Ab.400 From , joined Dec 1969, posts, RR: Posted (14 years 3 months 4 days 16 hours ago) and read 2573 times:
when I flew on BAe146, I mentioned that there was no thrust-reverse during both landings. After I looked at the engines it seems that they have no flaps to do so. Is it because of the relatively light-weight of this AC compared to other jets (B737, A320 and so on ) that they just don´t need this option ?
Almbluzman From United States of America, joined Dec 1999, 182 posts, RR: 1
Reply 2, posted (14 years 3 months 4 days 15 hours ago) and read 2434 times:
hey ab. 400 -
i posted a question a while ago about why the tail cone on a 146 splits open on landing. apparently, the tail cone splitting acts as a sort of speed brake. also, the 146 has spoilers all along the upper wing surface. these two design features allow the 146 to land without the usage of thrust reversers which help it get into smaller airports with more stringent noise restrictions. hope this makes sense - otherwise please correct me!!!!
Buzz From United States of America, joined Nov 1999, 697 posts, RR: 22
Reply 3, posted (14 years 3 months 4 days 4 hours ago) and read 2384 times:
Hi AB 400, Buzz here. Sir VC-10 has it mostly right. There's that split speed brake up the tail. It's useful.
But the BA146 is fairly lightweight, has heavy duty brakes, and a low approach speed. So wheel brakes are adequate to get her slowed down.
The impressive array of wing spoilers spill enough lift so the wheels have more weight on them, more weight so she skids less from 120-60 knots.
Thust reversers are needed when you are really heavy say 4 or 5 hours of fuel aboard. Then if you reject a takeoff you will probably stay on the runway. The brakes on all the larger airliners will get you stopped without thrust reverse ONCE. You'll have orange-hot brakes and the tires will melt off the rims, but you'll survive....... assuming the guys who have to fix airplanes are in a reasonable mood.
Buzz Fuselsausage: Line Mechanic by night, DC-3 Crew Chief by choice.