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.

Filter by
Sorted by
Tagged with
13
votes
1answer
2k views

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 ...
2
votes
2answers
263 views

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 ...
3
votes
2answers
194 views

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 ...
2
votes
1answer
204 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 ...
3
votes
4answers
240 views

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
5
votes
1answer
447 views

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 ...
2
votes
2answers
90 views

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/ ...
2
votes
0answers
69 views

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 & ...
3
votes
2answers
166 views

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
0
votes
2answers
239 views

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?
0
votes
2answers
244 views

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 - ...
8
votes
0answers
267 views

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 ...
19
votes
2answers
2k views

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 ...
6
votes
1answer
633 views

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.
8
votes
8answers
12k views

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 ...
4
votes
1answer
782 views

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 ...
1
vote
1answer
191 views

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, ...
2
votes
0answers
80 views

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.
2
votes
1answer
130 views

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?
18
votes
3answers
11k views

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)
6
votes
3answers
423 views

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 ...
4
votes
1answer
828 views

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 ...
2
votes
2answers
4k views

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 ...
2
votes
1answer
123 views

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 ...
5
votes
1answer
413 views

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 ...
0
votes
2answers
207 views

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)?
2
votes
2answers
200 views

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 ...
0
votes
0answers
51 views

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 ...
1
vote
2answers
348 views

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 ...
5
votes
1answer
306 views

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 ...
3
votes
2answers
2k views

Which aluminium alloy is used in the Boeing 747's fuselage?

Which aluminium alloy is used in the Boeing 747's fuselage?
3
votes
1answer
813 views

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?
10
votes
1answer
2k views

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 ...
41
votes
1answer
8k views

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 ...
4
votes
1answer
642 views

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 ...
4
votes
1answer
469 views

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 ...
6
votes
1answer
2k views

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 ...
1
vote
1answer
121 views

What are Water Vapour Resistant (WVR) engine bags made from?

What specific material are Water Vapour Resistant (WVR) engine bags made from?
4
votes
2answers
1k views

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
3
votes
1answer
1k views

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?
3
votes
2answers
946 views

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?
3
votes
1answer
229 views

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 ...
3
votes
1answer
4k views

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?
7
votes
2answers
7k views

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 ...
6
votes
1answer
594 views

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-...
2
votes
1answer
177 views

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 ...
4
votes
0answers
226 views

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.
1
vote
1answer
224 views

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.
2
votes
1answer
565 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 ...
2
votes
2answers
2k views

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 ...