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Search: Posts Made By: Prof. Engineer
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Forum: Tech Log
9th Sep 2011, 04:31
Replies: 30
Views: 17,606
Posted By Prof. Engineer

Mandated

The regulation requires a Flammability Reduction System. It is performance based. No particular System has been mandated. A few articles stated that inerting is mandated. It is not true. Read the...
Forum: Tech Log
9th Sep 2011, 04:29
Replies: 30
Views: 17,606
Posted By Prof. Engineer

Makes Honeywell money

Thanks.

However, Honeywell is the seller and not the buyer.

My interest is to learn from the buyers why would they spend their good money to buy and install a nitrogen Fuel tank inerting...
Forum: Tech Log
7th Sep 2011, 04:14
Replies: 30
Views: 17,606
Posted By Prof. Engineer

NGS Operation

Very interesting.
Sitting in the cockpit you have no idea what the system is doing and what is the state of the fuel tank.
What good is this system?
It pollutes outside air with fuel vapors as...
Forum: Tech Log
31st Oct 2010, 04:49
Replies: 30
Views: 17,606
Posted By Prof. Engineer

Flammability Reduction System is far superior...

Flammability Reduction System is far superior than a Fuel Tank inerting system. It is based on the principle that lean fuel air mixtures do not ignite. The fuel air mixture can be rendered lean by...
Forum: Tech Log
31st Oct 2010, 04:34
Replies: 30
Views: 17,606
Posted By Prof. Engineer

It is not the oxygen concentration that...

It is not the oxygen concentration that determines when hypoxic conditions may occur. It is oxygen partial pressure. At 10,000 feet altitude some people brcome hypoxic at oxygen concentration of...
Forum: Tech Log
30th Sep 2010, 03:54
Replies: 30
Views: 17,606
Posted By Prof. Engineer

Inerting a Freighter or Cargo airplane

You are right the compartments of a freighter can be inerted by using a gas that has low concentration of oxygen. It can be any gas or a mixture of gases. Engine exhaust would qualify. If engine...
Forum: Tech Log
29th Sep 2010, 04:11
Replies: 30
Views: 17,606
Posted By Prof. Engineer

Fuel tank Inerting- Vent System

In a vented fuel tank the vent has to be open at all times.

1. To discharge hydrocarbon laden ullage gas when the inerting system i operating. A cubic feet of ullage mixture has to vent out for...
Forum: Tech Log
29th Sep 2010, 02:28
Replies: 30
Views: 17,606
Posted By Prof. Engineer

Strongly suggest you read SAE paper 2009-01-3134....

Strongly suggest you read SAE paper 2009-01-3134. It may sow seeds in your very fertile mind.
Forum: Tech Log
29th Sep 2010, 02:25
Replies: 30
Views: 17,606
Posted By Prof. Engineer

Thumbs up Vent System

I do not know the changes that have been made to the vent syste. My understanding is that it impedes the airflow from one wing tip to the other. Vent is necessary for the vented fuel tank to allow...
Showing results 1 to 9 of 9


 
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