Re: V speed list

Date:         30 Jan 97 00:36:26 
From: (Andrew Somers)
Organization: Myndex
References:   1
Next article
View raw article
  or MIME structure

In article <airliners.1997.240@ohare.Chicago.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

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

Andy's Home Page: