MEMBER ALERT: AOPA will be closing at 1:45 p.m. Eastern on Dec. 6 and will reopen at 8:30 a.m. Eastern on Dec. 9.
May 17, 2013
Question: What is a stoichiometric mixture?
Answer: A stoichiometric mixture is the ratio of air to fuel which, when combusted, results in all elements of the mixture being used without any elements left over. Combustible mixtures range from an air-to-fuel ratio of about 8:1 to 18:1. However, a stoichiometric mixture has a ratio of 15:1. While this mixture will result in the fewest combustion byproducts, it may not be advisable to operate your engine at the stoichiometric ratio. Such a mixture may result in the peak exhaust gas temperature. Refer to your pilot's operating handbook for specific guidance on setting your aircraft's mixture. For more on leaning technique, see this article from Flight Training magazine.
Aircraft Components and Gear
NetJets has added a new safety feature to its long-range fleet: a doctor who is always in.
The Flight Data Systems GT-50 G-meter is now available for certificated aircraft.
The FAA has approved a system for attaching electronic devices to the wingtips of many Cessna and Piper aircraft.
AOPA thanks our members for their continued support in protecting the freedom to fly.