Landing Speed

[BobTurner]

Originally Posted by gasman

You actually can't land the aircraft without stalling the wing. If the wing is not stalled, the wing is still flying and the brakes are not very effective until the wing is stalled.
1.

Sorry for the thread drift….
The above statement is simply not true. Not saying that landing at minimum possible speed is not desirable. But it’s not a necessary condition. Remember a stall - a disruption of smooth airflow attached to the wing - is a function of angle of attack, only. When all three wheels of a nose gear airplane are on the runway, the angle of attack is near zero, so little lift is generated. But the wing is not stalled. Same thing for a TW airplane doing a ‘wheel’ landing.

[gasman]

Originally Posted by rocketman1988

Not true. The wing does NOT need to be in a stalled condition to land…and in cases where there is any type of gust, you do not want to be right at stall speed, especially on approach.

Typical approach speeds are around 1.3 Vs, at gross approximately 72 knots, slowing over the fence to something less than that. If it’s gusty, add a few knots to increase the margin. I prefer half flap landings in my -10 and use about 76 knots on approach, give or take.

I definitely agree that your speeds should be predicated on your specific airplane; each one is just a bit different.

Sorry for the confusion..... I expected that everyone understood needing adjusting approach speed based on conditions.

You will notice, I was not talking about approach speeds.

[rocketman1988]

Originally Posted by gasman

Sorry for the confusion..... I expected that everyone understood needing adjusting approach speed based on conditions.

You will notice, I was not talking about approach speeds.

…and you need to understand that landing with a wing in a stalled condition is neither required or recommended in most cases.

Also, every landing is preceded by an approach; that approach is an important part of the landing.

[gasman]

Originally Posted by BobTurner

Sorry for the thread drift….
The above statement is simply not true. Not saying that landing at minimum possible speed is not desirable. But it’s not a necessary condition. Remember a stall - a disruption of smooth airflow attached to the wing - is a function of angle of attack, only. When all three wheels of a nose gear airplane are on the runway, the angle of attack is near zero, so little lift is generated. But the wing is not stalled. Same thing for a TW airplane doing a ‘wheel’ landing.

You are correct! I should have said..... no longer creating lift.

[rocketman1988]

Originally Posted by gasman

You are correct! I should have said..... no longer creating lift.

That is an incorrect statement as well…

[gasman]

Originally Posted by rocketman1988

…and you need to understand that landing with a wing in a stalled condition is neither required or recommended in most cases.

Also, every landing is preceded by an approach; that approach is an important part of the landing.

The OP was not talking about approach speed.

[scsmith]

Originally Posted by gasman

You are correct! I should have said..... no longer creating lift.

In order to "have landed" the wing must be producing less lift than the weight. It is not necessary that it create zero lift. Obviously braking is reduced when there is residual lift.

But the normal Van's mantra for landing tricycle airplanes is to hold the nose wheel off as long as possible. In doing so, the wing is making "some" lift. For a good touchdown, the wing is producing lift essentially equal to weight. Hold the nose there as you decelerate and the lift decays with reducing speed.

[rocketman1988]

Originally Posted by gasman

The OP was not talking about approach speed.

I KNOW that. You are completely missing the point but that’s ok.

[gasman]

Originally Posted by scsmith

In order to "have landed" the wing must be producing less lift than the weight. It is not necessary that it create zero lift. Obviously braking is reduced when there is residual lift.

But the normal Van's mantra for landing tricycle airplanes is to hold the nose wheel off as long as possible. In doing so, the wing is making "some" lift. For a good touchdown, the wing is producing lift essentially equal to weight. Hold the nose there as you decelerate and the lift decays with reducing speed.

How about.... no longer creating enough lift to sustain flight.

[rocketman1988]

Originally Posted by gasman

How about.... no longer creating enough lift to sustain flight.

Sorry, nope.