The Solar-Electric Survey Aircraft (“SOLESA”), is a highly cost effective and efficient piloted aircraft platform with reasonable payload and endurance focused on medium altitude missions. The proof of concept 15-meter wing span flight test aircraft has completed two sets of tests to qualify aircraft handling. Commercial aerospace and defense customer discussions are taking place.

The Materials

Similar to our other eFlyer aircraft programs, Solesa utilizes light-weight composite structure, clean aerodynamics, and solar electric propulsion systems.


The Solesa proof-of-concept aircraft is piloted allowing for immediate payload integration while the flight test program matures. Later we will examine a potential un-piloted configuration, which is called StratoAirNet.


Silent Falcon Solar Electric UAV

Bye Aerospace provides design, research and engineering support for the Silent Falcon UAV being developed by Silent Falcon UAS Technologies. The Silent Falcon is a solar electric UAV utilizing stored electric power, thin film solar photovoltaic (PV), high efficiency 6 blade propulsion system and other technologies to enhance its very long endurance, quiet operations and zero emissions. An efficient electric motor provides the Silent Falcon with appropriate climb rates and efficient cruise which facilitates access to areas requiring surveillance. The easily transportable Silent Falcon system is very quiet with low thermal signature to reduce detection.  Silent Falcon began initial customer deliveries in 2015. The combination of remarkable persistence, payload and reduced acquisition and operating cost over similar-sized systems gives the Silent Falcon a significant advantage over competitors.


Potential applications include homeland security, and military visual and thermal tactical reconnaissance. Potential civil applications include high security facility surveillance, pipeline and power line inspection, aerial law enforcement, forest fire detection, weather monitoring and aerial photography (see or for system purchase inquires


Li-Ion batteries, thin film photo-voltaics, advanced efficient propulsion system – GPS, electric autopilot and servo-control – Proprietary ISR sensor gimbal with daylight and low light video optics – Gross weight in the 30 lbs weight class with with cruise up to 45 knots – Flight Endurance 5 to 7 hours