VNAV
In aviation, Vertical NAVigation is an autoflight function which directs the vertical movement of an aircraft (i.e. gains or losses in its altitude).
If used in the cruise, VNAV causes an aircraft to climb or descend according to a vertical elements of a pre-programmed FMS (flight management system) flight plan. The first aircraft to feature this use were Boeing 757 and 767 airliners in 1982.
When used on approach to landing, VNAV follows a calculated approach path from a Final Approach Fix or Waypoint to the runway, ie waypoints within the FMS navigation database. The path can either be based on stored database altitudes as displayed on the altimetry system ("Baro VNAV"), or as corrected within more advanced FMS equipment for temperature errors: significantly low temperature otherwise causing a shallow approach. During final landing approach, altitude must be controlled more accurately than heights referenced to Mean Sea Level (MSL) as barometric altimetry provides. An ILS Glide Slope signal originating from the landing point provides needed vertical alignment down to the final 100 ft. Commercial pilots rely on visual cues, and a down-looking radar altimeter annunciator that calls out Above Ground Level (AGL) height ("50", "40", "30", "20", "10"), in order to time the flare seconds before touchdown.
Podcasts:
-
by Viennie V
For You
by: Viennie VI'm aimin' with my loaded gun
I'm searchin' for the perfect one
I'm findin' me a love that's right
Before the night is over
I'm chasin' down a pure heart
I'm callin' out to where you are
I'm sendin' out a single flare
I feel you gettin' closer... closer
[Chorus]
I would move the world for you
If you ever asked me to
Circle 'round the sun and moon
I would move the world for you... for you
Boys they tell their silly lies
And girls they get so teary eyed
I swear I thought of giving up
The dream of love forever
Sayonara to the cheats and fakes
'Cause tonight I'm gonna raise the stakes
I'm wishin' on a falling star
To draw our hearts together... together
[Chorus]
I would move the world for you
If you ever asked me to
Circle 'round the sun and moon
I would move the world for you
I would move the world for you
If you ever asked me to
Circle 'round the sun and moon
I would move the world for you... for you
Ohhh, yeah
[Bridge]
It's like I got a second wind that's kickin' in
I'm braver than I've ever been
If what I feel is finally real
Then I know
[Chorus]
I would move the world for you
If you ever asked me to
Circle 'round the sun and moon
I would move the world for you
I would move the world for you
There's nothing that I wouldn't do
Race across the midnight blue
I would move the world for you
I would move the world for you
If you ever asked me to
Circle 'round the sun and moon
I would move the world for you
I would move the world for you
There's nothing that I wouldn't do
Race across the midnight blue