Hide/Show Archive Navigation.

All News

April 17, 2011

ANN's Daily Aero-Term (04.17.11): Lapse Rate

Lapse Rate The change of an atmospheric variable, usually temperature, with height. A steep lapse rate implies a rapid decrease in temperature with height and is a sign of instability.

Aero-Linx: Army Aviation Association of America The Army Aviation Association of America (AAAA) was formed in early 1957 by a small group of senior aviation officers in the active Army, the Reserve Forces of the U.S. Army, and Industry. Modeled after several of the professional-technical societies in existence, the AAAA has grown rapidly, receiving membership support of the majority of those military and civilian persons having an interest in this segment of the Armed Forces. AAAA started with 1,407 members and just two chapters, both at Fort Rucker. It has grown now to more than 14,700 members and more than 66 chapters worldwide.

"This additional aircraft allows us to engineer the program's optional avionics upgrade concurrently with the Williams International FJ44-4A engine integration... This will keep the momentum going on the certification in order to meet the growing demand from our customers." Source: Christi Tannahill, Hawker Beechcraft vice president, GCS, discussing the revelation that the Hawker 400XPR development program was getting a boost by Hawker Beechcraft Global Customer Support (GCS) with the their decision to add a second aircraft to the test program. This aircraft will be used primarily to develop and certify various avionics upgrade options.