Am I the only one who thinks the takeoff rolls in he sim are far to quick for most aircraft in the sim?  I haven't flown the DC-6 yet but, most seem to leap into the air.  Tonight I was watching a YouTube video following takeoffs from Chicago Ohare and I notice that while watching the sting of planes, most of which we have in the sim, they all seemed to be roll for the 20-25 second range before they rotated.  A FedEx Airbus only took 18 to get airborne.  Are any of you guys doing anything to modify this or just using reduced takeoff power settings?

Mike

 

1 hour ago, morso484 said:

Am I the only one who thinks the takeoff rolls in he sim are far to quick for most aircraft in the sim?  I haven't flown the DC-6 yet but, most seem to leap into the air.  Tonight I was watching a YouTube video following takeoffs from Chicago Ohare and I notice that while watching the sting of planes, most of which we have in the sim, they all seemed to be roll for the 20-25 second range before they rotated.  A FedEx Airbus only took 18 to get airborne.  Are any of you guys doing anything to modify this or just using reduced takeoff power settings?

Mike

 

Are you flying with default loads with half tanks and little to no cargo?  Lightly loaded aircraft, in the sim and real life, will tend to leap into the air.  Load the aircraft with full tanks and a decent cargo load, and you will find the opposite end of the runway approaching you at an alarming rate before you rotate.

1 hour ago, morso484 said:

Am I the only one who thinks the takeoff rolls in he sim are far to quick for most aircraft in the sim?  I haven't flown the DC-6 yet but, most seem to leap into the air.  Tonight I was watching a YouTube video following takeoffs from Chicago Ohare and I notice that while watching the sting of planes, most of which we have in the sim, they all seemed to be roll for the 20-25 second range before they rotated.  A FedEx Airbus only took 18 to get airborne.  Are any of you guys doing anything to modify this or just using reduced takeoff power settings?

Mike

 

Technically, there are a lot of variables.  You don't know the takeoff weights and thrust derates used in the video.  So a heavily loaded aircraft on a long runway with an aggressive (but safe) derate may take 2-3x the time as a lightly loaded aircraft with full rated thrust.  You wouldn't typically fly the latter in commercial revenue flights, but it's the situation we get a lot in the sim.

With that said, yes I think there are issues.  I have flown primarily the CRJ and FBW A320.  If flown by the numbers, they seem stuck to the runway for a little bit after Vr, then pitch quickly at breakaway, leading to poor first segment climb. 

I had broached this after the CRJ release, as this aircraft seemed particularly affected.  There seemed to be some consensus that a good flight model could really help, but there were also some sim issues.  I've seen some finger pointing to ground effect, but I'm not sure that alone explains these issues.  I am also unsure if GA is affected, as I have made very few flights in GA.

Edited July 24, 20214 yr by ESzczesniak

Fly the DC6, you won't "leap into the air". 

Or the JF Turbo Arrow. No leaping here either. 

You're talking about acceleration to Vr? This is actually one of the things that's pretty easy to get right in a desktop flight sim. 18 seconds isn't farfetched. Airliners being re-positioned or ferried with a time crunch on the crews FDP can get in the air in less time.

The sim doesn't have vertical winds yet, AFAIK. It also does a poor job of simulating cross wind component. (When the gear leaves the ground, you will often see an instant, massive spike in crosswind component.) The aircraft in the sim also have an issue where they kind of dance around the CoG in a manner I can only compare to an RC plane with low resolution flight controls.

All the issues aside, the time it takes from take-off thrust to rotate isn't incorrect here. I'd be surprised if it varied at all between XP11, P3D and MSFS since it's so easy to get right. One thing you should note is most sim pilots just slam the throttles to the stop. You'll often see red-lined or 110% N1 when you watch youtube videos of simmers flying. Obviously no one does that in real life.

Thanks to all for the input.  When I fly, I tend to fly the plane light, rarely with full fuel tanks or loads so that makes sense.  I agree in some videos people slam the throttle to the firewall.  I guess some parts common sense throttle handling and some part of sim tweaks will make it right.  but this has been very helpful.

Thanks again,

Mike

 

21 hours ago, Bobsk8 said:

Fly the DC6, you won't "leap into the air". 

Well, you "could", but then you'd come down quickly too.  🙂 

On 7/23/2021 at 8:27 PM, morso484 said:

Am I the only one who thinks the takeoff rolls in he sim are far to quick for most aircraft in the sim?  I haven't flown the DC-6 yet but, most seem to leap into the air.  Tonight I was watching a YouTube video following takeoffs from Chicago Ohare and I notice that while watching the sting of planes, most of which we have in the sim, they all seemed to be roll for the 20-25 second range before they rotated.  A FedEx Airbus only took 18 to get airborne.  Are any of you guys doing anything to modify this or just using reduced takeoff power settings?

Mike

 

That take off time makes sense.  Boeing says, a lightly loaded 777 can accelerate from zero to 60 mph (96 kilometers per hour) in six seconds.  Once the aircraft is rolling the acceleration will significantly increase to Vr. 

15 hours ago, Tierborn said:

That take off time makes sense.  Boeing says, a lightly loaded 777 can accelerate from zero to 60 mph (96 kilometers per hour) in six seconds.  Once the aircraft is rolling the acceleration will significantly increase to Vr. 

Cool to know that my car can out perform a 777 0-60.  After that…not so much 🙂