whiteshades
New Member
if i'm not mistaken, the feathers are automated to maintain engine pressure... so don't think you can really say that though... not sure... any pilots here?
Official Plane Spotting Thread II
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Yes it is. The whistling noise is constant and is because of the intake design. That "zoop" sound made in the youtube clip is from the CENC and only lasts a fraction of a second. The whistle from the intake is present and constant from start up to shut down.
Also, the turkey feathers do not activate. They merely serve the function of covering up the actuating rods in the nozzle. Look closely at the nozzles of an F-15C or E and you will notice that none of them have the turkey feathers on. Somehow the USAF Eagle community had problems with them constantly falling off and decided to remove them since they served no real purpose other than aesthetics and perhaps minor streamlining of airflow. The F-16s worldwide though have never had problems with turkey feathers falling off on a significant enough basis to warrant removing them. Strange huh? :think:
Also, the turkey feathers do not activate. They merely serve the function of covering up the actuating rods in the nozzle. Look closely at the nozzles of an F-15C or E and you will notice that none of them have the turkey feathers on. Somehow the USAF Eagle community had problems with them constantly falling off and decided to remove them since they served no real purpose other than aesthetics and perhaps minor streamlining of airflow. The F-16s worldwide though have never had problems with turkey feathers falling off on a significant enough basis to warrant removing them. Strange huh? :think:
I just found out that actually the PW's unique whistling noise is not of the air-intake but of the CENC or otherwise known as the convergent exhaust nozzle control.
read forum posts here http://www.f-16.net/f-16_forum_viewtopic-t-9441.html for a better explanation and check out this video http://www.youtube.com/watch?v=GcFWP_TvNjM
Approximately 50 secs into the video you see the Viper power down and back up with the super sweet whistling noise to the activation of the turkey feathers.
Both are right actually. The feathers are not automated, they are attached to the nozzle, which is controlled by the CENC when the engine is in PRI to maintain optimum pressure. This results in the nozzle closing to < 20% in MIL and open to almost 100% in idle thus a snap to idle will definitely result in the nozzle opening and producing that "zoop" sound. Multiple throttle bashes from MIL to idle back to MIL will produce a corresponding number of "zoops", showcasing the pilot's true skill, or lack thereof. 
whiteshades
New Member
I have a feeling that both of us are referring to two different whistling noises! LOL but in any case thanks for the great knowledge you are sharing!
Yes we most definitely are! 
I suppose you could say the F-16 does have 2 forms of whistling. A loud unmistakable one that you get with rapid nozzle movement, and another less obvious, but distinctly F-16 whistle from the intakes. One that you will not hear from a -229 F-15E. Both run the same engines but the high pitch whistle is not present in F-15E operations.
I suppose you could say the F-16 does have 2 forms of whistling. A loud unmistakable one that you get with rapid nozzle movement, and another less obvious, but distinctly F-16 whistle from the intakes. One that you will not hear from a -229 F-15E. Both run the same engines but the high pitch whistle is not present in F-15E operations. I have a feeling that both of us are referring to two different whistling noises! LOL but in any case thanks for the great knowledge you are sharing!
waoh... your comments does suggest some very "privileged" access that we can only hope for.
gilcrest
Member
I am not implying the areas are exclusive or privilleged but do note that stating detail information on the web invites unnecessary attention from building management and security personnels which will inconvience all.
In the midst of the security craze, any "odd or non routine activities invites attention and this may curtail us in plane spotting in any private or public building. Dealing with security personnel can be a pain when what they perceived they know and what we know is all different matter. But they can assert their authourity over us.
I remember an article in the earlier Plane Spotting thread where a block number in jurong was stated and the police/security personnel was swarming that block. Can't remember the poster of that reply.
So to keep things simple, we can only give clues to share. We won't know among us CSs whether they are security personnel monitoring the forum seriously.
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I am not implying the areas are exclusive or privilleged but do note that stating detail information on the web invites unnecessary attention from building management and security personnels which will inconvience all.
In the midst of the security craze, any "odd or non routine activities invites attention and this may curtail us in plane spotting in any private or public building. Dealing with security personnel can be a pain when what they perceived they know and what we know is all different matter. But they can assert their authourity over us.
I remember an article in the earlier Plane Spotting thread where a block number in jurong was stated and the police/security personnel was swarming that block. Can't remember the poster of that reply.
So to keep things simple, we can only give clues to share. We won't know among us CSs whether they are security personnel monitoring the forum seriously.
yah, dealing with the security personnel is really something which we wouldn't want to...
a simple google will pop out this thread :think: and with all the photos posted... :sweat: some field work with google earth on hand works wonders...
just hope people out there believe and know that we are just plane spotting and nothing more...
anyway, just keep the photos coming in... really enjoy looking at all the photos posted...
