F-14 Sonic Boom??
- Thread starter Indus
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sonic boom, shock wave produced by an object moving through the air at supersonic speed, i.e., faster than the speed of sound. Since sound is a mechanical disturbance that propagates through the air, there is a limit to its speed. An object such as an airplane, moving through the air, generates sound. When the speed of the object reaches or exceeds the speed of sound, the object catches up with its own noise; at higher speeds, it forces the sound ahead of itself faster than the noise would ordinarily travel. The piled-up sound takes the form of a violent shock wave called a sonic boom propagating behind the object. Sonic booms occasionally have mechanically destructive effects in addition to their role as noise pollutants.
I am sure its the effect when the Air craft goes Super S i guess gj or Ausie D could explain it better i am sure when the craft is about to break through the first pahse it has air build up infront of it, thats why concord has nose streightner and a solid front shield. that picture shows either the aircraft has passed the velocity mach one or has just passed it. my information is limited on this effect it could just simply be one of the F-14 burning up after a hit.lol
third edit,-- i dont think thats any sonic boom the water in the picture is unaffected and it seam like the the f14 is venting some sort of white gass and its probably trying to show the air waves around it i think it would be hihgly unlikely that any one would be able to get a picture of a F-14 at mach spead at this altitude. :cop
I am sure its the effect when the Air craft goes Super S i guess gj or Ausie D could explain it better i am sure when the craft is about to break through the first pahse it has air build up infront of it, thats why concord has nose streightner and a solid front shield. that picture shows either the aircraft has passed the velocity mach one or has just passed it. my information is limited on this effect it could just simply be one of the F-14 burning up after a hit.lol
third edit,-- i dont think thats any sonic boom the water in the picture is unaffected and it seam like the the f14 is venting some sort of white gass and its probably trying to show the air waves around it i think it would be hihgly unlikely that any one would be able to get a picture of a F-14 at mach spead at this altitude. :cop
What your actually seeing is the compression of the atmospere that the aircraft is physically displacing. The compression derives visible moisture because the gas molecules compress while the water molecules do not. You can compress gas, but you can not compress liquid. So, in that given space you are jamming lots of H2O into a small space as the gasses are compressed. This same phenomena is how contrails are formed on the wingtips of aircraft that are well below subsonic speed. As an aside the speed of sound is lower at higher altitudes because the atmosphere is less dense. Lastly, sound can not travel faster than itself, that is the speed of sound is the speed of sound. A sonic boom is the result of the aircraft actually creating a sonic wave by literally smashing it's way through the atmosphere. This is why a sonic boom is not heard until well after the aircraft has passed by. Finally, you can not see the disturbance of the water simply because it is occurring well behind the aircraft, and in the pic you can't even see direclty beneath the aircraft anyway. The water will be distrurbed if that F-14 is going 500 knots and it is not directly related to a sonic boom. Even a small plane will create a disturbance if it's flown close enough to the water. There's a video clip of this flyby that's on the internet, probably AVNews. If I can find it I will post the link. 
adsh, I am a UH-60 Blackhawk Maintenance Test Pilot which sounds twice as glorious as it actually is. I also AQC'ed (Aircraft Qualification Course) and served as a line pilot in the OH-58 Kiowa, UH-1 Huey and the AH-1 Cobra. I have bootleg hours (this means I have unofficially flow) in the AH-6. I have also taken FAM (familiarization) flights in the F-4, F-15 and F-16 and have unofficially manipulated the controls of the C-130. I'm also a rated fixed wing pilot and have flown lots of civil aviation airplanes.
Yeah the reason why i asked about it is because after i graduate from Uni i want to join the RAF here in england and i have glases so i don't think i could ever become a combat pilot is it possible i could become a nav i can't remmber what the information officer told me ages ago i would think it would be the same as what u have there in the US :rollGremlin29 said:
Actually the US has a varied policy depending on the service. The Navy for example dropped their 20/20 requirement back in 1990 I believe, pilots could have something like 20/40 as long as it was correctible to 20/20 and of course there were a few other qualifiers such as no night myopia etc. I don't believe the Air Force has changed their policy and still require 20/20. The US Army requires Warrant Officers (not the same as Warrant Officers in other services, a Warrant in the US Army is a commissioned officer) to have 20/20 vision upon commencement of flight training while regular officers have a relaxed standard more in line with the Navy. As I understand it the US Army just started or is about to start an experimental class made up from individuals who have had their eyesight problems corrected with laser. Our flight surgeon believes that within the next 10 to 20 years all US aviator types will be required to have their eyes "fixed" to better than 20/20 via laser but only time will tell. Whatever you do, do not get the RK procedure, this will disqualify you from any type of military service, at least in the US and I'd expect the UK to be same. Hope that helps! And the best of luck in your pursuits!!
yeah thanks for that advise i always thought tht lazer correction is too much of an extreame way i am trying to join in as Engineer but i think the navy is more keen on hireing Computer Scientists (better training and career development packages )Gremlin29 said:
the RAF are interested but i know they have a tougher standard and they always pick the top the the best. but i guess i would be happy being any part of the armed services. there is one problem tho i am not too sure how i would do when i join the navy i have flown many times(while travleing). but i have hardly stepped foot on a sea vessel far form any Naavy vessel. and the thought of living there in that litle comunity and where u have to get along with every one not just work with them becasue you know that you can't just go home after a days work. lol :roll