Start engine with VENT

[wolf5]

We can start engine while switch is set to "vent", "G" or "D" but if i understand correctly, "vent" is "ventilation" (false start) ?

 

We should'nt be able to start engine in this position and RPM should be stuck to 11%.

 

Vent is like to start engine but without add fuel. May i'm wrong.

[Toertchen]

I think it is not yet implemented.

According to the Flight Manual from Dassault Aviation, you can dry the engine if you put the switch to the VENT-position and press the start button.

The engine spools up to about N19% and stops after 35 seconds.

 

Also in an emergency situation, you put the switch from G or D to VENT (put off ignition).

 

Im not french, so eventually its only the half of the truth.

[Fishbed-21]

In the pilot manual are described 2 ways to start up the Mirage2000.

The first is with the use of a GPU. So you must select G or D depending on the position of the GPU from the aircraft (left or right).

The second one is without using GPU and is called (ventilation Seche) dry ventilation. In this case you should put the switch on Vent position.

[wolf5]

As far i know, a "ventilation" do not permit to start engine, just make it spools up until x% then stop it.

 

When you want to clean up engine, you make a "ventilation" while this time a mechanical inject a cleaning product, then you stop engine.

 

Maybe can confirm or not it's the same in M2000

Edited January 3, 2016 by wolf5

[jojo]

In the pilot manual are described 2 ways to start up the Mirage2000.

The first is with the use of a GPU. So you must select G or D depending on the position of the GPU from the aircraft (left or right).

The second one is without using GPU and is called (ventilation Seche) dry ventilation. In this case you should put the switch on Vent position.

 

No.

 

You have 2 igniters for redundancy, and you switch G/ D to have even wear between the 2.

 

Vent is mostly to dry out engine in case of missed start.

 

If you try to restart with fuel in engine you may overheat.

[Toertchen]

In the pilot manual are described 2 ways to start up the Mirage2000.

The first is with the use of a GPU. So you must select G or D depending on the position of the GPU from the aircraft (left or right).

The second one is without using GPU and is called (ventilation Seche) dry ventilation. In this case you should put the switch on Vent position.

 

Don't think so.

It is in RAZBAM-Manual (suspect to change) a little bit confusing. They didn't wrote that you must select G or D depending on the position of the GPU, although they write you have "[...] connectors for external power supply"(page 32 on RAZBAMs Flight Manual).

In the french version (sure only an extract of a part from the original one) they wrote "L'avion est équipé d'une [not de deux] prise de parc pour l'alimentation extérieure en courant alternatif."(page 16, Mirage 2000-C Manual Pilote). It would be negativ for the maintenance-costs, wight and place if you have more than one connector.

 

RAZBAM also wrote "[...] although a Power Cart is preffered to prevent draining the battery of all power"(page 24 on RAZBAMs Flight Manual). So you start your engine always with the battery, the GPU only supports it (presumably by parallel connection).

 

Btw.: here you can see the one described power connector:

 

Edit:

"- On procède comme pour une mise en route, mais on laisse le sélecteur bougies sur ventilation et on ne passe pas la manette sur ralenti.

- N se stabilise à~19%, le démarreur se coupe automatiquement après 35 secondes."(page 9, Mirage 2000-C Manual Pilote)

The procedure is as for a startup, but you select the VENT-Position to dry the spark plugs.

N stabilizes at around 19%, the starter switch automatically shut down after 35 seconds

Edited January 3, 2016 by Toertchen

[Fishbed-21]

"- On procède comme pour une mise en route, mais on laisse le sélecteur bougies sur ventilation et on ne passe pas la manette sur ralenti.

- N se stabilise à~19%, le démarreur se coupe automatiquement après 35 secondes."(page 9, Mirage 2000-C Manual Pilote)

The procedure is as for a startup, but you select the VENT-Position to dry the spark plugs.

N stabilizes at around 19%, the starter switch automatically shut down after 35 seconds

 

Yeah exactly I was referring to this, but I had misunderstood. In fact the VENT position is also used for interrupt the start up.

"Passer la manette sur STOP"

"Selecteur buogie sur VENT"

"Attendre l'arrete automatique du demmareur"

So definitely the VENT is not used for start the engine.

My fault on the previous post!