Tag Archives: photo

Coin Tree

C59F2066.jpgI’m not sure whether to categorize this as in interesting oddity or vandalism. While walking in the Lakes, we came across this tree. At a distance I thought it was an interesting type of bark but, once you get closer, it is clear that the tree has coins jammed into the surface. I have no idea how or when this started or even why it did. Obviously, a lot of people have jumped on the bandwagon and now there are so many coins embedded in the wood that I couldn’t see the point of even trying to estimate how many there were. Instead, we just checked the whole thing out and then went on our way.

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Ripples in the Skin

AU0E4290.jpgThe construction technique for aluminum aircraft fuselages is known as semi-monocoque. A monocoque structure takes the entire load through the shell of the structure. In airframes, the skin is very thin and so frames and longerons are joined to the inside to provide additional rigidity while the skin still takes a lot of the load. If you haven’t ever seen the cross section of an aircraft structure, you may be surprised to see just how thin the skin panels actually are. They are perfectly up to the task of pressurization and bending loads so no need to panic.

AU0E4488.jpgAn outcome of this design approach is that the panels between the frames and longerons can experience some load directions that induce a measure of buckling. Nothing that is beyond their elastic limits but something that can be apparent if the light comes from the right angle. The lower side of the rear fuselage of the Boeing 757 is an area that is susceptible to this in certain flight conditions. I saw a number of them recently – both -200 and -300 models – and they both were showing visible distortion of the panels. The sun angle meant that the shadowing of these areas was apparent.

AU0E9169.jpgThe 757 is by no means the only aircraft to experience this phenomenon. The B-52 Superfortresss is a jet that shows this effect on plenty of occasions. I have heard people comment on it being a function of the age of the airframes but it is more of a result of the design of the basic structure than anything else. Certainly nothing to be immediately concerned about.

Rainbow Fireboat

AU0E4281.jpgDuring the Parade of Ships for San Francisco Fleet Week, the first warship was led by a fireboat from the City. It sprayed water from its hoses to provide a focal point to the parade. As it got closer to us, the angle of the light and the mist from the fire hoses resulted in a clear rainbow forming in front of the fireboat. It looked pretty cool and I am not sure the photos really do it justice. However, here is a shot to show you pretty much what we saw.

Did Anyone Bother With This Livery Design?

AU0E1538-2.jpgNot long ago I complained about the dirty condition of a China Eastern A330. At the time, I thought it might be a non-standard jet because the livery was basically white with a couple of distinguishing marks. It turns out that I hadn’t appreciated that China Eastern have replaced their previous colors with a new and less colorful scheme. Since then I have seen some 777s come in with the new scheme. In an era of relatively bland airline colors, it seems to me that China Eastern have gone a stage further and taken any interest at all from the livery. Not a cool effort on their part I think. They should check out what China Southern is doing by comparison.

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Grotto Pond

C59F3022.jpgExploring the grounds of Chatsworth House took us to places we had not seen on previous visits. Even if you exclude the majority of the estate and just focus on the organized garden areas, there are so many parts to see that it is easy to overlook them. This is why, despite having been to Chatsworth on a number of occasions, this time I saw areas that I had not seen before. One of these was the Grotto Pond.

C59F3005.jpgBecause this area is one of the furthest away from the main house, the number of people making their way that far out is pretty small. It is not deserted by any means but it is pretty quiet. This is ideal given how tranquil the setting is. It was very easy to just stand and look. Given how far out in the country you are, there isn’t much background noise so you can let your mind wander…

JetBlue’s 200th Aircraft

AU0E5008.jpgThe repetitive nature of the same airlines and the same types is what you expect of airports these days. Every once in a while, though, the airlines put some extra decoration on their aircraft. Usually you can see that there is something there before you get to see what it actually says. JetBlue have an Airbus A321 that is apparently their 200th aircraft. It has a big decal on the rear fuselage to highlight this fact. It apparently joined them over a year ago so a bit late for congratulations.

Kitchen Garden

C59F2878.jpgIf you have a big country house, you will be housing a lot of people. No doubt, there will also be times when you will host a large gathering. You need to be able to feed everyone. The estate produces a lot so it will cover many needs but the kitchen also has to have its own garden. Located a short distance from the main house and slightly up the hill, Chatsworth’s kitchen garden is very extensive. It has a lot of space and many different types of food in production.

C59F2897.jpgAs with everything else about a place like Chatsworth, function does not override form. The gardens are laid out beautifully and with structure. They are functioning still yet they are a place worthy of visit just for the appearance. Some areas are restricted to keep the visitors from inconveniencing everything too much but much of the space is fully open to wander through. The staff is busy but were willing to talk if you had questions.

747 Formation Takeoff – Well, Nearly

AU0E4529.jpgWhile the world’s 747 fleet is progressively running down, United is still a big operator of the type and SFO is a focus of their operations of the type. Consequently, during the surge of departures to Asia in late morning, you will have a pretty steady stream of Jumbos taxiing out and taking off. While Roger and I were out, a couple of them taxied out at the same time. We had one holding short of 28L and the other was in the gap between 28L and 28R as incoming aircraft approached. I joked with Roger that the two of them should line up on parallel runways and depart in formation.

C59F7901.jpgWhen the inbound jets had landed, both aircraft moved forward again and, sure enough, they lined up on both runways. We couldn’t help but laugh at this since they seemed to be following our instructions. You will regularly see parallel departures on the 01 runways but we couldn’t believe that we would have the same thing here. Sadly, we were right. The closer jet departed first and was then followed a short while later by the second. It would have been very cool to see them climb out side by side but that was a bit too much to ask.

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Downtown Oakland

AU0E8178.jpgDepending on which way you depart out of Oakland, what time of day it is and what side of the plane I am on, I get a variety of things that I can get a shot of. On this day I got to see downtown Oakland and the light on the city was pretty nice. The view across to Lake Merritt and the heart of downtown (including the building I work in) was pretty good. Here is a quick sample of what I saw that day including the run across the bay towards Treasure Island.

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The Less Subtle Bits of Dreamliner Design

AU0E2346.jpgAirliner design is a complex task with many compromises. It is not a surprise that some aspects of the design that results aren’t exactly what you would like. Today I am picking on one particular type – the Boeing 787 Dreamliner. This is almost as new as it gets in the airliner design world so you would expect it to be better than what came before.   However, having seen a number of them recently, I have been focused on two areas of the design that are rather disappointing. One is the wing root fairing area and the other is the cargo doors.

AU0E3642.jpgA nice smooth design is what the old aero guy in me likes to see and the inlets and fairings around the transition from the fuselage into the wing root are pretty ugly. They are obviously there as a result of functionality requirements but it does not look good and I imagine it comes with a drag penalty that has had to be accepted.

AU0E2336.jpgThe other area is the cargo doors. I am not sure whether this is a function of the load transfer requirements from composite to metal in the hinges but this area looks rather chunky and draggy. I know from previous projects that the nature of composites versus metals means that you can end up with some large joining fixtures to redistribute the loads but there may be other reasons I haven’t thought about. Given how smooth some metallic fuselage cargo doors are, these jumped out at me. Perhaps I have never looked closely enough at other types. Whatever the fairness of it, I just don’t like what they have done here.