24 votes

Do fighter jets have windshield wipers?

No modern US fighter jets are equipped with windshield wipers. At faster speeds they aren't needed as moderate rain simply blows off. Heavy rain at slower approach speeds will sometimes present a ...
Michael Hall's user avatar
  • 25.7k
13 votes

Do fighter jets have windshield wipers?

Fighters or other airplanes without special provisions like boundary layer blowers or wiper systems, that fly in rain a lot, can/will apply water-beading coatings like "Rain-X" or an ...
John K's user avatar
  • 130k
12 votes
Accepted

Why does the F/A-18 have so many lift supplementing devices?

The leading edge strake extension is there to solve a handling qualities problem the airframe had at high angle of attack without it. Not only does the aircraft need to fly at high speeds (which ...
Rob McDonald's user avatar
  • 9,171
11 votes

Do fighter jets have windshield wipers?

No, because they do not need them. This video, named See Why Jets Don't Need Windshield Wipers shows an in-cockpit view of an American jet taking off from an aircraft carrier. You can see that prior ...
Aubreal's user avatar
  • 463
10 votes

Why does the F/A-18 have so many lift supplementing devices?

The F/A-18 Hornet was designed to take off and land on an aircraft carrier. It also needed a very high maximum speed. To fly very slow (to land on the deck) and very fast, different aircraft shapes ...
Anonymous Physicist's user avatar
8 votes

How do canards reduce the X-59's sonic boom?

One of the important factors for sonic booms is the longitudinal distribution of lift along the aircraft. The canard helps bring some of that lift very far forward. Notice also that the aircraft has ...
Rob McDonald's user avatar
  • 9,171
8 votes

Why weren't WWII piston aircraft able to fly at 500mph?

What am I missing? The contribution of zero lift drag to overall drag at high speed. L/D drops to much lower values than 10 at the top speed of piston-powered airplanes. Let's take an example: Given ...
Peter Kämpf's user avatar
6 votes

Why weren't WWII piston aircraft able to fly at 500mph?

What am I missing? The historical and technological development. Let's start with the historical one. The benefits of a swept wing had already been known at least since 1935 when A. Büsemann ...
sophit's user avatar
  • 10.9k
6 votes

What are the techniques that delay the formation of shock wave over wing?

Winglets are not used to delay shocks. They help to squeeze a bit more lift from a wing and reduce induced drag for a wing of given span. Winglets help to increase the pressure difference between the ...
Peter Kämpf's user avatar
4 votes

Could ballonets be used in rigid airships

Yes, inflating ballonets in an airship's rigid envelope would necessarily compress the "gasbags" therein containing lifting gas, thereby increasing that gas's density and reducing the ...
Camille Goudeseune's user avatar
3 votes

Does adding twist to wing always decrease induced drag and what are its effect on parasite drag?

If you do a bad job twisting a wing, you can certainly make induced drag worse. Twisting a wing should not have a significant effect on parasite drag. If you have a very detailed parasite drag model, ...
Rob McDonald's user avatar
  • 9,171
3 votes

What are the techniques that delay the formation of shock wave over wing?

In addition to Peter Kämpf's fine answer, shocks can be weakened, delayed, or avoided by: Reducing thickness of the wing. Reducing lift coefficient (related to his turns and pull-ups comment) Local ...
Rob McDonald's user avatar
  • 9,171
2 votes

What wing design provided the best energy retention for a fighter jet

This is not a matter of wing type -- instead a matter of wing and aircraft design. An aircraft designed for maneuvering might be designed such that it achieves maximum L/D in the midst of a combat ...
Rob McDonald's user avatar
  • 9,171
2 votes

How/why does engine torque and horsepower affect aircraft speed?

Horsepower is what propels an airplane through the air; more horsepower means more speed. Power is neither torque nor RPM by itself: it is their product. (Torque)x(rpm)x(conversion factor) = ...
niels nielsen's user avatar
2 votes

Horizontal oval windows in Cessna aircraft

You are reading the graph the opposite way you should read it. In the extreme case of a "horizontal flat" windows (i.e. a window with zero thickness, i.e. no windows as funnily but correctly ...
EarlGrey's user avatar
  • 145
2 votes

How do size and speed affect sonic boom strength?

A larger and heavier aircraft must displace more air and create more lift to sustain flight, compared with small, light aircraft. Therefore, they will create sonic booms stronger and louder than those ...
Taylor B's user avatar
1 vote

What types of aircraft can TS-1 fuel be used for?

TS-1 can be used in any subsonic turbine-powered aircraft. Note that the second of your questions has already been asked: Can TS-1 fuel be used in an aircraft that takes Jet A? I'll add a brief note - ...
Therac's user avatar
  • 25.5k
1 vote

What is the relationship between the wingspan and the electrical power of the DC motor?

Glide tests with the model in its current configuration and weight will answer a lot of questions about power required. This depends a lot on your weight. The heavier the aircraft, the higher its ...
Robert DiGiovanni's user avatar
1 vote

Horizontal oval windows in Cessna aircraft

Humans are naturally more interested than scanning left and right along the horizon than scanning up and down. We inherently tend to disregard or mentally minimize objects that are located far from ...
quiet flyer's user avatar
  • 22.2k
1 vote

Why is the Busemann biplane not used?

it would seem trivial to tilt the biplane to produce lift Apparently, this is where the entire structure of the Busemann biplane would begin to generate a whole new set of shockwaves while also (...
Robert DiGiovanni's user avatar
1 vote

Why weren't WWII piston aircraft able to fly at 500mph?

Another effect which must be considered is that when the vector-resolved airspeed at the tip of a propeller blade which is spinning and translating through the air gets close to mach 1, the drag force ...
niels nielsen's user avatar
1 vote

How/why does engine torque and horsepower affect aircraft speed?

Horsepower and torque affects RPM. For a given torque, an aircraft needs greater RPM to achieve greater speed. And that means more horsepower. For a given RPM, an aircraft with a higher blade pitch ...
Abdullah is not an Amalekite's user avatar

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