primary and secondary structures of commercial aircraft.Keywords:composite materials;graphite/epoxy;aircraft;general aviation;analysis;wing;fuselage;empennage;multispars;stiffened panels;sandwich;NDE;finite ele
NASA has been using IRT for on-orbit inspection of manned flight vehicles for a number of years.9 Many researchers have also investigated the application of IRT for the rapid inspection of large aerospace components such as aircraft primary and secondary structures, spacecraft components and its su...
The total BWB structural mass is divided into the ideal load-carrying structural mass, non-ideal mass, and secondary structural mass. Structural finite element analysis and optimization are used to predict the ideal primary structural mass, while the non-ideal mass and secondary structural mass are...
An aircraft flight control system combines mechanical and electronic equipment that ensures exceptional precision and reliability in controlling an in-flight aircraft. It consists of primary, secondary, and auxiliary systems, wherein primary flight control systems are used to control ailerons, elevators,...
An aircraft surface control is an aerodynamic device that allows the pilot to adjust and control the aircraft's flight attitude. Surface control surfaces are classified into two types: primary surface and secondary surface. The primary control surfaces of an airplane include the ailerons, rudder, ...
A first embodiment of a taxi engine/secondary propulsion system incorporating features of the present invention includes a control system and control panel in the aircraft for providing starting power to the taxi engine, and can also provide primary and emergency power to the aircraft. The taxi eng...
In fighter aircraft, business jets, and other relatively high-performance aircraft, for example, composite materials have been used in both primary and secondary structures. In large commercial aircraft, however, the use of composite materials has traditionally been limited to non-critical, secondary ...
Stress: Our Structural (stress) Engineers ensure structural design integrity while targeting customer weight savings and maintenance objectives. We resolve complex challenges and have comprehensive interior and exterior structure modifications experience that includes secondary and primary structural modifications ...
2. Controls and Indication Primary APU controls and indications are installed in the cockpit, mainly in the overhead panel, center pedestal panel and forward center panel. Additionally, two external emergency shutoff controls are installed on the Nose Landing Gear panel and on the Refuel/Defuel ...
If the unaugmented flying qualities of an aircraft are sufficiently poor to constitute a risk to flight safety, however, the reliability of the SAS must be extremely high, e.g., approaching that of primary structure. Further, provisions must be made to assure the kind of controllability that...