F-22 in sonic transition

[jd]

[Canuck[_6_]]

JD! That is an AMAZING shot! Where in the world did you get this??? Did you
take it???

FAN-tastic!

Thanks!

Nick




"jd" > wrote in message
...
>

[Morgans[_2_]]

"jd" > wrote in message ...

That just became my new wallpaper on my PC. Great pic.
--
Jim in NC

[Bob (not my real pseudonym)]

On Mon, 29 Jun 2009 20:05:22 -0500, "Canuck"
> wrote:

>JD! That is an AMAZING shot! Where in the world did you get this??? Did you
>take it???
>
>FAN-tastic!
>
>Thanks!
>
>Nick

http://www.navy.mil/view_single.asp?id=73057

090622-N-7780S-014 GULF OF ALASKA (June 22, 2009) An Air Force F-22
Raptor executes a supersonic flyby over the flight deck of the
aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is
participating in Northern Edge 2009, a joint exercise focusing on
detecting and tracking units at sea, in the air and on land. (U.S.
Navy photo by Sonar Technician (Surface) 1st Class Ronald
Dejarnett/Released)

[Canuck[_6_]]

"Bob (not my real pseudonym)" > wrote in message
...
> On Mon, 29 Jun 2009 20:05:22 -0500, "Canuck"
> > wrote:
>
>>JD! That is an AMAZING shot! Where in the world did you get this??? Did
>>you
>>take it???
>>
>>FAN-tastic!
>>
>>Thanks!
>>
>>Nick
>
> http://www.navy.mil/view_single.asp?id=73057
>
> 090622-N-7780S-014 GULF OF ALASKA (June 22, 2009) An Air Force F-22
> Raptor executes a supersonic flyby over the flight deck of the
> aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is
> participating in Northern Edge 2009, a joint exercise focusing on
> detecting and tracking units at sea, in the air and on land. (U.S.
> Navy photo by Sonar Technician (Surface) 1st Class Ronald
> Dejarnett/Released)

Awesome! Thanks for the info and the link.

I think I have a new desktop wallpaper!

Take care,

Nick

[jd]

"Bob (not my real pseudonym)" > wrote in message
...
> On Mon, 29 Jun 2009 20:05:22 -0500, "Canuck"
> > wrote:
>
>>JD! That is an AMAZING shot! Where in the world did you get this??? Did
>>you
>>take it???
>>
>>FAN-tastic!
>>
>>Thanks!
>>
>>Nick
>
> http://www.navy.mil/view_single.asp?id=73057
>
> 090622-N-7780S-014 GULF OF ALASKA (June 22, 2009) An Air Force F-22
> Raptor executes a supersonic flyby over the flight deck of the
> aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is
> participating in Northern Edge 2009, a joint exercise focusing on
> detecting and tracking units at sea, in the air and on land. (U.S.
> Navy photo by Sonar Technician (Surface) 1st Class Ronald
> Dejarnett/Released)

Thank you for the details. It was e-mailed to me by a friend who knows I
like aircraft, but I had no other details - it was just titled 'Photo of the
day #4'. I thought it was the best of the genre - condensation on an
aircraft - that I had seen. Thank you also to Dan, for the information on
the condensation. I thought it was triggered by local regions of low
pressure, most commonly observed at near-sonic speeds, but hadn't realised
how easily such extensive condensation could be seen at low speeds.

[Canuck[_6_]]

>>
> Thank you for the details. It was e-mailed to me by a friend who knows I
> like aircraft, but I had no other details - it was just titled 'Photo of
> the day #4'. I thought it was the best of the genre - condensation on an
> aircraft - that I had seen. Thank you also to Dan, for the information on
> the condensation. I thought it was triggered by local regions of low
> pressure, most commonly observed at near-sonic speeds, but hadn't realised
> how easily such extensive condensation could be seen at low speeds.


I just wanted to chime in.... condensation is quite common even at takeoff
and landing speeds. Check out the hundreds (thousands?) of pictures of a
Concorde takeoff and you will almost always see condensation trailing across
the wings. I've seen CF-18's cause condensation to form off the wingtips
even at landing speeds providing the conditions were right. Ditto for most
other types of aircraft.

Nick

[Bob (not my real pseudonym)]

On Tue, 30 Jun 2009 22:55:34 +0100, "jd" > wrote:

>
>"Bob (not my real pseudonym)" > wrote in message
...
>> On Mon, 29 Jun 2009 20:05:22 -0500, "Canuck"
>> > wrote:
>>
>>>JD! That is an AMAZING shot! Where in the world did you get this??? Did
>>>you
>>>take it???
>>>
>>>FAN-tastic!
>>>
>>>Thanks!
>>>
>>>Nick
>>
>> http://www.navy.mil/view_single.asp?id=73057
>>
>> 090622-N-7780S-014 GULF OF ALASKA (June 22, 2009) An Air Force F-22
>> Raptor executes a supersonic flyby over the flight deck of the
>> aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is
>> participating in Northern Edge 2009, a joint exercise focusing on
>> detecting and tracking units at sea, in the air and on land. (U.S.
>> Navy photo by Sonar Technician (Surface) 1st Class Ronald
>> Dejarnett/Released)
>
>Thank you for the details. It was e-mailed to me by a friend who knows I
>like aircraft, but I had no other details - it was just titled 'Photo of the
>day #4'. I thought it was the best of the genre - condensation on an
>aircraft - that I had seen. Thank you also to Dan, for the information on
>the condensation. I thought it was triggered by local regions of low
>pressure, most commonly observed at near-sonic speeds, but hadn't realised
>how easily such extensive condensation could be seen at low speeds.

While condensation can indeed form at low speeds depending on relative
humidity and pressure drops, the conical vapor cloud in the F-22 photo
is indeed an effect of trans- or supersonic flight - the condensation
here forming in the low pressure zone immediately behind the high
pressure shock wave. And since the near-surface air over the ocean
tends to be rather humid, condensation is usually just a breath
away...