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Airbus 320 take off with V2 not inserted

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Airbus 320 take off with V2 not inserted

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Old 13th Jul 2014, 06:16
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fra
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Airbus 320 take off with V2 not inserted

Cari colleghi.
Vorrei chiedervi gentilmente un chiarimento sulla procedure decollo senza V2.
Da Fcom Pro-Nor-Srp possiamo verificare che :
After takeoof non avremo l'srs mode ma v/s che manterra' la current speed.
A tal fine e' corretto decollare con toga poi impostare 15 gradi ?
I FDs seguiranno un vertical speed rispetto alla current speed ? In seguito all'attivazione del V/s mode quale sara' la velocita' consigliata da selezionare e pullare fino all'acceleration altitude , dopo la quale armeremo e attiveremo l'autothrust e spd managed ?

Grazie per la vostra utilissima collaborazione.

Francesco
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Old 13th Jul 2014, 07:00
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Occhio perché in V/s non é garantito che la speed venga mantenuta. Pensa ad un overpitch in decollo per esempio ee arrivi a 17', poi la vs si arma e credo sia difficile mantenere V2+10. Io andrei in open clb appena possibile.

La speed da impostare é V2+10 o V2 in caso di Eng Failure.

Un'altra considerazione da fare alla acc alt é sull'auto thrust. Verifica che la trarget spd sia maggiore alla spd attuale altrimenti armando l'auto T ti va in Idle un pó come nel caso di NO FD Take Off.
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Old 13th Jul 2014, 07:22
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If V2 is not inserted, the speed reference system (SRS) will not engage for takeoff. 5 s after lift off, V/S mode will engage. When V/S engages the current airspeed becomes the FCU target speed. To regain a normal speed target, the pilot must : SELECT the appropriate climb speed on the FCU and PULL out the knob. At ACC ALT : PUSH the A/THR pb on the FCU. SET the thrust levers to CL detent. PUSH in the SPD selector knob to get a managed speed target.


L ' FCU di solito imposta di suo 100 di speed.
Poi come dice Giggey e' consigliabile settare la speed sull FCU a250 prima di effettuare la T/reduction perche' l' auto/T si attivera' e mantterra' quanto scritto sull' FCU.
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