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accumulator
New Member
So to keep things simple, we can only give clues to share. We won't know among us CSs whether they are security personnel monitoring the forum seriously.
Very well said bro.
The 2nd shot of the 737 landing is it for 02 or 20. Cheers, I guess I missed this one that day.
Now this is a great shot! Never seen one like this before. Thanks fir sharing.
2nd Shot of the 737 is for 02L around 1730 Hrs, it caught my attention as the livery was simple.
A different view of a F15SG
nice ...2nd Shot of the 737 is for 02L around 1730 Hrs, it caught my attention as the livery was simple.
A different view of a F15SG
rocketfuel168
New Member
Hi Gilcrest,
That is a Tally Ho on the second picture where the Mudhen is climbing out.
You certainly have inspired a lot of us on spotting......
Thanks for sharing.
cheers
That is a Tally Ho on the second picture where the Mudhen is climbing out.
You certainly have inspired a lot of us on spotting......
Thanks for sharing.
cheers
accumulator
New Member
2nd Shot of the 737 is for 02L around 1730 Hrs, it caught my attention as the livery was simple.
A different view of a F15SG
Thanks for the info, I think the 737 could be doing flight test into Wsss from Wssl.
Nice view of the F15 !!! Fantastic angle :thumbsup:
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hi rocketfuel, 3 points.
1. I think you have wrongly used the term tally.
"tally" is defined as - sighting of a target, non friendly aircraft, landmark or enemy position. Opposite of no joy.
2. The second picture is of a jet landing, not climbing out.
3. The f-15sg is an air superiority fighter primarily, as such I don't think the aircrews would appreciate their jet being referred to as the mudhen. That term was used for the f-15e and even then, I don't think the USAF aircrews would like their jet called that.
1. I think you have wrongly used the term tally.
"tally" is defined as - sighting of a target, non friendly aircraft, landmark or enemy position. Opposite of no joy.
2. The second picture is of a jet landing, not climbing out.
3. The f-15sg is an air superiority fighter primarily, as such I don't think the aircrews would appreciate their jet being referred to as the mudhen. That term was used for the f-15e and even then, I don't think the USAF aircrews would like their jet called that.
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Accumulator, the 737-300 is another Las Vegas Sands jet, not a repositioning flight. Here's a listing of their aircraft inventory: http://en.wikipedia.org/wiki/Las_Vegas_Sands#Aircraft (mistake on the rego for the 737 in the Wiki entry). Expect to see the aircraft listed to come to Singapore more often from now on.
Beanokim, the F-15SG IS considered a Mudhen. Its based on the F-15E not the C/D. From the horse's mouth at www.boeing.com/singapore2010/media/Backgrounders/Bkgd_F-15SG.pdf
And Mudhen/Beagle are the nicknames of the F-15E, so nothing wrong with the usage.
Also, rocketfuel168 is not totally wrong in his usage of Tally Ho. See http://en.wikipedia.org/wiki/Tally-ho under Air Traffic Control
Beanokim, the F-15SG IS considered a Mudhen. Its based on the F-15E not the C/D. From the horse's mouth at www.boeing.com/singapore2010/media/Backgrounders/Bkgd_F-15SG.pdf
And Mudhen/Beagle are the nicknames of the F-15E, so nothing wrong with the usage.
Also, rocketfuel168 is not totally wrong in his usage of Tally Ho. See http://en.wikipedia.org/wiki/Tally-ho under Air Traffic Control
rocketfuel168
New Member
Hi Beanokim,
Most aircrafts are given affection nicknames by their air and ground crews and some good example are
USN A4 Shyhawks - Scooter, Kiddiecar, Bantam Bomber, Tinker Toy Bomber and Heinemann's Hot-Rod.
USAF B1 Lancer - The B-ONE
USN F18E/Fuper Hornet - Rhino
RAAF F111 Aardvark - The Pig
USAF F015 Thunderchief - Thug and Lead Sled
Just to name a few. Like a old saying goes "A Rose by any other name is still a Rose"
As for the term "Tally Ho" I was just using it figuratively. Planes are still the main subject for this spotting discussion. So it is still a "Tally Ho" when a good subject is captured on a "Kodak moment"
Most aircrafts are given affection nicknames by their air and ground crews and some good example are
USN A4 Shyhawks - Scooter, Kiddiecar, Bantam Bomber, Tinker Toy Bomber and Heinemann's Hot-Rod.
USAF B1 Lancer - The B-ONE
USN F18E/Fuper Hornet - Rhino
RAAF F111 Aardvark - The Pig
USAF F015 Thunderchief - Thug and Lead Sled
Just to name a few. Like a old saying goes "A Rose by any other name is still a Rose"
As for the term "Tally Ho" I was just using it figuratively. Planes are still the main subject for this spotting discussion. So it is still a "Tally Ho" when a good subject is captured on a "Kodak moment"
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whiteshades
New Member
Great shot dude.
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