enginehistory.org

[ckuhns]

I am searching for information when the wrong ADI Fluid has caused an engine failure and a crash. I have two examples. A Flying Tiger DC-6 was forced down in New York's Jamaica Bay and a BAC one eleven in Germany crashed on the autobahn. Thanks Carl

[mksmith]

I thought the BAC One-Eleven was turbine powered, and ADI fluid was for reciprocating engines. Can ADI Fluid be the cause of a BAC One-Eleven crash?
_________________
Mike Smith

[ckuhns]

Maybe I should have used water injection for both the DC-6 and the BAC one -eleven. Water injection as used in piston engines is called ADI [anti detonation injection] Water injection in turbine engines is usually called thrust augmentation. The early Douglas DC-8 and Boeing 707 used water injection for a shorter take off run. The Republic F-105's Pratt & Whitney J75 used both water injection and and reheat. Carl

[avasko]

One little noticed form of water injection was used on international variants of the DC-8. Since no APU was on the aircraft you would be stuck with no way of starting engines if no huffer (ground air compressor)was available.
There was a long air duct which could be plugged into an aircraft that had either an APU or engines running. There were forked fingers on the plug-in fitting which held the check valve at the powered aircraft. Ran long hose to unpowered aircraft and plugged it in. Then activate pneumatics on supply aircraft. Problem was, you needed that second aircraft.
However B707 and DC-8 that might have to divert to un-equipped airports carried 3000 psi compressed air. The B707 used bottles, the DC-8 used chambers in the upper part of the MLG oleo struts. Their nbr. 3 engine was fitted with a combuster heater. Blowing 3000-psi air through a pressure reducer chills it and there is not enough energy to get the engine starter up to speed. The combuster heated the air, added energy to power the starter.
On the B707, that was it. On the DC-8 they carried a small tank ig the pylon with a 60/40 mix of methanol alcohol and water. This was sprayed into the combuster to add mass flow.
I saw it tested a few times but then the hydraulically powered compressed air pump took hours to refill the air tanks.
So not an ADI which you didn't want to use (50-50 mix), not a demineralized water as used on "Water Wagon" 707/dc-8/B747 but another drum in the yard. Never heard of any wrong stuff for that particular use.

[kmccutcheon]