Re: V speed list

Date:         30 Jan 97 00:36:26 
From:         asomers@primenet.com (Andrew Somers)
Organization: Myndex
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In article <airliners.1997.240@ohare.Chicago.COM>, cb61@aol.com (Cb61) wrote:

> I'm looking for a comprehensive list of V-speeds and their meanings.
> Any help appreciated.
>
> thanks

Here they are:

Va -- design maneuvering speed. This is the speed where a stall will occur
before the load factor will exceed strucural limitations. Thus, maximum
deflection of the controls may be performed and/or turbulent air may be
encountered safely.

   Note however that severe and extreme turbulence and wind shear may
create increases in airspeed which will exceed Va, thus using a lower than
Va speed may be indicated in these conditions.

   Also, as stall speed increases with weight, Va increases with weight as well.

Vfe -- maximum flap extended speed. The flap operating range corresponds to
the white arc on the ASI

Vle -- maximum landing gear extended speed

Vlo -- maximum landing gear operating speed

Vne -- never-exceed speed. Exceeding this speed can result in flutter,
structural failure, and general bad things happening. This is the red line
on the ASI

Vno -- maximum structural cruising speed. Also, the top of the green arc on
the airspeed indicator. Don't exceed this speed except in smooth air.

Vr -- rotation speed. I.e. the point where you rotate on takeoff.

Vs0 -- the power-off stalling speed or the minimum steady flight speed in
the landing configuration (i.e., flaps and landing gear extended) remember
this as:
VSO = V Stuff Out

Vs1 -the power-off stalling speed or the minimum steady flight speed obtained
in a specified configuration (i.e., flaps and landing gear retracted)
remember this as:  VS1 = V Stuff In

   NOTE: stalling speed increases with weight and load factor

Vx -- speed for best angle of climb. Greatest gain in altitude for DISTANCE
flown

Vy -- speed for best rate of climb. Greatest gain in altitude for TIME flown

Vglide -- best glide speed. Greatest distance flown with power off.

Hope this helps

Andy Somers
Student Pilot

--
The Universe is VERY VERY simple but FAR FAR too complex for the human mind
to comprehend. -- AMSomers 1988


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