Application of Advanced Methods to Design Loads Determination for the L-1011 Transport
1973; American Institute of Aeronautics and Astronautics; Volume: 10; Issue: 8 Linguagem: Inglês
10.2514/3.60248
ISSN1533-3868
AutoresWarren A. Stauffer, John G. Lewolt, Frederic M. Hoblit,
Tópico(s)Rocket and propulsion systems research
ResumoAn over-all view is presented of the approaches used to obtain design loads for the Lockheed L-1011 TriStar transport. A coordinated effort involving many engineering disciplines was required. Loads were obtained as panel loads, using two and three dimensional grid systems. Aerodynamic force distributions were based on lifting surface theory and on pressure data obtained from wind tunnel model tests. Extensive use was made of matrix concepts and matrix algebra both in data handling and in solving the aeroelasticity equations to obtain panel load distributions. Scanning procedures were developed to weed out noncritical conditions. Loads and spectra for fatigue analysis and test were obtained by the same methods used to obtain limit load conditions. The methods of loads analysis were validated by means of various test programs, including extensive flight and ground loads measurements on an instrumented airplane.
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