Open Access Open Access  Restricted Access Subscription or Fee Access

Numerical Simulation and Experimental Studies on Weapon Safe Separation for a High Speed Aircraft



One of the key differences between civilian aircraft and military aircraft is its capability to carry and release bombs. From the earliest days of aviation, when the pilot would drop simple bombs by hand, engineers have striven to develop the capability to accurately deliver weapons against targets reliably and safely. The integration of weapons on aircraft requires evaluation of multiple topics related to different disciplines such as aerodynamics, structures, avionics/software maintenance, electro-magnetic interactions, flight test instrumentation, and ground and flight tests. In addition to compatibility concerns, the release of a weapon creates issues such as the ability of the specific store to achieve safe separation and the ability of the aircraft structure to withstand the imparted loads during the ejection of store from pylon or launching phase in the presence of aircraft flow field. The key to a safe and successful store release and its trajectory prediction is to model the separation/ejection process accurately with suitable kinematic and dynamic 3D models that simulate the geometry of store motion from carriage position of the aircraft in a real world application. Present research paper discusses the pit drop tests required for pylon ejector force measurement. Pit drop tests were carried out on an instrumented store, boundary conditions of which are generated to simulate actual release of weapon from a high speed aircraft. The acceleration data thus obtained will be used to carry out safe separation studies on high fidelity aerodynamic models. Paper also discusses the kinematic simulation studies carried out to validate the experimental results.


Full Text:



  • There are currently no refbacks.