Ok guys after take of please what’s acceleration altitude and what speed should I be at before getting to 250kts and what altitude should I be at before getting to 250kts please help guys im confused
Acceleration altitude is usually around 1000-1500ft after takeoff (sometimes there will be departure procedure constraints as well).
Acceleration is usually from V2 + 10-20kts up to 250kts (unless there is a departure speed constraint).
This is not constant. It will vary depending on how heavy you are, what rate of climb you can achieve while accelerating, etc…
I’ve noticed you’ve been creating many topics on how to properly operate aircraft. While it’s great that you want to learn how to fly realistically, clogging up the forum isn’t exactly the best thing. I kindly suggest you to please check the User Guide, especially the Flying Guide section, if you haven’t done so already. I’m sure 90% of your questions have already been answered there:
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So I maintain v2speed plus 10-20knots ?
So after this when do I start accelerating to 250?
When you reach acceleration altitude…
Ohhh that’s about 1500 agl
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Yes, @Derrick778 please check the user guide.
In addition to what has been mentioned above, there are also noise abatement procedures in use at many airports across the world that aim to reduce an aircraft’s noise footprint on departure:
- NADP 1 - minimizes noise close to the airport. In the event of an engine failure, the engine-out acceleration and departure procedure will be initiated at 800ft - otherwise in normal circumstances takeoff thrust and V2 + 15-20kts will be maintained up to 1500ft; where climb thrust is selected, but the same speed and configuration are to be maintained up to 3000ft where acceleration takes place.
- NADP 2 - minimizes noise in areas further away from the airport. Both thrust reduction and acceleration take place simultaneously, between 800 and 1500ft - where flaps are retracted and the desired fourth segment climb speed is achieved.
**all altitudes mentioned are in AGL.
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Finally do I use auto pilot to maintain this speed until I get to 1500 agl? I’m confused
I don’t - I don’t engage autothrottle until I reach 250kts. I just use pitch to maintain speed and then accelerate.
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Hmmm so v2 plus 15 0r 20
Is if my v2 speed is 160 I will add 20 to it which is 180 so basically I will maintain 180 till acceleration altitude ok
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Since the current A/T in IF does not have an “N1” mode or similar arming of the system (see “autothrust BLUE” on Airbus aircraft), the answer is no - manually maintain takeoff thrust until thrust reduction altitude.
Yes, you should ideally be pitching for V2 + 15-20 after liftoff.
Thanks everyone I’m learning lol I just accelerate to 250knots straight after take of lol
Ok so this speed is also known as the initial climb speed ?
That is correct.
I agree with you but there is just something about community answers that sticks.
See how @BennyBoy_Alpha explained to him? He won’t get that in the user guide.
I clogged up the forums when I was new and I also read the user guide. Most of what stuck with me was what I learnt from the community.
The user guide is great and it’s encompasses everything one needs to know but the forum is another great way to get “boot on the ground” info.
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I just did a flight now vr was 154 v2 was 161 I rotated and pitched for 15 degreee but then the speed stopped at 161 and it started dropping speed unable to get to the v2 speed plus 15-20( I got to v2 speed which was 161 but couldn’t go higher than that) I just need more clarity on how to do this
I’m very glad that these fellas are helping you out, but I also just wanted to add a reminder that a lot of this information is already in the forum. For instance looking through the ground school tutorial category, or searching up topics about a certain aircraft. For almost every aircraft in the sim, a data topic has been made by some pretty dedicated sim pilots who have done lots of testing to figure out numbers for these aircraft. Not to say that you don’t have valid questions, you very much do, but perhaps take a look at the resources here on the forum before posting future topics, as they may have the answer you’re looking for right there!
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For this, you might have rotated too fast. Remember, if your speed isn’t increasing or you aren’t climbing, your angle of attack is too steep, and you should pitch down right away to a less steep angle
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I was heavy I was at 572,400 on the A380