Category Archives: military

The Conflict of Sharpness and Prop Vortices

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Damp days can make for great prop vortices on takeoff.  However, I have been feeling less than satisfied with my results recently.  As I was going through some shots, I made a discovery that should probably have been something I worked out before.  I like to have a good amount of prop blur so drop the shutter speed down when I can.  I go with a high frame rate with the aim of getting a good sharp shot amongst the more blurry examples.

As I go through the shots, the sharp ones have okay prop vortices but not great.  Then I will come across some really nice vortices but the shot is otherwise not sharp.  It seems that, in panning with the plane to get a sharp shot, the trailing vortex gets blurred out.  If I am not panning well, the vortex can be the thing I have tracked better and it shows up well.  I have seen shots from others with the props almost frozen with a high shutter speed and the vortices easily seen.

Consequently, I am going to have to make a decision in future.  How much prop blur do I want versus the ability to see the vortices well.  A little trial and error will be involved.  At least it is fall/winter so the Pacific Northwest will probably provide me plenty of damp days on which to experiment!

Tornados and a Jag – My Old Handling Buddies

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In my days in the aerodynamics department at Warton, I spent time working on the current aircraft handling section.  This included a number of types but the main focus was on jaguar and Tornado work.  When we were walking around the hangars at Duxford, there were examples of both jets on display.  The Tornado was a big part of what I worked on and I had always loved the jet as it was coming in to service at the time I was getting interested in aircraft.  The GR4 version is on display.

The Jaguar had been around a long time when I was getting into planes and the Tornado ended up replacing the Jaguars in the RAF Germany strike role.  The jet continued for a lot longer though and got some decent upgrades late in life.  I had a great time climbing over a jet in the hangar at Warton as we were looking at clearing a new store on the overwing pylon.  A lot of fun!

Sunrise on Stored KC-46s

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Boeing is now delivering KC-46s to the Air Force at a rate that is a bit of an improvement.  There are still plenty of issues with the project (with some only recently discovered) but at least jets are now making their way to the customer, even if they are not flying them too much!  However, there are still a lot of the jets parked at Paine Field.  The early morning sun provides some nice light on the line of aircraft.  It is a rather cluttered view with plenty of airfield material in the shot but the light makes it a bit more appealing.

Boeing’s T-38 Finally Comes Out in the Sun

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I have struggled to get shots of the Boeing chase aircraft in decent light.  Whether it is the T-33s or the T-38s, my encounters have generally been on overcast days.  Finally my luck changed and one of the T-38s came in to Paine Field for a couple of approaches on a sunny day.  It was the middle of the day so the light angles weren’t great but it was certainly a step up.  A couple of passes and then they headed to Boeing Field.

Northrop Grumman Firebird

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Northrop Grumman brought the Firebird to Fairford for RIAT.  RIAT is a big public show but it has developed a significant trade element to it and Firebird was clearly aimed at that audience.  It is a Scaled Composites design (with Northrop Grumman having bought Scaled a while back) and, while it has a cockpit, apparently it has the option to be flown unmanned.  I don’t know whether this is well tested or not.  Nor do I know the state of production examples.  I believe the one at RIAT was the prototype.

It was parked in the static park for a portion of the time I was there.  I did see it getting towed across to the north side at one point, presumably so it could be parked in a hangar rather than left out.  Supposedly, there is a US Government order for some of these and I imagine they will be fitted with some interesting systems.  Whether I shall ever see one is a different story.

Odd F-16 Vortices

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With a sharp LERX, the F-16 regularly pulls a nice vortex on each side as it maneuvers hard.  Getting a shot of that is not a surprise.  However, I have recently been slowly making my way through shots from RIAT (months after the event) and I was working through some shots of the Belgian F-16 display.  I came across a shot of the jet pulling and rolling, taken from astern of the aircraft.  I noticed a second, smaller vortex trailing from the tail plane.  It appears that, with differential tail for the roll, there is a vortex coming from the tail plane – possibly at the route.  This pleases the old aero guy within!

Apache Wall of Fire

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The British Army display of the WAH-64D Apache is one I have seen plenty of pictures of but I haven’t had much of a chance to shoot it myself.  The majority of the display is pretty standard stuff with them maneuvering tightly in front of the crowd, much like the US army’s display of the similar type.  They do use a little bit of pyro during the display but the finale is a wall of fire.  I was a bit concerned about my position compared to theirs as they positioned for the big moment as the background looked like it might not be all fire.  However, things turned out well enough and I got the sort of shot I was hoping for.

Turkish Phantoms

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F-4 Phantoms are rapidly disappearing from service.  They remain in a few countries but their replacements are lined up in most cases.  The Turkish Air Force is still using them and brought some examples to RIAT.  They made their way to the west end for us to get some shots.  These jets had been planned for replacement by the F-35A Lightning II.  However, with the political fall out of the Turkish acquisition of Russian missile systems, they have been blocked from the program.  Maybe the F-4s will live on a little longer after all.

Hansajet Throwback

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The Hansajet was an odd airframe and one of those examples of manufacturers trying innovative things out that didn’t really go anywhere.  It had a slightly forward swept wing to improve efficiency but forward swept wings have largely failed to gain any traction.  It was operated by the Luftwaffe and this example was an attendee at an Air Fete at Mildenhall, I am going to say in 1991 but that may be wrong.  I saw it on approach and then again in the static display.  Quite a neat looking jet I think.  Anyone know if any still fly?

Patrouille de France Takeoff Configurations

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I was working through some RIAT photos of the Patrouille de France display.  I had some tight shots of the first four jets as they took off and, as I looked closer at them, I was confused as to why two of the jets had a more nose high attitude than the other two.  Since they are taking off on formation, I figured that they should look the same.

A closer look at the images and it seems that the flap settings of the jets vary.  The nose high aircraft seem to have less flap – hence their need for a higher angle of attack – than the other two jets.  I have been trying the think why they would adopt this approach.  With all jets accelerating together and climbing together, I had imagined that they would all be in the same configuration.  I wonder whether there is something to do with the outwash from the nearby jets that requires a different configuration but I haven’t come up with anything conclusive.  I throw it out to the aero engineers that read this to propose your ideas as to why.  If any of you know anyone in the PdF, feel free to ask them instead!