SOURCE: AFI
In a recent discussion, Air Marshal Anil Chopra, a distinguished expert in air power, shed light on the transformative design principles expected in sixth-generation fighter aircraft. One of the most radical changes he highlighted is the move towards tailless configurations, marking a significant departure from traditional aircraft design.
Chopra explained that the primary motivation behind removing the tail from future jets is to enhance stealth capabilities. “All sixth-generation aircraft will be minus the tail,” he stated, emphasizing that tails contribute significantly to radar reflections. Stealth technology aims to minimize these reflections, making aircraft less detectable by enemy radar systems.
Without traditional rudders, control would be managed using other means. Chopra pointed out that horizontal surfaces could take over some of these roles, complemented by advanced technologies like thrust vectoring. “I will use thrust vectoring of the engine to maneuver left and right,” he said, suggesting that engine nozzles could be directed to provide the necessary yaw control.
Looking further into the future, Chopra mentioned the possibility of using air jets or additional airflow from the engine itself to steer the aircraft. “There are technologies like air jets which will come out of the aircraft… these jets will be used to maneuver the aircraft,” he elaborated, indicating a move towards even more dynamic control mechanisms.
The absence of a tail brings its own set of design challenges, particularly in maintaining stability and control. However, Chopra sees these challenges as opportunities for innovation.
Blending Surfaces for Reduced Radar Signature: He advocated for a design where the wings blend seamlessly into the body of the aircraft to minimize sharp edges, which are known to cause radar reflections. “Wing body blending has to be done so beautifully,” he noted, underlining the importance of aerodynamic and stealth integration.
Engine Placement and Signature Management: The positioning of the engine and its exhaust is crucial. “How do you embed your engine is very, very important because engines reflect radar energy,” Chopra explained. The internal structure of the engine, especially the compressor, acts as a significant reflector of radar waves. His suggestion to potentially move exhaust upwards to reduce infrared (IR) signatures highlights the complexity of managing multiple forms of detectability in modern aerial combat.