Take-off and landing speeds

[Ziegenhorn 0]

Team,

 

What are the respective take-off (v2) and landing speeds (vref) for the various plane models? I take it that at this point of the development all weights of the planes remain constant (no fuel consumption),

 

BuZ

[mlaban 0]

What are the respective take-off (v2) and landing speeds (vref) for the various plane models? I take it that at this point of the development all weights of the planes remain constant (no fuel consumption),

 

Correct, we have no fuel consumption at this time. (It is supported but disables, the fuel tanks always return 100%). The issue with V speeds is that they vary with a lot of factors. It would be hard for us to compute those in real time.

Our planes are typically loaded to 50% of the range from Empty Weight and Max Gross Weight. So if you have access to a chart, you can use those numbers to figure out the V-Speeds

 

Matt

[Ziegenhorn 0]

Team,

 

I have done some research and test flights. I hope that you find the following useful:

 

BuZ

________________________________________________________________

 

 

Embraer E195

 

in KIAS

 

Assumptions

Weight [constant] 52,000kg/114,600lbs [default]

Pressure altitude sea level

Static air temp. ( C) -40 to 32

No icing conditions

 

Abbreviations

V1 Take-off decision speed

V2 Take-off safety speed

VAC Approach climb speed

VAPP Approach speed

VFS Final segment speed (flaps and gear retracted)

VR Take-off rotation speed

VREF Landing reference speed

 

Take-off speeds

V1 VR V2 VFS

Flap 1 (7) 153 154 157 213

Flap 2 (10) 149 151 153 213

Flap 3 (20) 141 141 144 213

 

Landing speeds

VFS 212

VAC Flap 2 (10) 177

VAC Flap 3 (20) 157

VAPP VREF + 5 + wind component

VREF Flap full (37) 136

 

Max landing gear operation/extended speeds

Retraction 250

Extension 250

Extended 250

 

Maneuvering speed

VA 240

 

Maximum flap position extended speeds

Flap 1 (7) 230

Flap 2 (10) 215

Flap 3 (20) 200

[…]

Flap full (37) 165

 

Flap schedule during descent

Flap 1 (7) 200

Flap 2 (10) 190

Flap 3 (20) 170

[…]

Flap full (37) 150

 

Tire ground speed limit

Max. speed 195

[mlaban 0]

Thanks for the numbers.

 

This should be close to what you can use in Infinite Flight. We're working on the weight and balance system so you can tweak the total weight of the planes.

 

Just FYI, these speeds are not part of the flight model, not more than they are in real life. We set the weights, wings specifications and see how the plane flies, kind of like what happens in real ife. We don't set a "stall at 125kts with flaps 25 degrees"

 

Matt

[Ziegenhorn 0]

Team,

 

I have also looked up the E175 to enjoy those commuter flights in the LAX area.

 

BuZ

____________________________________

 

 

Embraer E175

 

Assumptions

Speed in KIAS

Weight [constant] 39,000kg/86,800lbs

Pressure altitude sea level

Static air temp. © -40 to 32

No icing conditions

 

Abbreviations

V1 Take-off decision speed

V2 Take-off safety speed

VAC Approach climb speed

VAPP Approach speed

VFS Final segment speed (flaps and gear retracted)

VR Take-off rotation speed

VREF Landing reference speed

 

Take-off speeds

V1 VR V2 VFS

Flap 1 7 151 157 159 207

Flap 2 10 143 150 154 207

Flap 3 20 129 129 133 207

 

Landing speeds

VFS 204

VAC Flap 2 10 169

VAC Flap 3 20 149

VAPP VREF + 5 + wind component

VREF Flap full 37 130

 

Max landing gear operation/extended speeds

Retraction 250

Extension 250

Extended 250

 

Maneuvering speeds

VA 240

 

Maximum flap position extended speeds

Flap 1 7 230

Flap 2 10 215

Flap 3 20 200

[…]

Flap full 37 165

 

Flap schedule during descent

Flap 1 7 200

Flap 2 10 190

Flap 3 20 170

[…]

Flap full 37 150

 

Tire ground speed limit

Max. speed 195

[mlaban 0]

Great, thanks again

 

We're tweaking some of the flight models for a future update, we'll try to make sure those match.

 

--

Matt

[varignet 1]

an automated suggested to/ landing speed number on screen would be welcome to all acs.

L