PPRuNe Forums - View Single Post - MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures
Old 11th Jun 2019, 19:06
  #339 (permalink)  
FlightDetent

Only half a speed-brake
 
Join Date: Apr 2003
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Same. gums your derived knowledge of the bus is downright impressive, but things are getting lost in translation at this moment.

Bus, in the normal law (with auto-trim available), needs no active trim input. You pull on the stick, which is spring-loaded (the greater the tilt angle the greater the wrist-force), and an accelerated "G" load pitch-up results. Assuming constant thrust, once established at the desired pitch (and lower speed) you release. The thing trims itself to a steady trajectory, which you had just commanded.

In the downgraded DCT LAW, when control surfaces movements are proportional to stick displacement, she flies exactly like a conventional aeroplane. To reach an in-trim, higher pitch + lower speed condition. a manual input on the pitch-trim wheel is required. The massive difference compared to 737-500/400 (no experience with NG) is that equivalent of classic's one full spin is about half an inch on the bus. Maybe that's where the comment of your friends comes from. You do not grab the wheel, you place the hand on it, palm down. http://www.avioesemusicas.com/wp-con...013/03/THS.jpg

I am not sure which of the two conditions you are referring to. Let's clarify that first, before talking about the "feel resistance approaching stall " / certification.

Last edited by FlightDetent; 11th Jun 2019 at 19:16.
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