Tag Archives: aircraft

Boeing 777-300ER Main Gear

When Boeing launched the 777-300ER, they took the stretched fuselage of the 777-300, a model that didn’t sell particularly well and married it to the updated wing that made use of the fuel capacity of the outboard portion of the wing that had been left when the original concept of a folding wing was contemplated. The increased the weights of the jet, added far more powerful engines and, with the increased fuel capacity, came up with a winning formula that has done a very effective job of killing off the 747.

One problem that they had to deal with during development was runway length requirements for takeoff. Even with the bigger engines, the long fuselage limited rotation angles at takeoff and meant a higher takeoff speed was required which meant a longer runway requirement. Boeing came up with an interesting solution (after dumping some slightly more curious ideas). The main gear on the 777 has a triple axle bogie. Previously this had rotated about the pin attaching it to the main gear leg. Boeing’s solution was to lock the bogie level during takeoff.

The result of this is to have the rotation of the jet at takeoff to take place around the rear wheels of the bogie rather than the gear leg pin. The slight aft movement of the rotation point allows the aircraft to rotate slightly more nose up and gain a greater angle of attack. This gives slightly more lift for a given speed. This means an earlier takeoff and a shorter runway requirement.

I have tried many times to witness this at work. First, it happens pretty quickly. Second, I am often in a poor position to see the rotation point. Recently I was at SFO to pick up some people. I was getting a few shots prior to their flight arriving and a Singapore 777-300ER was taking off. The rotation point is quite far away (although, if you are in the terminal, you might have a good view) and the heat haze is a problem. However, I decided to get a sequence of shots anyway. Now, how to use them.

Heat haze is crappy on stills but less of an issue with moving images so I decided to animate the sequence. I imported all of the shots into Photoshop as layers in a single document via Lightroom. The hardest part was aligning them. I started at the bottom layer and then progressively made each layer above visible. I then changed the latest top layer blend mode to difference. This makes aligning them a lot easier since everything is black unless it is different. I was focused on the gear so used that as the reference as the fuselage rotated. Once each layer was in place, I changed the blend mode back to normal and moved to the next layer up.

Once they were all aligned, I used the animation timeline to make frames from each layer (and reversed the order since every time I do this they seem to be the wrong way around). Then I could crop in to get the overall view I was after and save the file. A Save for Web allows the generation of the animated GIF and we are done. The image at the top is the final result. It does allow you to see a bit of what is going on if you look closely although it is still a bit hard given the distance, the angle to the ground and the heat haze. I guess I will have to find a location closer next time.

Red Flag 14-2

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When things go according to plan, the USAF holds their Red Flag exercise three times a year at Nellis AFB in Las Vegas NV. Global Aviation Resource like to provide some coverage so, with the second event of the 2014 program taking place in march, I headed down to cover the event. I spent a couple of days down there. One day was on base as guests of the public affairs people at Nellis. They started out the day with an interview panel with a number of officers from different units and air forces. They were a good bunch and willing to answer our questions – well, most of them since they wisely avoided answering some questions that should never have been asked of them.

With the interviews over, we headed out to the runways. There are two runways at Nellis that are used together. We were able to stand between them and given relatively free range as to how far up and down we wanted to go. There are clear preferences as to which runway you want them to use based on the light. The launch took place around the middle of the day and they launched off to the northeast. In this case he light was best on the aircraft on the left runway. However, you have to do what you can for those on the right as well – often the aircraft you want to focus on. (There is a bunch of aircraft that you are told not to photograph. Often it takes a while to realize that what is coming is something you can’t shoot but most people seemed to play by the rules.)

When the recovery starts, they tend to use the opposite runways. By now the light has come around so you really want them to come in on the left. Sadly, a lot of traffic went to the right. If you had been outside, you would have got a good amount of traffic to shoot. When recoveries had wrapped up, we all got back on the buses and headed out. The second day I spent outside the base. This provides an opportunity to get a different selection of shots for the article. It also is unrestricted in what you can shoot so some of the stuff that was restricted while on base can now be shot for the coverage. Sadly, various things resulted in a lot of the recovering traffic going to the left. This would have been great if I was on base but sadly it meant a lot of interesting stuff was a long way off. Still, plenty of stuff came our way. With the Speedway building up to a NASCAR racing weekend, the crews had been told to keep it tight. Some certainly did that and came a lot closer to us than expected or even turned within us. It made for some interesting angles to shoot.

