Documents tagged "Mmo"
Found 3 documents with this tag
EFTA02491138.pdf
The document discusses aircraft systems related to cabin temperature control and performance limits during ascent. Key topics include bleed air management between packs, altitude-controlled valves, and the impact of atmospheric pressure on system operation. Jeffrey and Larry discuss potential solutions for an in-flight issue, with a focus on testing individual bleed air components.
EFTA02491093.pdf
The document discusses flight-related issues with an aircraft, focusing on engine performance and cabin pressurization systems. Jeffrey E. and Larry Visoski are involved in discussing potential problems and solutions related to bleed air and altitude control systems.
EFTA02492557.pdf
The document discusses the limitations of aircraft performance, specifically focusing on airspeed and fuel efficiency as altitude increases. It explains that up to 28,000 feet, airspeed is limited by indicated air speed (Vne), but above that it is limited by Mach number (Mmo). The text also mentions that colder air at higher altitudes can improve engine efficiency due to greater charge weight. The discussion concludes with the concept of "coffin corner," where an aircraft reaches its maximum altitude and cannot climb further without sacrificing speed or using high-lift devices, which would increase drag.