Sign in to follow this  
Guest bgahan

757 Way Too Fast

Recommended Posts

HI Everyone,I know it has been said here before, but this plane does seem to have way too much power. I know the real life 757 likes to fly as said here before but this is a bit much.For starters I blow right through V2+15 in no time. In fact, I'm just off the ground (like seconds) and I'm already passed my first flap retraction schedule. Here was my latest flight data:OEW = 136,940Pax/Cargo = 31,460PZFW = 168,440Fuel = 20,000GW = 188,437CG = 22%Trim = 7.00%Route, KPHX BXK2 PKE J4 TNP SEAVU1 KLAX (58 minutes)I look at my AWA speed reference book and it shows the followingV1 = 137VR = 137V2 = 144V2+15 = 159I took off from 7L in Phoenix. By the time I made the inital turn (at 4DME PXR) to head toward the first BXK fix, I was already climbing through 18,000. So this plane climbs to 18,000 in 4-8 NM? My scheduled altitude was 30,000. I made 30,000 feet in 9 minutes. I did use a de-rate of 1.71 EPR after climbing through 1,000 AGL. I have flown on many 757's just like most of us, and I can tell you that there is no way, that in real life a 757 can climb to 30,000 in 9 minutes. I know 188K GW is light but that seems a bit ridiculous.Either I am doing something wrong or this is overpowered. Or I am nuts! Any thoughts or suggestions would be appreciated.Thanks,Brian

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

Brian,I will resist on calling you nuts unless you insist :)Not being typed on the 757 I defer to those who are and who gave this plane a serious run for its money. Aside from the power required to get the plane off the blocks, the heneral concensus was that it performed pretty close to the money. That said, Rob Young the dynamics guru called me last night with a couple of minor tweaks based on additional feedback, so whilst we do listen, I'm sorry to say that in regards to climb, we have to take the word of those suitably typed and flying the real thing on a daily basis.

Share this post


Link to post
Share on other sites

Hi Norman,Thanks for the reply. I trust that you guys did your due dilegence. I can't believe though that the 757 can climb to 30,000 in 9 minutes. So I guess I am nuts. I will say though, that I am not sure whether I used the correct de-rate, b/c I don't have charts for that. However, I am concerned that I'm blowing through V2+15 and first flap retraction within seconds of being off the ground. Otherwise I would not care. Is this happening to you as well?Brian

Share this post


Link to post
Share on other sites

>Is this happening to you as well?Its the one plane that keeps me out of my Airbus. I tend to not use TOGA for departures and try to fly the plane manually to 10K hand flying the SID.Yes its tough to keep it V2+15 but not impossible.

Share this post


Link to post
Share on other sites

The British Airways Virtual fleet training captain wrote in this forum that real British Airways use TO2 and 60 degrees derate. You did not mention takeoff thrust used, but if you used TO, then no wonder this is what you saw. Secondly, you loaded your aircraft with around 140 passengers, good for a 737-700. 200 passengers with luggage weigh around 50,000 Lb, 250 weigh more. Airlines strive to carry revenue cargo, add another 30,000Lb. I'm not sure that a one hour ride is really that typical of the aircraft, although I have flown 25 minute domestic flights with it. A typical 40,000LB fuel load could be proper for 4 hour flights. Now that your weight approahes the design maximum, V speeds are higher and engines properly derated, try aircraft excess energy (the rate of increase of speed and altitude) again and tell us how it feels, is that still the famous rocket? probably not, especially in Phoenix Sky Harbor's common 40 degree centigrade air temperature, affecting airframe performance and handling, not only thrust.>HI Everyone,>>I know it has been said here before, but this plane does seem>to have way too much power. I know the real life 757 likes to>fly as said here before but this is a bit much.>>For starters I blow right through V2+15 in no time. In fact,>I'm just off the ground (like seconds) and I'm already passed>my first flap retraction schedule. >>Here was my latest flight data:>>OEW = 136,940>Pax/Cargo = 31,460>PZFW = 168,440>Fuel = 20,000>GW = 188,437>CG = 22%>Trim = 7.00%>>Route, KPHX BXK2 PKE J4 TNP SEAVU1 KLAX (58 minutes)>>I look at my AWA speed reference book and it shows the>following>>V1 = 137>VR = 137>V2 = 144>V2+15 = 159>>I took off from 7L in Phoenix. By the time I made the inital>turn (at 4DME PXR) to head toward the first BXK fix, I was>already climbing through 18,000. So this plane climbs to>18,000 in 4-8 NM? My scheduled altitude was 30,000. I made>30,000 feet in 9 minutes. I did use a de-rate of 1.71 EPR>after climbing through 1,000 AGL. >>I have flown on many 757's just like most of us, and I can>tell you that there is no way, that in real life a 757 can>climb to 30,000 in 9 minutes. I know 188K GW is light but>that seems a bit ridiculous.>>Either I am doing something wrong or this is overpowered. Or>I am nuts! Any thoughts or suggestions would be appreciated.>>Thanks,>Brian>>>>

Share this post


Link to post
Share on other sites

NormanThat is such a cool video - I've seen it a couple of times. Tried doing it with my 757 - first time I tried at 100ft, a little crash and burn...second time - at 200ft - managed it and a nice powerful climb. Did it in an AA with PW engines...nice and powerful.

Share this post


Link to post
Share on other sites

You had a 188,000 GTOW? Man you are flying that thing empty. No wonder why it climbs that quick. And yes, i bet you any money it would climb that quick if you were that light. I was flying with a guy at air canada jazz that used to fly for air transat on the 57 and he said they used to be able to peg that vsi up to 20K feet.Jack

Share this post


Link to post
Share on other sites

>I thought I best share a link sent to me by our friends over>at www.flightdecksolutions.com shows just how fast a 757 can>climb :)>>http://media.putfile.com/High-speed-flyby-Holy Smokes thats awesome! I'm a jet mechanic in the US Navy, and routinely get to witness AWESOME jet performance. That is in the realm of "pointy nose" stuff!

Share this post


Link to post
Share on other sites

As B757 Engineer...I have to say that this aircraft is really a rocket!I

Share this post


Link to post
Share on other sites

Norman,I seen that same RNZAF 757 do the flying display at the Australian International Airshow last year. I was amazed at how the pilots flew that 757. It was just like they were flying a fighter jet. On the take off run they got airborne and then did a 90deg angle of bank and then 757 was probably only 400ft off the rwy. The kept it that low and did a hight speed pass and went almost vertical. I would say at about 70 to 80 deg strait up. at the end of the climb the 757 rolled over to the left and the plane was almost right upside down! I kid you knot. That 757 hit 15,000ft in about 20 seconds! It truly was amazing to watch! It looks like that video showed the same stunt.Pete

Share this post


Link to post
Share on other sites

And I must say that to fly in and out of Eagle they need every bit of that "fighter performance" LOL. Fly a runway 25 aprach to KEGE, with a circle to land on RWY 7 -- you'll see what I mean ;-) OH! And the best part -- take off from RWY 25 :-) Fun stuff :-) The 757 is the only airliner of her size even allowed into KEGE (besides military). All others are CRJ sized or smaller.

Share this post


Link to post
Share on other sites

I wish I could save that 757 vid!Anyway, my grandfather (ret. nwa captain) flew the 757 and said it was a true rocket. You had to pull throttle way back to stay under 250, and it would be yelling at you to put throttle up.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this