MEMBER ALERT: AOPA is closed today, Dec. 10, due to inclement weather and will reopen Dec. 11 at 8:30 a.m. Eastern.
October 28, 2013
Question: In terms of reciprocating engines, what is a compression ratio?
Answer: The compression ratio of an engine is the ratio of the volume of space in a cylinder when the piston is at the top of the stroke compared with when it is at the bottom of the stroke. A higher compression ratio generally means higher engine efficiency.
Contemplating IFR flight scenarios for airports like Delta, Utah, is excellent review for any instrument pilot. That's because briefing for a flight into and out of Delta covers bases unlikely to be encountered on your next two-hour tour of your home field approaches.
Cessna reports "strong deliveries" of the new TTx since being awarded an FAA type certificate in June, and Brazil has followed suit.
AOPA thanks our members for their continued support in protecting the freedom to fly.