Tag Archives: military

F-15E Strike Eagle

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A recent anniversary of the first flight of the F-15E Strike Eagle was commemorated on a Facebook group and it got me looking through a variety of old shots I have of the jet.  Having found a bunch of them that I liked, I figured I might share a few of them on the blog too.  Here are a few of my favorites from over the years.

A Bonus With the A-26

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Aside from my two HondaJets and a little other traffic, things were not looking too busy at Boeing Field.  I was contemplating my next move when I glanced at FlightRadar and saw a Douglas A-26 was flying over Seattle.  This is one that is based at Renton and used as a personal transport by the owner.  I have never seen it in action before.  Consequently, I was quite excited.  At first, I thought it looked like it was turning towards Boeing Field which would have been handy but then it headed north up towards the San Juan Islands.

I figured that, even if it was landing up there, it would be coming back to Renton later on so headed off in that direction to work out what flow the pattern was using.  The A-26 had departed over the lake to the north but all of the movements now seemed to be from the north so I figured it would come in from that direction.  No chance of shooting it from above at the overlook point at the south end but still plenty of options.

Unfortunately, they have closed off part of the park at the north end of the field and erected fencing.  This takes away an area of higher ground which gives a good view of the threshold.  However, with a couple of Cessnas bashing the circuit, I was able to see roughly what would be good and what wouldn’t.  A check on FlightRadar showed that they had finished flying around the San Juans and were coming back over the city.

They followed the water from the coast in to Lake Washington and I thought would be coming straight for me.  However, they continued over Bellevue instead.  I wondered if they were off somewhere else but soon they had turned back and were heading for Renton.  Looking up the lake, I could pick them out a long way out, long before they had even configured for landing.  With the fall foliage still evident on some of the shorelines, it made for quite a nice shot – something that wouldn’t have been the case at the other end.

The A-26 is pretty speedy so they were soon on final approach and I grabbed a bunch of shots both tight and wider.  Then they zipped by and behind the newly erected fencing!  I packed up my stuff and headed off but, as I drove back south, I saw they were still on the ramp outside the hangar.  I pulled in a watched them put the plane away.  Only at the last minute did I realize that I could have got a closer shot from near the gate but I shouldn’t complain given how lucky I had been to see them out on my day off.

Shock Diamonds and the F-22

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Within the very high speed flows of air in an aircraft’s exhaust, you can set up a series of shock waves and expansion fans as a result of the differences between the pressure of the flow and that of the surrounding air.  When afterburner is engaged, the hot gases and the temperature changes these shocks and expansions cause, result in a diamond pattern forming in the exhaust plume.  In darker conditions, these diamonds are more conspicuous but they are visible even in normal daylight.

These diamond patterns are a function of the flow being symmetrical since most engines have round exhaust nozzles.  This isn’t the case for the F-22, though.  It has flattened nozzles with a pointed profile top and bottom.  This got me wondering what the effect is on the exhaust plume and whether the traditional diamonds are formed or whether the nozzle shape results in a different pattern of shock and expansions as they reflect within the plume.  I decided to dig in to some shots to see what I could find.

I don’t have a lot of F-22 afterburner shots.  While I have shot them a lot taking off, they often take off without afterburner.  Since they have plenty of power and burner use dramatically increases fuel consumption (and the F-22 is not over-endowed with range as it is), there is no point using burner if it isn’t needed.  Air shows are a time when they do give it plenty of burner, so that is the source of the shots.

The result of this is that there is definitely something unusual about the shock patterns.  I include some shots of F-16 and F/A-18 afterburner plumes and the normal shock patterns that create the hotspots known as the diamonds are very obvious and simple in shape.  For the F-22, things are very different with the patterns of hot zones being something more in line with the shape of the nozzle.  The way in which the patterns repeat is more complex than for an axisymmetric nozzle.  There is nothing much to conclude in these observations.  It is just something that appeals to an old aero guy like me.