The finished article is available through the magazine we publish. You can find it here. Please go and download a copy if you haven’t already seen it. Aside from my work, there is a bunch of great stuff to take a look at.

Ryan Flyby

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I had not been up to Sonoma Skypark for quite a while. Lots of things had been going on that had either kept me at home or taken me further afield but, with a nice Saturday forecast, I figured it was time to get back up there and say hello to some folks. The weather held to the forecast and it was a great day to be up there. During my first visit to Schellville, I had met Dave Masters and photographed his ST-A. Dave also pays a visit to Skypark each week. I had seen him there before but had not shot him from the good light side of the field.

This time I was determined to do so. When he appeared downwind, I scampered across the field to get into position. I was just in time as he came down the approach and I grabbed a sequence of shots. Here they are.

SFO From the Hill

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Many of my recent posts have involved aircraft operating from SFO. One of the restrictions SFO has is that, being bounded by water means there are limited opportunities to vary your shooting angles. One thing I was ken to try was an overview of the field. Driving along I-380, you are up on the ridge looking down to the airport and you are almost directly in line with the east/west runways. I thought that there must be somewhere accessible where you could get a similar view.

I checked with a guy I know who lives locally to see if he had any ideas. He had already beaten me to it and had shot just what I was thinking about a couple of years before. He suggested an area that might be suitable so I headed out. I found a location with just the sort of view I was looking for. The air was relatively clear so the shots of the field were quite good with one exception. At this range, the heat haze is really difficult. You are a long way out and everything between you and the airport is developed and has a lot of warmth rising from it on a nice day. However, even knowing this, I still thought the difference the shot provided was worth the effort.

I was extra lucky in that I met a bunch of guys working on a car in the driveway of one of the houses on the street I chose. They were a good bunch and a lot of fun to hang out with so the infrequent nature of departures on that runway was compensated for by having people to pass the time with. The shots here are a few that I got. The aircraft continue on a pretty straight departure route so they end up passing almost directly over you.

I would like to try shooting here another time. Later in the day with softer light and – hopefully – less heat haze would be good. The location might also be good for the multiple exposure type shooting I have done at Coyote Point. After dark would also work well to generate some light trails. Lots to think about for future shoots.

Curtiss Jenny

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When talking about vintage aircraft, I am frequently discussing aircraft that are from the Second World War era or later. However, one of the residents of Schellville is a Curtiss Jenny. This is a First World War aircraft and the example here is an original. It doesn’t get to fly very often but I was lucky to be there on a day when it was planned to take it up for a couple of sorties. We moved it out to fuel up and then took it onto the field to launch. (It should be noted that pushing an aircraft around the field quickly makes you appreciate where the gradients are. What looks like nothing when you are walking suddenly becomes conspicuous when pushing an aircraft – even a relatively light older one!)

We crewed up the Jenny and got her ready for start. Unfortunately, fortune was not on our side. She fired up willingly enough but a quick check of the engine compartment after start revealed a fuel leak and we shut her down. A trip back to the hangar to troubleshoot meant that there would be no flying that day. Once back inside, a hose was found to be split and this was the source of the fuel. Not the sort of thing you want to find out about while flying so the sound approach of everyone was justified. Fixing the hose was easy so, hopefully the Jenny will be flying again soon. Now to get some good weather and availability for everyone concerned!

I also had a little video of the start up which you can see below.

Erickson Flashback

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I was recently looking back through a few of the previous posts and came across some images of Erickson Aircrane at work in Chicago with their S64 Skycranes. I was thinking about the various times I had worked with these guys and it occurred to me that several of those lifts had taken place before I started the blog. Therefore, today is a gratuitous chance to look at some older helicopter shots.

