SAE ARP210A-2014
Definition of Commonly Used Day Types (Atmospheric Ambient Temperature Characteristics Versus Pressure Altitude)
- Standard No.
- SAE ARP210A-2014
- Release Date
- 2014
- Published By
- SAE - SAE International
- Status
- 2014-12
- Latest
- SAE ARP210A-2014
- Scope
- "Hot Day""@ ""Tropical Day""@ ""Standard Day""@ ""Polar Day"" and ""Cold Day"" are part of the lexicon of the aircraft industry. These terms are generally understood to refer to specific@ generally accepted characteristics of atmospheric temperature versus pressure altitude. There are also other@ less well-known days@ defined by their frequency of occurrence@ such as ""1% Hot Day""@ ""10% Cold Day""@ or ""Highest Recorded Day"". These temperature characteristics have their origins in multiple sources@ including U.S. military specifications which are no longer in force. Purpose This document is intended to preserve the commonly used day types in an accessible form for future use@ make recommendations for their consistent usage@ and collect the data in a single format. Field of Application These day types find their most frequent application in aircraft and propulsion system computer simulations. They do not impose any requirements on system design@ but rather form a common frame of reference for defining the conditions under which various types of analyses are to be performed. Day types provide both a convenient mechanism for setting up computer program input and a convenient shorthand for discussing operational environment. For example@ an airframe company might request engine data on a Hot Day to determine hot-day aircraft payload or range capability. Except for Standard Day@ the source data for this document covers a pressure altitude range from sea level to either 100000 ft (30.48 km) or 30 km (98425 ft)@ depending on the source. All tables in Section 5 have been extended to -2000 ft. (The ambient pressure at -2000 ft is higher than the highest barometer reading ever recorded at sea level.) The tables in Appendix A have not been extended."
SAE ARP210A-2014 history
- 2014 SAE ARP210A-2014 Definition of Commonly Used Day Types (Atmospheric Ambient Temperature Characteristics Versus Pressure Altitude)
- 2011 SAE ARP210-2011 Definition of Commonly Used Day Types (Atmospheric Ambient Temperature Characteristics Versus Pressure Altitude)
- 2007 SAE ARP210-2007 Definition of Commonly Used Day Types (Atmospheric Ambient Temperature Characteristics Versus Pressure Altitude)
