Landing Gear Up

RE: Landing Gear Up

Also the front undercarriage can snap off if the aircraft reaches a particular altitude withs its gear down.

RE: Landing Gear Up

yes, there are limiting speeds for undercarriage retraction, otherwise over loading from pressure can occur. A more immediate effect is the destruction of any wiring or tubing located on or around the undercarriage leg.

coanda

RE: Landing Gear Up

Also i think if a pilot leaves the gear down for too long when in flight serious damage can be caused to it….. as when taking off the gear part is the part where the pressure accumiliates during take off.

RE: Landing Gear Up

One other point to consider – sometimes after landing using a lot of braking (hot ambient temperature, heavy aeroplane, short runway, tailwind, etc) the brakes will be very hot and the aircraft will require a certain amount of time (calculated from tables) before departure for things to cool down. Under these circumstances it can prove beneficial to leave the gear down for a few minutes after take off to help the airflow cool the brakes. This is also done when a brake unit has been isolated and capped off (made inoperative) as there is no automatic braking on that wheel before retraction. I f the wheel isn’t stopped from spinning it can cause a lot of friction in the wheel well and give you a fire in that area!

RE: Landing Gear Up

The way my company does it is – when the non-handling pilot sees arate of climb on the vertical speed indicator and a climbing indication on the altimeter he/she calls ‘positive climb’ to which the handling pilot calls ‘gear up’. In the event of an engine failure we would continue with the take off so there is a performance penalty if the gear is left down for too long. If the runway is long enough (or headwind strong enough to reduce groundspeed significantly) then yes the gear may well be fully retracted by the time the aircraft crosses the upwind boundary.

Good question though. I’m happy to answer any others if you want.

RE: Landing Gear Up

Once a positive climp is established then the landing gear should be retracted unless something unforseen happens in which case the landing gear may not deploy later on then it should be left down.

RE: Landing Gear Up

[updated:LAST EDITED ON 05-10-02 AT 07:34 AM (GMT)]>I think basically the gear comes up asap after takeoff, to
>reduce drag. Also, it can only withstand certain speeds
>safely, so needs to be tucked away.
>
>Btw, what are you doing in the AW forum, Kelly? 😉

Oh I tend to pop up here and in AFM from time to time 🙂

Oh also thanks for the info

Kelly

RE: Landing Gear Up

Wysiwyg can answer more definitively I’m sure, but I think the landing gear is retracted after a positive rate of climb is established, I,m sure I read/heard this somewhere, hopefully Wysiwyg can clarify.

Regards, Dazza.

RE: Landing Gear Up

I think basically the gear comes up asap after takeoff, to reduce drag. Also, it can only withstand certain speeds safely, so needs to be tucked away.

Btw, what are you doing in the AW forum, Kelly? 😉

RE: Landing Gear Up

[updated:LAST EDITED ON 04-10-02 AT 10:06 PM (GMT)]I assume there is a minimum altitude ?
You know what ? i watched this movie yesterday !!!