Here are passages from a
by Cao Chunxiao, CAS academician, mostly giving the titanium and composites content of varius aircraft. It was posted months ago in the J-20 thread, but it has information about a variety of other planes. I bolded the numbers for ease of reading.
(Titanium)
Therefore, the amount of titanium alloy is constantly innovative. The special of the big airplane is two big contents, one is big luck, one is big guest, military transport plane is also big airplane special important content. The titanium content of these two aircraft is about 9% to 10%. C919 Titanium alloy dosage even and 777 equivalent, already is relatively advanced. But compared with
Boeing 787 and A350, we still have a gap in the dosage of TI alloys, and they use
14% to 15%. Now Russia has been working with us at the same time to create a record of titanium content in MS21. Why does Russia use so much? Probably because the titanium alloy is its strength, the production is also big, the level also can, therefore the
MS21 titanium alloy dosage ratio is
25%, this is the information introduction. It is likely that it has created the highest record of the current, and it has just flown a little later than us.
Military aircraft titanium alloy used more, the main disadvantage of titanium alloy is expensive. Civil aircraft will not necessarily use a lot of economic considerations. Titanium alloy material is used in the blade. Because of the air superiority of the war, it was used more on military aircraft. The highest record is
F22, the aircraft used
41% of titanium, composite
24%, aluminum alloy only 15%, the original is mainly aluminum alloy, is now the main titanium.
F35 also many, with
27% of the titanium. American bombers are also very powerful titanium, B1 bombers are 21%,b2 bombers used to 26%. The big bomber used 26% of the titanium.
Our country's civil aircraft are still moving forward. For example,
ARJ21 used
4.8%, to
C919 already used
9.3%.
The amount of titanium used by military fighters in our country is also increasing. We are 8 with titanium is rarely 2%,
fighter 10 with titanium
4%,
J 11 used to
15%,
fighter 20 used to
20%,
fighter 31 used to
25%, also count more. Our
shipping 20 is similar to the American
C-17. America's C-17 called the Global Overlord and our shipping 20 nickname called the ROC, uses the titanium quantity all is
10%. In fact, two grades are similar.
We have quite a lot of titanium on the aircraft carrier. The most advanced carrier aircraft
f-18e/f in the United States is
15% of titanium, we ship aircraft
fighter 15 flying shark titanium alloy dosage up to
20%.
The parts above the landing gear of the 787 are made by the United States with better and stronger titanium alloys. Our national aviation titanium alloy parts are also many, such as we use a lot of F-20 titanium forgings.
(Composites)
Here is a look at the composite materials, composite materials reign of the times, menacing. Composites have developed very quickly over the years, with composites growing and A380 25%, which is a turning point, and then to Boeing 787 with 50% composites. Boeing 787 used more composite materials, the fuel consumption reduced, and then airlines have to 787, which promoted the A350 design of the major changes in the Airbus of composite materials to 53%, more than the United States Boeing 787 use more, which shows the composite on the aircraft more and more use of the trend. Many other kinds of aircraft composite materials have leaped first.
Our national composite materials in the fighter can be used, but still need to continue to develop. We used the
J-20 to
29%. Military transport
Y20 is currently
8%, commercial aircraft
ARJ21 1%, we
C919 intend to use
12%, and continue to improve in the future.
