B737 Question

[QSK?]

Can anybody give me typical climb out speeds and RoC for a B737/767 (in either KIAS or KTAS) at 80% MTOW and at MTOW for each aircraft under ISA, ISA-20 and ISA+20?

I'm not a jet jockey, so try and put it in simple pilot terms please.

Thanks

[piontyendforward]

You need to be way more specific on which models you are talking about, the B737 has 9 base models and often two engine sizes available for each base model. They are all very different eg the 737-200 with the dash 7 engine would climb at 2500 fpm at 50 odd tonnes the climb speed being somewhat irrelevent, as the all climb about 280 to 300 kts before cross over to Mach. The B737-200 with dash 15 non hush kitted engines would do about 3500 fpm, and the dash 17 about 4100 fpm. (approx ISA conditions)

The 300 series has 3 engine outputs 18500 lbs, 20000 lbs and 22000 lbs thrust, and have similar differences in performance, a 22K 300 will do 4500 fpm at the same weight as a 200. All at approx same atmospheric conditions. I dont know many NG pilots but suspect it could do better than that.

The 767's are even more different, as the max weights between different operators vary greatly. The QF 300 series are a max about 175 tonnes and AirNZ about 185 tonnes MTOW the engine sizes are all different as well. Not sure of the configuration of the QF 300's ex BA as they are different again.

[Soulman]

Was speaking to a QF 737 Captain @ BNE a few weeks ago, and he said that out of their fleet (737-300, 400 & 800's), that the 737-300 had the best performance with regard to climb. From memory, it was to do with the dimensions of the wing on the 300 and the all important power-to-weight ratio.

Funnily enough, the NG's have a larger wing, but not larger powerplants to compensate (I think all variants (3,4,5,6,7 & 800) are powered by the same CFM56's). Have also heard of small problems regarding VNAV descents on the NG's, due to the shape of the wing.

Hope this helps,

Soulman.

[puff]

A lot of the guys seem to feel that NG stands for No Good!

[The Bullwinkle]

A lot of the guys seem to feel that NG stands for No Good! Did these "guys" happen to mention exactly what was no good?

[puff]

Mainly poor build quality in comparison to the classics, apparently the dash boards rattle and move and are just plagued with a lot of small niggling 'quality control' issues. Don't shoot the messenger just going on what a few DJ guys have told me

[The Bullwinkle]

I wasn't shooting the messenger. On the contrary, I was genuinely interested, and was just looking for a bit more information.
Overall, I don't think that it can really be called No Good. It does have some redeeming features.

[QSK?]

pointyendforward:

Thanks mate, eloquently, and simply, put. Much appreciated.