Questions tagged [aerospace-materials]

Asp materials are materials, frequently metal alloys, that have either been developed for, or have come to prominence through, their use for aerospace purposes.

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Which parts of an airplane are made of buoyant material?

Which parts of an airplane (to make this question more specific: accessible in the main fuselage where the passengers are aboard) are made of buoyant material. Imagine a plane is about to crash into ...
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Can control surfaces for slow aircraft be 3D printed?

Can control surfaces for slow aircraft be 3D printed or even just printed as a core and then wrapped in fibreglass or carbon fibre? I understand that 3D printing of wings, etc. is pretty common in the ...
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Why doesn't a hot jet engine crack at 10,000 metres and -50 C air temperature?

I have seen videos of red hot jet engines being tested at sea level in a building. But even in a building the temperature difference between the engine and the room is large. Most materials would ...
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What is the tailhook on naval aircraft made out of?

What is the tailhook that enable naval aircraft to land on aircraft carriers, it must be made out of a strong metal to not bend or 'snap' under the force of the thrust that the plane is expelling, as ...
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Could an F-35 really be 3% rare-earth?

The Financial Times' China targets rare earth export curbs to hobble US defence industry states: Fighter jets such as the F-35, a Lockheed Martin aircraft, rely heavily on rare earths for critical ...
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Deicing Rod for Propellers

Similar to a card hitting the spokes of a bicycle, the card is soft enough to knock the dust off the spokes with no damage. What material would be best to impede the propellers to chip off the ice. ...
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Was wood used in the construction of the TU-144?

This image the Yegoryevsk crash of the TU-144 CCCP-77111 appears to show a part of the wreck made of wood: (picture source) The inside looks like wood slats with rafters. Wood is sometimes used in ...
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Why are the leading edges on the Boeing 787 made from aluminum?

Why are the leading edges of the wings, horizontal stabiliser and vertical stabiliser and the engine's inlets made from Aluminium?
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Materials usually used in dorsals fins specifically in the ATR 72

I am an aerospace engineering student and I am having problems finding information about the materials usually used in the dorsal fin of an aircraft. I would also like to know the kind of stress and ...
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How to know the material of key-top?

Posted it here originally. There are keys (push buttons) on the front panel of an avionics device that fits inside the aircraft cockpit. I need to know the material of which those key-tops are made ...
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1answer
219 views

What is the most recent turbofan engine that used steel for its bypass fan blades?

I haven't been able to locate any engines that use steel for the bypass fan. All sources suggest Ti and composites are used for blade construction. Apart from the weight steel could partially make up ...
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Did the Phantom F-4 contain “polychron” or other synthetic materials as a replacement for rubber circa 1969?

update: In order to make it easier to answer this question, use of "synthetic materials as a replacement for rubber circa 1969" in any aircraft might be good enough. Michael Crichton's 1969 ...
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Why did wings start to be made with aluminium skin instead of fabric?

Why did engineers start designing planes with aluminium skin on the wings instead of fabric covering? While the force of lift acts on the skin, to my knowledge it is not subject to high stresses
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What material is the B737 wing skin made out of?

What material is the B737 wing skin made out of? I actually couldn't find much information on the wing skin upper and lower panel materials for the B737, the general guess is of course aluminium, but ...
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Can UHMWP be used as composites for aircraft impact susceptible areas?

Can Ultra High Molecular Weight Polyethylene (UHMWP), be used as composites for aircrafts impact susceptible areas? I did some research but could only see UHMWP being used as a hybrid with graphite/ ...
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What material is used for the skin of a modern fighter jet?

Modern passenger jets/airliners use aluminum 2 to 3 mm thick as their skin, their maximum speed is 900 km/h give or take. Modern fighter jets travel at twice that speed on average. What material is ...
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Which connector and cables are recommended for CAN?

Which mechanical connector(s) and cable(s) is/are recommended to arrange a Controller Area Network (CAN) bus communication or its aerospace counterpart ARINC 826 in the aerospace industry (civil & ...
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Are composite materials, which are being widely used in newer aircraft, better at handling bird strikes?

Do current composite materials handle bird strikes better than their predecessors? Or they are not part of forward-facing components/areas? For example, the Boeing Dreamliner or the Airbus A350-XWB.
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3-D Printed Carbon Fiber UAV Skin

aviation pros! New to the aviation/RC world and would like to ask a serious question about using composites for the skin of a UAV I am developing my first time out. Want to use carbon fiber for a ...
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What is the reason for the poor low-speed characteristics of sweptback wings?

I know there are advantages of swept-back wings delaying shock-wave allowing a aircraft to fly faster. However, what are the disadvantages. I know one of them is that they have very poor low speed ...
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How are engines mounted onto wings?

I've heard that the engines on a commercial air transports are typically mounted with 2 or 3 bolts. Is this true? If so, how big are these bolts and what are they made of? I'm optimizing a bolted ...
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Why don't the noses have the same de-icing metal surface like that of the wing's leading edge, engines, tail, etc.?

For reference, let's take the A320. The nose is painted like the rest of the body. Image Source
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Why don't they build airplanes from 3D printer plastic?

I'm not an expert in this field. My assumption is that there are plastics lighter and stronger than the materials used to build planes. So that would make plane lighter and thus would consume less ...
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Why do we use composite aluminium or titanium stacks in airplanes? [closed]

Why do we use composite aluminium or titanium stacks in airplanes? What are their machining conditions?
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How are composite materials on aircraft joined?

