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Crash Testing and Simulation of a Cessna 172 Aircraft: Hard Landing Onto Concrete.
| 题名： | Crash Testing and Simulation of a Cessna 172 Aircraft: Hard Landing Onto Concrete. |
| 作者： | Jackson, K. E.; Fasanella, E. L. |
| 关键词： | Cessna 172 aircraft, Landing gear, Concretes, Hard landing, Crash landing, Emergency locator transmitters, Finite element method, Inertia principle, Sequential analysis, Time series analysis, Impact tests, Technology assessment |
| 摘要： | A full-scale crash test of a Cessna 172 aircraft was conducted at the Landing and Impact Research Facility at NASA Langley Research Center during the summer of 2015. The purpose of the test was to evaluate the performance of Emergency Locator Transmitters (ELTs) that were mounted at various locations in the aircraft and to generate impact test data for model validation. A finite element model of the aircraft was developed for execution in LSDYNA to simulate the test. Measured impact conditions were 722.4-in/s forward velocity and 276-in/s vertical velocity with a 1.5deg pitch (nose up) attitude. These conditions were intended to represent a survivable hard landing. The impact surface was concrete. During the test, the nose gear tire impacted the concrete, followed closely by impact of the main gear tires. The main landing gear spread outward, as the nose gear stroked vertically. The only fuselage contact with the impact surface was a slight impact of the rearmost portion of the lower tail. Thus, capturing the behavior of the nose and main landing gear was essential to accurately predict the response. This paper describes the model development and presents test-analysis comparisons in three categories: inertial properties, time sequence of events, and acceleration and velocity time-histories. |
| 总页数： | Jackson, K. E.; Fasanella, E. L. |
| 报告类型： | 科技报告 |
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