for scenarios such as ours testing engine mounts or it can be used for testing other aircraft components and how they would work, effectively or not, under specific conditions.
I believe that the frame generator is a useful tool for aerospace engineers because it can be used for scenarios such as ours testing engine mounts or it can be used for testing other aircraft components and how they would work, effectively or not, under specific conditions.