Answer for the question Why are planes using rivets & not welded construction? describes why rivets are preferred for joining aluminium alloy components. But how are carbon-fibre-reinforced ...
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Why is there such a low level of automation in the aerospace industry (compared to other industries such as automobile)?

I have been watching some episodes of the documentaries made by National Geographic lately and I have noticed something that I can't find an explanation for. In this episode of Megafactories - ...
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What materials are used for aircraft windshields?

Is hard plastic or some form of plastic replacing glass in aircraft windshields? Any idea/companies/players in this field?? I have heard there is recent trend as plastics are light in weight and have ...
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How strong is aircraft-grade spruce?

I have been trying to find some real numbers on how strong a single solid piece of aircraft graded spruce wood timber is, but haven't had much luck and the numbers that I have found so far were either ...
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What is the material of snubber brakes?

What is the material of snubber brakes that is used for stopping the spin of the nose landing gear? KC-135, Boeing 747, 727 are the aircraft that I saw with these snubbers.
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Why don't short-haul regional jets go for composites?

We have seen Airbus and Boeing going all the way for composites on their A350 and 787, but when it comes to smaller planes like the Embraer E-jets or the Bombardier C-series, they choose to use ...
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What material was/is used on the skin of the Blackbird SR71?

What material was/is used on the skin of the Blackbird SR71 and how was it cooled. How was it manufactured to be stronger with age
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What are the criteria that govern the choice between titanium, composites, and more common materials, like aluminum?

In the newest large commercial jets, composite materials seem to be all the rage. The first thing I wanted to know is why composites were chosen instead of titanium? If I'm not mistaken, titanium has ...
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Can a wooden/fabric cover design be built of metal?

I know this question is somewhat general and could vary from plane to plane so I will elaborate on the plane in question. The specific plane I am curious about is the Mooney Mite which has a metal ...
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1answer
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How do fighter jets measure how high they are?

I know most of the commercial planes use altimeter to find how high they are. I was just curious in finding out what fighter jets use to to find their height and what are the other technologies that ...
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Are turbine and compressor blades and vanes cast or forged?

I was wondering how blades and vanes are typically made in commercial jet engines. Would you typically use investment casting to make compressor blades or just in the turbine section to accommodate ...
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1answer
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What materials are used in a Rolls-Royce RB211-524 Engine?

I am trying to know what materials (Specifically metals) are used in making a Rolls-Royce RB211-524 Engine. I already found what is used in engines in general, but is it the same for all? And if so, ...
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How do fast-flying aircraft avoid overheating?

As a follow-up question to What is the typical temperature of an airliner's hull during flight? I wonder how very fast airplanes, such as the SR-71 mentioned, avoid overheating with a total air ...
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How do composite aero structures compare against metallic structures in crash resistance?

is there any information available comparing the difference in crash resistance between composite mainly carbon or fiberglass polymers etc vs conventional metallic mainly aluminum aircraft structures.
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1answer
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How is a composite fuselage repaired when structurally damaged?

In case of FOD, a fuselage puncture for example, what is the repair process? Considering time, complexity and cost, how is compared if it was an aluminium fuselage?
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Why would a jet engine that runs at temps excess of 2000°C burn when it crashes?

Airline engines are designed to work at very high temperatures. Yet, when a plane crashes they're burnt (see below). Is it something in their design? (bostonherald.com)
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What material is used to make the interior sidewalls panels, ceiling as well as luggage bins in a commercial aircraft?

What material is use to make the interior sidewalls panels, ceiling as well as luggage bins? All these elements seems to be made of similar material. What is the weight these cabin interior elements ...
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Why has aluminium, rather than steel, prevailed in airliner construction?

As any cyclist knows, steel has many advantages over aluminium: it's stronger (for the same size) it can handle greater forces without needing to be stiffer it has better fatigue characteristics it's ...
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What material is used to make the hot sections of jet engines?

What metal alloy is used for the hot section of a jet engine? Specifically the exhaust nozzle? I have found mention of a titanium alloy and nickel alloy but nothing with that much detail. What sort of ...
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What is the material and font used on the panels of most cockpits?

I am working on a project for one of my aerospace engineering classes and was curious to see if anyone knew what type of material is used to make the panels of a cockpit (preferably a 737) as well as ...
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Can balloons be stacked in a climable daisy chain to the edge of space? [closed]

How high can a balloon/s be and still be tethered to the ground? The most common problem was finding the calmest place on Earth. The longest balloon chain is 20 km Pictures below are basic ...
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aircraft display Processors

what kind of Processors and GPU are used for Aircraft display ? Is it possible to use single processor to run all three displays (Primary flight display, Navigation display and EICAS)?
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Who manufactures the landing gear on the Airbus A350 series aircraft?

Where are they made? I assume that they are made out of titanium. Right?
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Which aluminium alloy is used in the Boeing 747's fuselage?

Which aluminium alloy is used in the Boeing 747's fuselage?
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Is there a flexible “cloth-like” material that can be used as “skin” for a non-conventional wing?

I am in the very early stages of playing with the idea of an ornithopter derived aircraft. The intention is to be able to scale the resulting aircraft, to passenger (or useful payload) carrying ...
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Could a airship be built using vacuum as the lighter-than-air “material”? [duplicate]

Could an airship be built that uses instead of a very light gas a vacuum to keep it floating? Or would the materials needed to keep its volume even without the pressure from the inside always be ...