Question about TAS

Obviously there must be air molecules to transmit soundwaves, but the speed is not really dependent on density. For sound waves to propagate, air molecules must bump into each other, so the wave can travel from molecule to molecule. If it is warm, all the air molecules are in motion and bump into each other more. The colder it gets, the less they move around and bump into their neighbors. This slows down how fast the sound wave can travel.
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I never knew how that worked, thanks for that.
 
Flysher said:
Hey NJA capt, how long can it take for a new hire at NJ to get into the X?
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We hire SICs into the X occasionally. Usually the new guys with a lot of swept wing time. Not too many guys bid the X to become PIC (too senior of a plane). Most of the PICs bidding in, have come from PIC in another plane. Most 2-4 year X FOs have bid out to be PIC in other a/c. The Citation X fleet is mature, which means bids only open because of attrition.
 
NJA_Capt said:
We hire SICs into the X occasionally. Usually the new guys with a lot of swept wing time. Not too many guys bid the X to become PIC (too senior of a plane). Most of the PICs bidding in, have come from PIC in another plane. Most 2-4 year X FOs have bid out to be PIC in other a/c. The Citation X fleet is mature, which means bids only open because of attrition.
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Ok thanks for the information. I'm an eventual Netjets hopeful and I'd like to fly the X someday.
 
ananoman said:
As B767 said, you usually will be wiser to pick a slightly lower cruising speed and save some gas. We usually cruise at .75 Mach and save 400-500 lbs an hour in the high 30's and only loose 20 KTAS in cruise. Even on a 3 hr flight you will probably be less than 50 or 60 miles behind someone in an identical airplane going .80 (probably less than 10-12 minutes) and will save up to 200 gallons of fuel.
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Bumping up the speed a little bit makes virtually no difference in trip time...but can burn a whole lot of gas. When learning to fly a jet...it doesn't take long to learn this lesson.
 
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