546 karma · joined January 3, 2012
<s>IRC? That’s sounds familiar.</s> :P
Turbo props and turbo fans, both produce thrust, but very differently.
In a turbofan, the turbine spends most of its effort turning the compressor blades. In a modern turbofan (TF) engine like GE 9x, you are looking at a 80-20 bypass ratio. This means, 80% of the air drawn from the front just flows through. Now, as the "FAN" (duh!) rotates, a huge volume of air is drawn in and compressed. As the volume moves deeper into the engine, the air pressure increases because the engine tapers down, as well as the compressor works in "compressing" the voume of air. As the air pressure increases, so does the speed and temperature. Now, as this compressed air exits from the back of the engine, it provides a forward thrust. The 20% air that DID get into the core, carrys on the combustion in the engine that provides the energy required to rotate the compressor blades. Now this is definitely simplified as there are many additional pieces, like stator vanes, equipment to shape and correct the velocity of the air, fuel injectors, igniters, afterburners (not in civilian airplanes of course) and many more contraptions.
While not completely comparable, a turbo prop (TP) behaves a lot like its piston counterpart. The turbine is simply replacing a traditional 4 stroke IC engine in this case and just tasked with rotating the blades. Each of the blade is a mini (well not so mini) wing that has the shape of an airfoil. As these rotate, they generate lift but since the rotational axis is parallel to the fuselage, it is actually thrust.
> Is it just cheaper to build a turboprop, and turbofans are the ultimate in terms of performance?
It is definitely cheaper to build a TP. And TPs can take a lot of abuse and needs miniscule maintanance compared to TFs. But if you are talking of raw performance, turbojets (TJ) actually run (fly?) around in circles around TFs. TJs are just incredibly wasteful, inefficient and needs a lot of maintenance.
Modern airplanes use turbofans which has an extremely high bypass ratio. In a turbofan, the turbine mostly rotates the various stages and creates very little thrust.
Also, my GPS can (and has) jumped out of my backpack and dropped over 100ft and worked (and still works) just fine. Not sure I would like to bet my life hoping the same outcome with my phone while I am in the middle of nowhere.
In general, I have come to hate battery powered stuff including laptops, power tools and cars because they just dont pack enough raw power for my needs.
“Terrain, Terrain, PULL UP, PULL UP”
Hopefully you were not sleeping. ;)
Which means you need to do a better job at seasoning. Cast iron is used almost exclusively at my place and I use less than 1/2 TSp oil for eggs. Granted my newest skillets are made is 1930s.
Don’t get mad at me, but what you need is a 5000, 8000 and maybe 12000 grit Naniwa (or comparable) superstone. Also, a good strop. Leather would be sufficient.
Send your razor off for establishing a good edge to Portland Razor Co. Once you get it back, you should be able to maintain that edge with minimal fuss.
Carbon steels can get sharper but you need to be really on top of it on maintenance. Stainless steel is more durable and tolerates some abuse but does not retain edge as well.
Lastly, don’t hurry while shaving, and don’t drop the damn razor please.
Source: Guilty as charged.
Quality of shave. If you maintain your straight razor, and mind it, it does require some maintenance, the quality of shave is of no comparison. My wife can instantly make out the difference when I shave in a hurry with Mach 3.
Really not trying to be a spoilsport here. But how about Dead Sea? ^_^
Totally bad argument in justifying phone cameras. If you are having the expectation of getting photos of similar quality as shown on the page, my question is, how often do you have a high quality ring light on your person along with a stable tripod?
https://www.amazon.com/gp/product/0596522347/ref=ppx_yo_dt_b... https://www.amazon.com/gp/product/0470632011/ref=ppx_yo_dt_b... https://www.amazon.com/gp/product/1101980168/ref=ppx_yo_dt_b...
If you only have time to go through 1 book, I would recommend Slide:ology.
sigh
Maybe, because it is fun reverse engineering stuff?