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Questions tagged [slats]

For questions about those devices that swing forwards and downwards from the leading edge of an aircraft's wings, allowing them to produce more lift without stalling. Questions about high-lift devices in general should use "high-lift-devices" instead.

2
votes
0answers
46 views

Difference between multi slats and three slats on B737 ? (leading edge devices)

What is the difference between multi slats and three slats on a B737 ?
23
votes
2answers
5k views

Why didn't the Concorde have flaps or slats?

It's well known that the Concorde had no flaps or slats. The lack of high-lift devices considerably reduced lift at low speeds, requiring the Concorde to take off and land at higher speeds and angles ...
3
votes
1answer
271 views

What would be the effect of skinning over the gap in fixed leading-edge slats?

The Zenith STOL CH-750 experimental aircraft uses a modified NACA 650-18 airfoil (having a 17% fatter-than-normal thickness) with a fixed leading-edge slat. In an effort to reduce drag and improve ...
11
votes
3answers
2k views

When does a 'flaps/slats misconfiguration' warning sound during takeoff roll?

If a flight crew begins their takeoff roll and don't have slats and flaps configured properly, when does the system know when to sound the alarm? If it actually sounds during the roll itself, that ...
3
votes
1answer
208 views

What effect do slats have on descent rate?

During descent, assuming the same speed and idle thrust, is the rate of descent greater in a clean configuration or with slats?
13
votes
3answers
859 views

Why are the outboard Krueger Flaps retracted before the others on the B747?

In this video, I noticed that the outboard Krueger Flaps on this Boeing 747 were retracted while the middle and inner sets remained extended (refer to 3:22 - 3:30 in the video). My questions are: ...
3
votes
1answer
622 views

How to calculate the lift coefficient of a multi element airfoil?

How to calculate the lift coefficient of an airfoil section with flaps and slats if we know the Cl for the individual elements, like Cl of wing, Cl of slat and Cl of flap?
6
votes
2answers
2k views

What is this tiny slat for?

The one labeled as "1" in the picture. And I'm having doubts about "2", it is an air supplier for cabin, right? Or am I wrong? Thank you.
1
vote
1answer
581 views

What high-lift devices are used on the Bombardier Dash 8 Q400?

What type of flaps, slats or other high-lift devices are used on this aircraft?
0
votes
1answer
380 views

Does the Piper Aztec have flaps and slats and if so what kind?

I was just wondering if any one knows if the piper Aztec has flaps and what kind. Also if the piper Aztec has any other high lift devices.
11
votes
2answers
5k views

What are the benefits of using Krueger Flaps?

I mean why using Krueger flaps in some aircraft instead of using slats all over the leading edge?