CAPTAIN SIM FORUM
757 Captain III >> 757 Captain III - Bug Tracking >> SYSTEMS & DYNAMICS
https://www.captainsim.org/forum/csf.pl?num=1576518392

Message started by Captain Sim on Dec 16th, 2019 at 5:46pm

Title: Re: SYSTEMS & DYNAMICS
Post by CaptLE on May 23rd, 2020 at 10:47pm
(FSX 1.503)

Aircraft vertical speed far exceeds -1250fpm during a cruise descent.

Manual:
(Part II, pg. 443/444)
CRUISE DESCENT
A VNAV cruise descent is commanded at the current cruise speed and approximately 1250
feet per minute rate of descent.
The autothrottles adjust thrust to maintain the target descent rate; pitch maintains the commanded speed.
Thrust levers can be manually positioned to adjust the descent rate.
-----

Observation:

The aircraft descends at 3000fpm during a CRZ DES of 2000ft between FL360 and FL340, 94nm before the original T/D.
This greatly exceeds the quoted 1250fpm approximate descent rate.

cs757_crz_des_001.JPG ( 348 KB | 22 Downloads )

CAPTAIN SIM FORUM » Powered by YaBB 2.6.0!
YaBB Forum Software © 2000-2020. All Rights Reserved.