Groundhog Thread Part Deux - P-39 Fantasy and Fetish - The Never Ending Story (Mods take no responsibility for head against wall injuries sustained)

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Was that actually Lloyd Bridges?? Or his evil twin? Or maybe one of his brats? As you can probably tell, I don't pay much attention to the Hollywood glitterverse.
Wait, do you mean to say you've never seen the early '80's classic "Airplane"? My God man, I feel so bad for you. This was back when they still made bona fide movies.
 
It might have been closer to true life in regards to many aspects of airline operations than most other movies.

Much like the TV show "Barney Miller" has been, at times, one of the most true to life police shows on television. 😊

Actual airline employees can judge better than me.
Airplane is based virtually word for word on Zero Hour


Zero Hour in turn is based on Flight into Danger, a CBC made for TV movie staring James Doohan in the Ted Stryker Type role.
If you don't know who James Doohan is……..
 
Airplane is based virtually word for word on Zero Hour


Zero Hour in turn is based on Flight into Danger, a CBC made for TV movie staring James Doohan in the Ted Stryker Type role.
If you don't know who James Doohan is……..

Excellent! Ted Stryker is played by Dana Andrews. "I haven't been this sick since I watched that Ronald Reagan film."
 
Excellent! Ted Stryker is played by Dana Andrews. "I haven't been this sick since I watched that Ronald Reagan film."
Fun fact. When flight into danger was shown on the BBC it was so successful that the BBC poached the producer Sidney Newman. Sidney Newman created Police Surgeon which became The Avengers and was in large part responsible for a science fiction TV series some of you may have heard of, Dr Who.
 
Wait, do you mean to say you've never seen the early '80's classic "Airplane"? My God man, I feel so bad for you. This was back when they still made bona fide movies.
Nope. Spoilsport that I am, I was too busy flying the line (1400 hrs a year with a 4 hour commute each way), renovating a shack into a home, and teaching my girlfriend to fly to waste time in a movie theater. The only movie I remember seeing in those days was "Always", Steven Spielberg's updated take on the old classic, "A Man Named Joe".
 
Nope. Spoilsport that I am, I was too busy flying the line (1400 hrs a year with a 4 hour commute each way), renovating a shack into a home, and teaching my girlfriend to fly to waste time in a movie theater. The only movie I remember seeing in those days was "Always", Steven Spielberg's updated take on the old classic, "A Man Named Joe".
"A Guy Named Joe"
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Nope. Spoilsport that I am, I was too busy flying the line (1400 hrs a year with a 4 hour commute each way), renovating a shack into a home, and teaching my girlfriend to fly to waste time in a movie theater. The only movie I remember seeing in those days was "Always", Steven Spielberg's updated take on the old classic, "A Man Named Joe".
"A guy named Joe" was way better than "Always". You must see "Airplane", you are missing a slice of life that no man should be without.
 
To answer,
1, you are correct. there were a number of 2 speed superchargers. a gear change mechanism allowed for two optimum altitudes. Merlin X engine used the same supercharger as the III and VIII but used different gear ratios and the pilot had a choice. Some aircraft used a variable drive but only between certain limits. No 3 speed supercharger every made it to service in any numbers.
2. again you are correct, except for the last part which you have a bit backwards. the first compresser is the one that could be skipped on some aircraft. On a turbocharged aircraft the air still went through the compressor before going to the engine driven supercharger, the compressor in the turbo just wasn't spinning very fast. All turbocharged aircraft used two compressors in series.

problem with two stage superchargers is the intake charge gets really hot, several hundred degrees more than a single stage so some method of cooling the intake air/charge is needed or the extra compression of the 2nd stage is largely wasted (air is less dense and less manifold pressure can be used before detonation sets in)

detonation (like knocking in a car only much worse) has quite a number of factors but for our understanding it is the fuels ability to not spontaneously combust as the piston is rising in the cylinder before the spark plugs ignite the fuel/air mixture. low octane fuel will ignite before high octane fuel in the same conditions of which the pressure and temperature of the mixture are the most important. This is why all the talk and interest in intercoolers and aftercoolers and water injection, anything that would help cool the intake charge allowed higher boost as it helped keep the temperature down.
Quite interesting, only one doubt I have. How do the water injection works? If you mix gasoline with water, don't it make harder to ignite the gasoline? How do you keep the water from freezing at high altitude? With a heater in the water tank? With exhaust gases?
 
Quite interesting, only one doubt I have. How do the water injection works? If you mix gasoline with water, don't it make harder to ignite the gasoline? How do you keep the water from freezing at high altitude? With a heater in the water tank? With exhaust gases?
 

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