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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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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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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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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 ...
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Is it possible to build a honeycombed vacuum balloon? [closed]

Is it possible to build a vacuum balloon with a near perfect void that can lift heavy objects and doesn't collapse and buckle under the atmosphere? I expect perhaps a honeycombed or lorimerlite ...
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How did the windshield technology evolve?

I would really appreciate it if someone could please explain the differences and similarities between the cockpit windows of a Boeing 747-400 and Douglas DC-3. I am just trying to figure out how the ...
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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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What were the J47's turbine blades made of?

What materials were used to make the General Electric J47 turbine blades in the 1960's?
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What components of the Boeing 787 are made out of titanium?

Inspired by the question, Why is the 787 tail cone made out of titanium?, I want to know what other parts of a Boeing 787 are made out of titanium. We now know, the APU exhaust cone is made out of ...
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Why is the 787 tail cone made out of titanium?

In this question there is a drawing of a 787 that shows that the tail cone is made of titanium. Why is such a heavy-duty material like titanium required for the tail cone? I do not see how there ...
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Which are the main aluminium alloys used in airliner construction?

The proportion of composites used in airliner construction has increased in the last decades, with the B787 and the A350 being the first ones with composites making up the majority of wing and ...
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How does the rotor blade material affect aircraft performance?

Helicopter rotor blades in newer helicopter designs are made from composite materials. This results in improved performance. Is this simply because they are lighter or is there another reason behind ...
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What is the average weight difference between composite and metal airliners?

Is there any rule of thumb for weight savings using composite materials. For example, is there an early model large airliner like the B747 or even B737 that later was modified with composite wings or ...
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What are Water Vapour Resistant (WVR) engine bags made from?

What specific material are Water Vapour Resistant (WVR) engine bags made from?
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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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What materials are suitable for making a mini gas turbine engine?

What materials are suitable for a mini/model gas turbine engine, specifically the fan, compressor, combustion chamber and turbine?
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What type of variation in temperature does the wing undergo?

Generally what is temperature variation does the wing of the commercial aircraft like A380 undergo , flying at mach speed of 0.8 and how does it affect the aircraft other than icing , what type of ...
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What type of hydraulic oil is used in the aviation industry?

Among the three different types of hydraulic fluid types (mineral based/petroleum based, synthetic esters, naturally occurring vegetable oils) which one is used in the aviation industry and why?
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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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Why does the MiG-25 have silver-coated panels?

This is about the Mig-25. This documentary on youtube, @10:03, says: Special insulating panels had to be fitted to protect the area around the engines from overheating. The panels were silver-...
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Are artificial magnetic fields used or proposed to be used to shield high altitude pilots and astronauts from charged, high energy radiation?

If not for the earth's magnetic field our atmosphere would be bombarded by high energy plasma (ionized gas) from the sun and other space sources. At very high altitudes and orbital altitudes this ...
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What material is used on the wing surface of this airplane?

This is one of the Redbull's 2015 Flugtag contestants; I was wondering what material is used on the wing surface of this airplane? video here.
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Could low pressure compressor blades be made of aluminum?

With the compressor blades on a gas turbine, could the low pressure blades be made of aluminum, or would it be catastrophic? Edit: Like the 6061 alloy.
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1answer
449 views

On a small/micro jet engine, can the turbine blades and vanes be made out of ceramic?

I am researching on how to make a small jet engine, and trying to figure out the materials for rotor and stator blades just after the combustion chamber so that they can hold up to the temperatures ...
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What is the material composition of aircraft compressor blades?

I read up that aircraft compressor blades are generally made out of titanium. I was curious as to why is titanium the choice of material used for aircraft compressor blades? What alloys are involved ...
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Is tungsten a good metal for jet engines, besides the weight penalty?

Right now, the hottest part of jet engines are made from a steel-nickel alloy. Is tungsten a better choice? Pure tungsten has the highest melting point and highest tensile strength of any other pure ...
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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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What materials are used to make up a combustion chamber? [duplicate]

What type of materials are used to make up the different sections such as the linings of the combustion chambers in a gas turbine engine. Do these type of materials vary for the different types of gas ...
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How can I design and build an aeroplane from scratch? [closed]

Let's say I want to build an aeroplane completely from scratch (not downloading some blueprints on the internet, I mean really designing it myself). The goal is to create a flyable aeroplane from ...
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Are flame holders made of a special material other than that used in combustion chamber?

Are the flame holders made of materials which have higher friction coefficients than the combustion chamber in order to create turbulence?
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Can stainless steel replace titanium for Mach 3+ speeds?

In the documentary Wings of Russia: MiG-25 and MiG-31, they mentioned both aircraft had to use special stainless steel alloys and arc welding to withstand the Mach 2.83 - 3.2 speeds. I couldn't help ...
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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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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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When airplanes first got windows, what material was used?

When airplanes were first introduced they were open cockpit - but soon enclosed cockpits were developed. What were the first materials in use for airplane windows? I don't believe plexiglass existed ...
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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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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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Maximum/Lowest achievable expansion ratio (generally) in a turbine? [closed]

Let's think about a turboprop with a single shaft. The turbine moves the compressor and the propeller. My question: what is the "limit" to the expansion ratio achieved by the turbine? If we call $5$ ...
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What are the wings and fuselage of an airliner made of?

Which materials are used to make the wings and the fuselage of an airliner, for example the Boeing 767 or the Airbus A320?
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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 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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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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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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1k views

What material are High Pressure Compressors made of? [duplicate]

What material are GE engine High Pressure Compressor (spools) made of ? i.e. aluminum, titanium ?
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What does “composite panels on a frame” mean?

Reading about composite materials in the 787 on Wikipedia, I came across this: Carbon fiber, unlike metal, does not visibly show cracks and fatigue, prompting concerns about the safety risks of ...
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How are rocket engine nozzles able to survive very high temperatures without melting?

The temperature of the gaseous products exiting from the nozzle is higher than the melting point of the nozzle material. So how do the nozzles survive without melting despite exposure to such ...
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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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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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Can one make an electric-sailplane from transparent carbon fiber?

Is it technically feasible to make a sailplane from transparent carbon fiber? I am looking for an answer based on the specifications' comparison of the 2 different fibers. And can it be made self-...