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A contrails study by GE Aviation and NASA, an F-15E Strike Eagle downs drones, Iberia’s new A321XLR in service, the Phillippine Mars moves to its final destination, an airliner and a UAP come close together, Spirit Airlines files for bankruptcy, and the environmental impact of private jets. Also, AvGeeks flock to Bluesky, a STEM author at the NASM, and F-35B trials on a Japanese flattop.
The “Contrail Optical Depth Experiment” (CODEX) is a research project conducted through a NASA and GE Aerospace partnership to study the formation and behavior of contrails. Contrails are clouds of ice particles that airplanes can create when they fly through cold and humid air. Persistent contrails are thought to contribute to climate warming. The primary goal of CODEX is to accurately measure the optical depth of contrails, which indicates how much light is blocked by the contrail.
In the project, a GE Boeing 747-400 creates the contrails and NASA’s G-III research aircraft (a modified Gulfstream III business jet) follows and scans the 747’s wake with Advanced LiDAR (Light Detection and Ranging) technology to analyze the contrails produced by different engine configurations. This will hopefully lead to the development of engine technologies that reduce contrail formation.
NASA Gulfstream G-III
NASA’s Armstrong Flight Research Center in Edwards, California, operates the Gulfstream G-III aircraft, NASA tail number 804, as an aerodynamics research test bed. Work with the aircraft is funded through NASA’s Aeronautics Research Mission Directorate (ARMD) as part of the Environmentally Responsible Aviation (ERA) project under the agency’s Integrated Systems Research Program.
GE 747-400 Flying Test Bed
Since 2010, this former Japan Airlines plane has been used by GE to test new jet engines, such as the GE90, GEnx, LEAP, and the GE9X. The plane is based at Flight Test Operations (FTO) in Victorville.
An F-15E Strike Eagle shot down so many Iranian drones aimed at Israel that they ran out of air-to-air missiles. The crew was ordered to continue and use any weapon available, which left the Strike Eagle’s 20mm Gatling Gun, capable of firing around 6,000 rounds per minute. Operating this gun is said to be risky with small, low, slow-moving targets. In this instance, the F-15 did not stop the drone.