Atlamt From United States of America, joined Sep 2001, 240 posts, RR: 3
Reply 1, posted (11 years 3 weeks 2 days 22 hours ago) and read 1595 times:
Actually they all have the clamshell doors. If you look in the picture below you will see the louvers on the side of the exhaust. The clamshell doors block the flow and redirect it through the louvers.
Vh320 From Venezuela, joined May 2000, 81 posts, RR: 0
Reply 2, posted (11 years 3 weeks 1 day 23 hours ago) and read 1497 times:
Atlamt: Actually, your answer made me more confused. I've seen 100s landing and when thrust reverser is applied the clamshell doors open. Now, when the 200s apply thrust reverser, I don't see anything. Thanks anyway.. I hope someone else comes with another explanation.
HHHramp From United States of America, joined Sep 2001, 89 posts, RR: 0
Reply 5, posted (11 years 3 weeks 1 day 16 hours ago) and read 1452 times:
I can't tell that TWA 200 is actually using reversers at all. Only thing visible is the spoilers and flaps extended. The outside mechanism of the clamshell doors looks just like any other 72- or DC9 I have seen. Both the 722 and the DC9s we have at school use these type of doors.
and when deployed block and divert the airflow forward.
The other style works the same way but all of the components are internal. The doors swing together just like a clamshell but the airflow is diverted through the louvers on the side of the exhaust. I haven't been able to find a pic of the doors but if you look at the following pic the louvers are forward of the hushkit. http://www.jetphotos.net/viewphoto.php?id=64941 hope this helps.
Spacepope From Vatican City, joined Dec 1999, 2901 posts, RR: 1
Reply 11, posted (11 years 2 weeks 4 days 5 hours ago) and read 1164 times:
The re-engined 727-200s (including the last 17 or so off the line to FedEx) have reverted to the "bucket" type clamshell reversers, but only on engines 1 and 3, which are JT8D-200 series (a la MD-80) while the center is still a JT8D-17. Correct me if I am wrong, but I think for balance reasons, the #2 engine has had the thrust reverser removed, as the -200 series engines are much heavier than the originals.