Unmanned Aerial Vehicles (UAVs) have played vital roles recently in both military and non-military applications. One of the reasons UAVs today are unable to routinely fly in US National Airspace (NAS) is because they lack the sense and ability to avoid other aircraft. Although certificates of authorization can be obtained for short-term use, it entails significant delays and bureaucratic hurdle...

Widespread criticism of the ANEF system to predict aircraft noise impacts has lead to the use of supplementary tools (N70, NXX, 10+,TA, daily ANEF). Do these tools work? Are they of benefit to the community or the aviation industry? Do they add confusion? Are they appropriate for military aircraft or general aviation? Australian Standard AS2021 [1] considers in the first instance the suitabilit...

The high noise levels associated with full-scale military aircraft result in nonlinear propagation, which results in acoustic shock formation and can alter noise perception. This propagation has been modeled for other aircraft but previous studies have been limited in scope, showing results for only select engine conditions and angles. Recent data measured near an F-35B allow for a more complet...

Radar warning systems are found in all modern fighter aircraft and their main purpose is to warn pilots of enemy military units such as radar stations, aircraft and missiles. Testing these systems for fighters in real life is an expensive, complex and somewhat dangerous task. Hence engineers aim to test these systems in an artificial environment by the use of software in order to simulate hour-...

The maintenance of military aircraft is complex and exhaustive, requiring an accurate training program. This process is not fault tolerant and requires certification renewal periodically. Furthermore, the process involves many professionals and resources, requiring phases of maintenance and verification of the tasks. Cooperation between professionals in the overall process is essential and requ...

One of the major issues from a structural integrity point of view of the aircraft structure is an appropriate health monitoring technology delivery for the damage tolerant philosophy. This paper presents a development of a system for fatigue crack growth monitoring and early damage detection in the PZL – 130 ORLIK TC II turbo-prop military trainer aft structure. The maintenance system of the ai...

In the beginning, there was FORTRAN, and it was... not so good. But it was universal, and all flight simulator equations of motion were coded with it. Then came ACSL, C, Ada, C++, C#, Java, FORTRAN-90, Matlab/Simulink, and a number of other programming languages. Since the halcyon punch card days of 1968, models of aircraft flight dynamics have proliferated in training devices, desktop engineer...

The ability to detect and predict corrosion damage in its early stages could lessen the chances of catastrophic failure in aging, over-extended aircraft; thereby providing a safer and more reliable transportation system for both civilian and military sectors. This is especially critical now as transportation providers attempt to meet the increased expense of repairing aging aircraft with smalle...

Unmanned Aerial Vehicles (UAVs) have played vital roles recently in both military and non-military applications. One of the reasons UAVs today are unable to routinely fly in US National Airspace (NAS) is because they lack the sense and ability to avoid other aircraft. Although certificates of authorization can be obtained for short-term use, it entails significant delays and bureaucratic hurdle...

An analytical wavepacket-based jet noise model has been applied for the first time to highperformance, military aircraft noise. Ground-based acoustical measurements were made of a tethered high-performance military aircraft with one engine cycling through four engine conditions. The resulting spectra have been decomposed into fine and large-scale similarity spectral components. The spatial dist...