Venr, Vyse

[cezzna]

Posted this earlier, FSI is teaching that VENR is the same as VYSE, if nobody here can tell me the difference where should I look. I know that it's not right, just need the evidence.

 

[mazawakhan]

OK! WTF is Venr? In over ten years of flying I have yet to hear of that one!

 

[kevdog]

OK! WTF is Venr? In over ten years of flying I have yet to hear of that one!

In over 18 years of flying I have yet to hear of that one!

 

[asayankee]

In over 18 years of flying I have yet to hear of that one!

I'm going to go out on a limb and say it's the same as what a lot of people call Vt....best climb in a clean configuration. I hink it stands for V-enroute. Just guessing though.

 

[UndauntedFlyer]

I never heard of it either...

 

[charter dog]

I had never heard of Venr until I flew Hawkers. It is never really defined in the FSI Hawker training manuals as anything but a final OEI climb speed. Venr will only be about 186 KIAS for a MGTOW (28,000 lb) 800XP. The aircraft is to be flown at this speed after reaching 1,500' AGL or running out of time on the takeoff engine limits, cancelling APR and setting max continuous thrust on the remaining engine. In practice, the -5BR engines are nowhere near limiting temps or speeds so no reduction would normally be necessary. This is a certification profile of course and bears little resemblance to the profile that would actually be flown in IMC over anything but flat ground. Venr is a performance speed like V2, meaning it's primary purpose was to establish a OEI climb profile for certification and may or may not be intended to achieve max SE ROC. Since climb gradient is our primary concern following takeoff, we would not normally accelerate to this speed until clear of all obstacles if visual, or at the minimum required IFR altitude if not. In any case, Venr is just a bit more than 1.6 Vs and would be pretty close to Vyse if that term were used. For the fullest possible explanation, post this in the tech log at PPRuNe. Guaranteed to to get you more of an answer than you bargained for!

Best,

 

[CA1900]

We use it at CommutAir -- it's defined as the single-engine enroute climb speed. In the event of an engine failure on takeoff, we climb at V2 until 400 feet, accelerate to Venr, and then climb at that speed.

I suppose it could be the same speed in some airplanes, but it isn't in ours in most cases. For example, a fully-loaded 1900 would have a Venr of 123, while Vyse is 128. Definitely not the same speed.

 

[wmuflyguy]

I'm going to go out on a limb and say it's the same as what a lot of people call Vt....best climb in a clean configuration. I hink it stands for V-enroute. Just guessing though.

or Vfs

 

[Luxor Two]

Well I guess if UndauntedFlyer hasn't heard of it, then it truly does not exist.

His Airworthiness ladies and gentlemen.

 

[Metro752]

.............zippo