40

I happen to own a homebuilt with tip tanks for ALL of the fuel supply (Pazmany PL-2), and while they look really cool, I'd prefer the fuel was in the wing leading edges mid span. There is no aerodynamic benefit. The tuna fish shaped tank doesn't function like a winglet (it has to be a wing to work like a winglet) and is too small to have any kind of end ...


29

As a generic answer, not unusual. Besides personal objects like bucking bars, clecos, rags and such left in tanks, the biggest contamination source, from my experience working on a production line many many years ago, is "swarf". Swarf is aluminum drill shavings and mountains of it are created during assembly. You will also get wire cutoffs and other ...


5

The aircraft is equipped with seven (7) integral fuel tanks: five (5) Center body fuel tanks and two (2) wing tanks. Center body fuel tank #2 serves an an engine feeder tank with all other tanks transferring fuel to it via a network of fuel pumps for consistent weight and balance. The aircraft can be refueled by means of a single pressure refueling ...


5

Like every plane, the MiG-29 stores its fuel in fuel tanks ;) On a more serious manner: Generally speaking, there are 6 internal fuel tanks: 4 distributed around the fuselage and 1 in each wing. Later versions (namely the SMT) have larger internal fuel capacity thanks to the enlarged spine. The exact locations of these tanks can be seen in this cutaway (...


5

The F-22 was developed in the 90's, primarily for use by the United States Air Force. This means it was designed to serve specific mission profiles. The F-35 however is going to replace the F-22 and serve all the air branches of the US Military. This means that it needed a broader mission profile. The last F-22 delivery was in 2016. For the F-22 Raptor: ...


5

The 172S POH, the current version in production indicates: FUEL VENTING Fuel system venting is essential to system operation. Blockage of the system will result in decreasing fuel flow and eventual engine stoppage. Venting is accomplished by an interconnecting line from the right fuel tank to the left tank. The left fuel tank is vented overboard through a ...


4

Earlier B-52s did not carry all their fuel in the fuselage. They also carried their fuel in the wings using rubber bladder-type wing tanks. The new B52G “wet wing” was a weight savings measure which also increased the fuel capacity over the bladder-type in-wing tanks. The metal fatigue of the new wing was due to a poor structural design which was supposed ...


4

The decrease in fatigue is not a property that's automatically conferred to the plane by the introduction of wet wing - it's a product of smart design. Usually the decision to use a wet wing is made during the initial design of a plane, and the support structure of the wing is built accordingly, so that it can take the dynamic strains that occur upon ...


4

Tip tanks are only used when the wing volume is not sufficient to carry the needed fuel. They can mostly be found on the early jets which had thin wings for a higher Mach number of drag rise onset and very thirsty engines. They offer two advantages over conventional external tanks: Their wing tip location allows the highest wing bending relief for a given ...


2

For small planes, putting fuel in tip tanks lets you add extra capacity without having to re-engineer the fuel cells inside the wing or the shape of the wing itself. It also lets you offer the plane for sale with or without the tip tanks so your customers can tailor the available tankage to best match their intended use model for the plane. It also means ...


2

In at least one case, yes! The Convair 990 jetliner (a derivative of the earlier Convair 880) had large, prominent antishock bodies on its upper rear wings, easily seen in this photograph of a retired NASA 990: (Image by NASA, via Stahlkocher at Wikimedia Commons.) These antishock bodies - particularly the larger inboard ones - also served as fuel tanks, ...


2

The 225 is derived from the An-124, which has 10 integral fuel tanks in the wings. Comparing the specs, it looks like fuel capacity is the same as the An-124, so the center section of the wing (the only new part of the wing) doesn't contain fuel. Based on that, I think the tanks are in sections 2-6 and 13-17. I'm assuming the outer wing sections 1 and 18 are ...


2

I saw this yesterday: Samchui.com: Foreign Objects Discovered In Boeing 737 Max Fuel Tanks Included in the list of items discovered are rags, tools, metal shavings and other production equipment, which pose a serious safety risk in flight and on the ground in operational service.


1

I just know that it forms a vertical partition which prevents the air flow from passing from the lower surface (overpressure) to the upper surface (depression). On some gliders, this partition also serves as a "shoe" to protect the fin when the wing is on the ground. can be used on some aircraft as additional tanks. Fouga-Magister, Cessna 320, Learjet 23, ...


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