On DC-8s that had the type of thrust reverser seen in the image below, how did the thrust reverser work? From what I have seen it seems to me that the reverser bit would be stowed in flight, but starting on approach and on the ground the tube part would be deployed, while the actual reverser bit would only reverse when commanded. Is this true? Is there any pictures or video out there that would confirm this?
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Re: How did the thrust reverse work on the original DC-8s?
On the DC-8 -10 to -40, the buckets/ejectors were mounted on rails that slid behind the engine. By SOP (where I flew) they were extended with flap selection. This was for two reasons; one is for sound suppression, the other is that they had to be extended to be used, so they were armed on takeoff should a reject be necessary and there for landing.
Also remember that the DC-8 was not equipped with speed brakes. The reversers were authorized to be used in the air! To be used, the ejectors had to be extended first. If it was thought that might be necessary, the ejectors were extended.
In the picture you cite, they are extended. When not, they snug up behind the engine.
Also remember that the DC-8 was not equipped with speed brakes. The reversers were authorized to be used in the air! To be used, the ejectors had to be extended first. If it was thought that might be necessary, the ejectors were extended.
In the picture you cite, they are extended. When not, they snug up behind the engine.
Re: How did the thrust reverse work on the original DC-8s?
The ejector in action:
http://www.youtube.com/watch?v=qLEwEhEaOww&t=326s
A picture of it in the stowed position:
http://commons.wikimedia.org/wiki/File:KLM_DC-8-33_(7491675744).jpg
http://www.youtube.com/watch?v=qLEwEhEaOww&t=326s
A picture of it in the stowed position:
http://commons.wikimedia.org/wiki/File:KLM_DC-8-33_(7491675744).jpg
Re: How did the thrust reverse work on the original DC-8s?
Reverse thrust was available in flight, IIRC, as a speed brake.
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