The guys at Erickson have carried out many lifts in the Chicago area. On one occasion, they did two lifts in one day on opposite sides of the city. The first was down near Hyde Park with some equipment being lifted onto a residential block. The loads were lifted in a park area in front of the building. Lots of trees were in this park and the Skycrane did an excellent job of finding the weakest and dead limbs. By the end of the job, the ground was covered in dead wood!

The second lift was in Oak Park and was from a garage structure up to the roof of the building. however, next to the garage was an older building with a wooden roof and balconies which had lots of stuff stored on them. After the morning, we were rather worried about how much stuff would be damaged. Amazingly, the gentle breeze from the street made the downdraft totally benign and the building was unharmed. Hope you like the shots.

Blue Angel

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A surprise visitor at Boeing Field timed his arrival perfectly. I had just pulled up at the field when I saw something running in on the approach at speed and not descending. This had the look of a military break. I didn’t have the camera out but, fortunately, given that it looked like they would break downwind to land, I had some time to grab the camera. Sure enough, it was an F/A-18 that broke overhead. More interestingly, it was a two seater from the Blue Angels.

I was ready by the time it was on the approach and managed to get a few shots as they landed. They then taxied over to Clay Lacy’s FBO and parked up. Not sure what they were in for but it could involve the planning for Seafair later in the year. Whatever the reason, a nice surprise.

Small Corporate Jets

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While the big jets were an interesting target for me at Boeing Field, there is a good trade in smaller corporate jets too. The regularity of Citations and their ilk makes them a little less exciting but they can still be interesting if painted up nicely. However, one that caught my eye was an older Learjet. This is operated by Boeing Flight Test as a support and chase aircraft for their programs. It taxied by before departing over my location.

Also we got a Dassault Falcon 10. Quite a vintage type of jet these days so that was a nice surprise.

L-100

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My Boeing Field visit also included a very nice surprise. The evening was drawing in quite quickly but a view off to the south showed a lot of smoke coming from something on the approach. At first I had no idea what it was but soon the familiar shape of a Hercules came into view. This was a civilian model, the L-100. It was operated by Lynden Air Cargo delivering something large!

They were heading for a ramp close to the threshold so the crew were not shy about thumping the aircraft down right on the numbers. A decent cloud of tire smoke let you know they were down and then they put the props into reverse and were soon off the runway and taxiing back to the stand. An interesting aircraft and a lucky break.

Big Business Jets

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I was back in Seattle recently and, while the reason for being there took up the majority of my time, I did have a couple of opportunities at the end of the days to pay a visit to Boeing Field. I had been there last year and made the best of the nice light later in the day then. This time, the light looked good but proved to be a bit fickle and the day was not as long given the time of year. However, I did get an interesting selection of aircraft to shoot. Boeing Field is a popular location for business aviation given its close proximity to Seattle city center. There were some very nice large jets visiting. An Airbus ACJ from Germany was parked up the entire time I was there but I never saw it move. However, I did get to see some Globals and Gulfstreams stretch their legs.

The Global Express is a great looking business jet. One arrived shortly after I did and I managed to get it as it came in. I was at a spot I hadn’t tried before. It gives a better angle on the aircraft as they approach and touch down but it does suffer from a more cluttered background which is a shame. The Global looked like it was heading out again as I got ready to leave for the evening so I decided to go to the departure end of the runway and try and get it head on. By now the light was really going but I ramped up the ISO and decided to go for it anyway. Having Mount Rainier in the background certainly doesn’t harm a shot but it was really a bit too dark.

The other nice visitor was a G650. The newest of the big Gulfstreams is a significant improvement from an aesthetic point of view as far as I am concerned. This one had a great paint scheme too so I was very happy to see it. The runway direction was changed just before it left so I got to see it as it was airborne rather than on the takeoff roll which was nice.

Throw in some Dassault Falcons and I had a lucky run given how limited the time was that I had there. Hopefully I will be back again sometime soon.