Fisher P-75A Eagle

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While researching some old images of mine from the experimental hangar at the USAF Museum in Dayton OH (the collection of which has since been moved into a new, custom build display hangar which is far more spacious), I saw some shots of something which, to be honest, I had no idea what it was.  I took a look at the website of the museum to try and identify the type.  It is a Fisher P-75A Eagle.

I did not knew Fisher existed and discovered it was part of General Motors.  The configuration of the aircraft is quite unusual.  The engine is mounted in the middle of the aircraft driving a contra-rotating propeller.  The cockpit is further forward that on other single-engined fighters of the era since there was no space allocated to the engine up front.  The underside includes a pair of inlets.  The airframe is finished in polished metal rather than paint.  Overall, it looks quite impressive.  From what I read, another type was not deemed as necessary so development was terminated and they used the airframes for engine development work.  Funny how I saw it on the visit and took photos and then promptly forgot about it.

Back to Coupeville for a Day Off

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NOLF Coupeville was scheduled for FCLP training and strong winds from the Southeast were forecast which suggested the right runway would be in use.  I also had a day off scheduled.  While the rest of the weather was potentially not ideal, I figured I would make the trip.  Why. Not?  They were due to be flying from late morning but, as seems to be usual, it was just after noon by the time things started to look active.

I was worried about the low cloud base but it was actually not a problem.  The wind was really strong gusting 20-30 kts.  This was giving them some interesting flying.  Early on, there was a hint of sun sometimes which really helped the photos.  As they climbed out after each touchdown, the skies behind made from interesting backgrounds and showed off the heat haze from the exhausts as well as the streaming tip vortices courtesy of the damp conditions.

After a while, I got a visit from the Navy Police.  The young lad informed me I wasn’t allowed to photograph the jets. I pointed out I could be he was most insistent that I couldn’t.  Rather than have trouble I decided the stop shooting.  As it happened, the conditions got a bit worse anyway so I had got the best of what was on offer.  I just watched the rest of the flying which included quite a few bolsters and some sketchy touchdowns as the wind got stronger.

More of the RAF’s Poseidon Test Flying

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In this recent post, I had an RAF Poseidon flying over the house.  A little while later, I was at Boeing Field when the same jet came back from a test flight.  Here are some shots of it as it rolled out after landing.  It wasn’t long after this that the jet was delivered to the RAF and made the trip to its new home in Lossiemouth.

Coast Guard MH-60

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While at Boeing Field on a sunny day, I was pleased to see a Coast Guard MH-60 Jayhawk flying along the runway.  MH-65s are the local Coast Guard helicopters so a Jayhawk is a nice change.  Having seen the MH-65s doing a fly through before, I was hoping that we would get the same but they actually pulled up and turned in the the FBO.  However, once on the ramp, the kept rotors running so I knew they would be out again soon.

When they did come out, they actually back taxied to the far end of the field.  I would have been a lot happier with them making an intersection departure closer to me but that wasn’t to be for some reason.  Consequently, they had gained a fair bit of altitude by the time they came level with me.  A belly shot was not what I was after but never mind.  The underside view gives a good view on the three external tanks that the Jayhawk can carry.  That gives some serious range when heading far offshore to rescue someone in need.

Blue Angels Legacy Hornet Retirement

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Recently, the Blue Angels made their last formation flight with the F/A-18 Hornet.  The team is transitioning to the Super Hornet ahead of 2021 and they have started working up with the new jets.  It has been a while since I last saw the Blue Angels demonstration so I thought a few shots with their aging legacy Hornets was in order.   They always got the oldest jets in the fleet so I hope they are happy to have some slightly newer airframes to work with.

Royal Air Force P-8

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The RAF has been taking delivery of its new maritime patrol aircraft.  The retirement of the Nimrods left the RAF without a maritime aircraft for about a decade which is a strange choice to make.  Finally, the P-8 Poseidon was ordered to reinstate that capability.  They started coming off the line here in Seattle a while back.  The fourth aircraft has been undergoing testing ahead of its delivery.  It was returning from a test flight and was coming straight for our house.  It is not unusual for planes heading to Boeing Field to come our way so I grabbed the camera and got a couple of shots as it flew by.  It even turned slightly giving a slightly wing down view in one shot.