LS-DYNA is widely used in aerospace applications and mechanical engineering. LS-DYNA was used to find out what caused the catastrophe with Columbia shuttle. This program was used to analyze processes of foam collision that peeled off from the take-off rocket and struck the front part of Columbia's wing [1]. Application of the program demonstrated a possibility of using it as a tool to forecast the behaviour of a material when it strucks and hits such elements as foam, ice, etc.

For a better understanding of the process of foam penetration into Columbia shuttle RCC wing panel, NASA and Boeing team studied the foam and wing RCC material when they interact [2]. The results obtained in LS-DYNA allowed to correlate them both with sub-component and full-scale tests.

LS-DYNA proved its worth in the course of studying the accident with Columbia shuttle, which can contribute to the continuation of shuttles use in the future.

LS-DYNA was used to study processes of helicopter crashing against a mountain [3]. A wide variety of materials that can protect aircraft were used for the test. Calculation of technological processes allowed to analyze the process of helicopter falling for the purposes of fuel tanks tightness preservation assessment. 

Another option for using LS-DYNA is also related to the process of structure collision with an obstacle. In this case the process of helicopter collision with the ground was studied [4]. Mathematical modeling was used to study the damper element located under the helicopter body, and its absorbing properties were considered for the purposes of reduction of the strength of impact of the helicopter body against the ground. The process parameters obtained after modeling in LS-DYNA were used to optimize the design of helicopters and dampers, which made it possible to reduce the strength of impact and destruction when hitting against the ground. 

Another option for using the program is LS-DYNA use for the design of a parachute. Earlier, when mathematical modeling instruments were not used, parachutes were designed based on previously obtained experimental data, which required considerable engineering knowledge. The use of LS-DYNA made it possible to greatly simplify the process of designing a parachute. The program allows showing the entire process of parachute deployment in dynamics. At any given time it is possible to get all required data on the speed, acceleration and any other necessary parameters. LS-DYNA was used to analyze the material of the parachute, the wind tunnel, parachute deployment stages and impact tests [5].

 

LS-DYNA was also used to study the process of destruction of buildings of the International Trade Centre and Pentagon on September 11, 2001 as a result of a collision with an airplane [6]. LS-DYNA was used to reconstruct the whole sequence of events in detail, as it happened. LS-DYNA was used to simulate processes of destruction of both aircraft elements and building concrete columns, fuel burning processes (modeling of Boeing 757) and their influence on the destruction. 

Another application of LS-DYNA is modeling of the capsule landing process. There are various options for landing of the capsule, which returned from the space. One of these options is capsule landing on water [7]. Use of this landing option allows to reduce the strength of impact on the body at the time of landing and is an alternative to landing on the ground. LS-DYNA was used to study the magnitude of acceleration (braking) when landing on water. Acceleration of the apparatus at various angles of impact with water. Such modeling allowed to choose the best variant of landing, which minimized the force acting on the capsule body. Various possibilities of LS-DYNA, in particular, Euler-Lagrange connection algorithm and multi-material ALE possibilities, were used for studying.

1. Test and analysis correlation of foam impact onto space shuttle wing leading edge RCC panel 8. Edwin L. Fasanella, Kare H. Lyle, Jonathan Gabrys. 8 th International LS-DYNA Users Conference .

2. A Summary of the Space Shuttle Columbia Tragedy and the Use of LS-DYNA in the Accident Investigation and Return to Flight Efforts. Matthew Melis and Kelly Carney, Jonathan Gabrys, Edwin L. Fasanella, Karen H. Lyle. 8th International LS-DYNA Users Conference.

3. Virtual reality visualization of realistic weapons effects predicted using ls-dyna. David W. Nicholson, Ricardo F. Moraes, Eduardo Divo, Brian Cahill.

4. LS-DYNA Analysis of a Full-Scale Helicopter Crash Test. Martin S. Annett Structural Dynamics Branch NASA Langley Research Center Hampton , VA 23681 . 11 International LS-DYNA Users Conference .

5. Development of Parachute Simulation Techniques in LS-DYNA. Benjamin Tutt, Richard Charles, Scott Roland, Greg Noetscher. 11 th International LS-DYNA Users Conference .

6. September 11 Pentagon Attack Simulations Using LS-Dyna. Phase I, September 11, 2002 . Mete A. Sozen, Sami A. Kilic and Christoph M. Hoffmann. www cs.purdue.edu/homes/cmh/simulation/

7. The Use of LS-DYNA to Simulate the Water Landing Characteristics of Space Vehicles. Benjamin A. Tutt, Anthony P. Taylor. 8th International LS-DYNA Users Conference.