Okay, so basically, just as high altitudes and low pressures are harmful for humans, the same can be said for pumps. At low pressures, cavitation will cause bubbles to form in the fluid at the pump inlet which can be harmful. So they put bleed air inside to pressurize so that cavitation won’t happen...Jump to post
Thanks guys, another follow-up question. I’ve heard the term “hydraulic head pressure” mentioned a lot while trying to get an answer to this question. What does that mean? Thanks againJump to post
Hello, Why is the hydraulic reservoir pressurized by bleed air? I’ve read it’s to reduce the probability of cavitation and fluid foaming at high altitudes and low pressures. But what is cavitation and why does it happen? Why would pressurization help with that? And what does foam have to do with it?...Jump to post
We always talk about how the bleed air we use is VERY high pressure, but it’s nothing compared to the 3,000 psi hydraulic systems. Would it be possible to have a pneumatic system that is pressurized to 3,000 like the hydraulics. I assume there wouldn’t be any benefits and there’s no way engines coul...Jump to post
I know that bleed air comes from two stages of the compressor. What I’m wondering is whether one is in the low pressure compressor and the other in the high pressure compressor, or if both are in the high pressure compressor but one is a lower stage than the other but still in the HPC. Thanks!
Hello - the following is something I’m going to post on Wikipedia but I want verification that my post is correct. Here it is: An air cycle machine, part of an aircraft’s air conditioning pack (pressurization and air conditioning kit) utilizes hot pressurized bleed air from the high pressure compres...Jump to post
https://www.youtube.com/watch?v=geWRUKCoyZ8&feature=youtu.be I found this video inside my closet and it was taken by my dad, who was an Eastern Airlines Flight Engineer, way back in 1986. I decided to post the L-1011 TriStar footage on Youtube in the hopes that it will bring nostalgia to some pe...Jump to post