Linked Questions

3 votes
2 answers
959 views

What is that protruding fuselage part? [duplicate]

Circled in red above, I suspect that's a high-lift device meant to improve handling at takeoffs and landings, but I don't know for sure really. What is its name and uses?
Tom's user avatar
  • 319
1 vote
1 answer
337 views

What is this feature on a Piaggio P.180? [duplicate]

(wikimedia.org) What is this feature on a Piaggio P.180? I believe it's called a dolphin tail, but why is it exactly there and what is it for and why don't all airplanes have this?
Ethan's user avatar
  • 9,349
49 votes
3 answers
21k views

Why does supersonic flight detach airflow from a wing?

I've read in several answers to questions that when a wing passes the speed of sound the airflow will become detached from the craft towards the rear quarter of the wing (thus making things like ...
Jae Carr's user avatar
  • 24.2k
26 votes
3 answers
6k views

Why does an airliner fuselage have a constant section over its length rather than a tear drop shape?

It is usually stated than a tear drop shape is a good shape for aerodynamic efficiency: Adapted from Nasa On the other hand, fuselage on an airliner has most of the time a long cylindrical section ...
mins's user avatar
  • 74.5k
21 votes
3 answers
33k views

What is the purpose of a dorsal fin such as on the Boeing 737?

I've noticed that the 737 has a rather unusual vertical stabilizer, with an extension at the front. Is the 737 the only plane equipped with such a vertical stabilizer, and what is its purpose?
Madhav Sudarshan's user avatar
19 votes
2 answers
29k views

How does chord length affect wing design?

In comments on the answer to a question about transonic speeds and control surfaces I came across this comment and I'm having a hard time understanding it. If you increase the chord, lift goes up ...
Jae Carr's user avatar
  • 24.2k
12 votes
5 answers
6k views

Why doesn't the A320 have a dorsal fin like the 737?

The A320 doesn't have a dorsal fin, but the 737 does. If the 737 is more or less a similar aircraft, why doesn't the A320 have a similar dorsal fin? By Bill Larkins [CC BY-SA 2.0], via Wikimedia ...
user13197's user avatar
  • 11.4k
7 votes
3 answers
3k views

What airframe design is best for stormy weather?

Consider picking a plane for weather study. This plane will intentionally fly into weather systems (e.g. inside the eye of a hurricane) to collect scientific data. It will be equipped with on-board ...
kevin's user avatar
  • 39.7k
9 votes
5 answers
1k views

Do most commercial jets have a negative lifting body?

I took a look at some example airfoils and noticed they all seem to have a downward hook at the end. I believe this draws the air downwards, creating a reaction force upwards: lift. Now here is a ...
DrZ214's user avatar
  • 17.8k
7 votes
2 answers
3k views

Would a vertical stabilizer that extends both above and below the centerline be benefit or hindrance?

Ignoring for a moment potential schematic difficulties in creating an aircraft that can land and take-off without threatening a downward vertical stabilizer, would a vertical stabilizer that extends ...
coburne's user avatar
  • 173
6 votes
2 answers
2k views

Is there a parameter that links the areas of the fuselage and control surfaces? [closed]

Do aircraft designers look at the ratio of how much fuselage surface area can be loaded onto a given unit of wing and tail surface area including elevator, aileron, rudder etc? (Possibly, the surfaces ...
Krishnaraj Rao's user avatar
6 votes
1 answer
1k views

What is this part in Embraer Legacy 650 and what is it function?

The picture I took from here. If you want to see, just click the link, it will take you to the part I want to show and ask. What I want to know is its name and its function.
AirCraft Lover's user avatar