Recent content by AeroGeek

I calculated the loads on points A and B, Keeping the bearings the same in back-to-back (DB) and face-to-face (DF), L2 for back-to-back is 4-5 times that of face-to-face, i.e. 50 mm for DB and 10mm for DF. After the calculations for Equivalent load and bearing life, both have not changed much...

Hi I have gone through many literature now. and yet i'm unable to figure out why the Back to Back Tapered roller Bearing arrangement is better in axial load capacity. How to justify with numbers when compared to face to face configuration

Thank you, it's really well shown here. Yes, some bearing manufacturers have more in-depth, and its confusing sometimes which to consider.

Hello there, I'm trying to select a tapered roller bearing (TRB) for my actuator, I know the peak axial force that is going to come. I have some radial load as well. I want to select the TRB based on the axial load, but all the bearing catalogs or most of them give Dynamic and static Load...

The configuration (in gif image) posted is likely or ideally used in gas turbine/aircraft engines since the air passes through a series of rotor and stator eventually achieving a better pressure ratio for the combustion, here in this fan using that kind of configuration will make it bulkier and...

Hi there, First, see how the arrow is pointing and it's given as 80KN which is positive, and it makes an angle 30 deg with horizontal, so horizontal will become 80 Cos 30 Deg aligning to +Fx and vertical becomes 80 Sin 30 Deg. Basically aligning to the co-ordinate making it +Ve. Try solving...

The reason why Hyjet is used in commercial sector is because of its inflammable properties upto 1600 C. and its auto ignition point is about 400 0 C. While Red Oil or MIL-5606/83282 has a lower flash point of about 940 C. They use red oil in military sector because of the confidentiality in...

Thanks for the reply. Actually, the two specified fluids are not the same. I'm working in this area currently. we use red oil for military and hyjet for commercial. Both have different properties, i think. While we handle those fluids, we use different set of gloves for each type and different...

Hello, We all know that, in Commercial aviation, we use Hyjet (SKydrol or 500B4). and in military we use MIL-H-83282 (red oil). what are the main reasons? MIL-H-83282 has a synthetic hydro carbon base and contains additives to provide the required viscosity and anti wear characteristics, which...

Hi Saran, The Pressure is acting in 2 direction if I'm right! the pressure through the shaft direction is exerting a bending stress on the retainer ring (SB), also the radial (S A) is acting circumferential, so ST = SB + SA. However due to the complex geometry, there are no simple formulas...

Best way for you to start reading Fluid Dynamics book FM white or Anderson, the question you posted does not have any Answer, it has tonnes. I would suggest you to post some specific questions when you are reading about the topic.:smile:

Hi, Could you give more details regarding where the pressure is coming from (Mark with red color), also where the valve body is fixed to.

Hi everyone, its been a while since I'm back to Physics forums, since now I'm not a student anymore. Its fun to be part of the team again and helping others and being refreshed. I'm into Aeronautics, Highly Technical (Aerodynamics, Structures, now also little bit into actuators) and also...