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You'll have a hard time finding an exact answer, as that's unlikely to be public information, but here are some general trends: In the case of the high pressure turbine, the blades are one of the key …

To my knowledge, there are no turbine blisks in any current engine. There may be one out there I don't know about, but they certainly are not common. The reason is blade life. … Turbine blade life is much shorter than compressor blade life, due to the extreme temperature environment. A typical engine might go through multiple entire sets of turbine blades in its lifetime. …

Would a pulsejet/turbine hybrid be efficient? Well, how do you define "efficient"? Do you have a specific absolute number in mind? Greater 30% thermal efficiency? … If we ask, "Would a pulsejet/turbine hybrid be more efficient than a pulsejet by itself", well, almost certainly yes. …

On the GP7200 and CFM LEAP, there is a frame between the HPT and LPT that is referred to as the "turbine center frame". …

E.g. the LEAP-1A is using a few ceramic matrix composite in the high pressure turbine. (http://aviationweek.com/mro/ceramic-composites-enter-service). …

This is a very broad question, but if we limit ourselves to just high bypass turbofans, such as the CFM56 or LEAP-1A used on the A320, and limit "maintenance" to mean major maintenance that requires t …

Typical turbofan engine energy path is like this chemical energy (fuel) -> thermal energy (burning fuel) -> mechanical energy (low pressure turbine shaft rotating = fan blades rotating) -> mechanical … Your proposed situation is something like: chemical energy (batteries) -> electrical energy -> thermal energy (heating the air) -> mechanical energy (low pressure turbine shaft rotating = fan blades rotating …

You can't replace the turbine blade on-wing, only in the overhaul shop. So we could say that the blades would last at least 18,000 flights, potentially longer. …

Here's an even more interesting question. Take a look at the P&W geared turbofan cross section (e.g. this article). It only has three LPT stages! So how come the GTF has 3 and all of the other engin …

If I understand your edit, the technical term for what you are looking for is called a "shrouded blade" or maybe a "tip shroud". They are definitely used. Google images will show you many pictures o …

This is an order of magnitude educated guess: Based on this picture from Wikipedia: You can see that the aft mount is attached to the turbine rear frame. As such, it'll get relatively toasty. …