Using Simulation to Optimize Ski Jump Ramp Profiles for STOVL Aircraft

Imhof, Greg; Schork, Bill

doi:10.21236/ada378145

Cited by 2 publications

(1 citation statement)

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“…Englebry [16] analyzed the impact load on the aircraft of low thrust-weight ratio during ski-jump take-off and described the work of designing and refitting the S-3A aircraft to adapt to the light aircraft carrier. Imhof et al [17] conducted a simulation analysis on the ski-jump take-off ramp of the aircraft. The research showed that the use of a ski-jump take-off ramp does not affect the take-off performance of the aircraft.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Carrier-Based Aircraft Catapult Launching Based on Variable Topology Dynamics

2021

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The catapult process of a carrier-based aircraft includes multiple links such as catapult tensioning, separation of the holding rod, dragging and running, separation of the catapult and drag shuttle, and free running. The connection relationships between the front landing gear of the carrier-based aircraft and other related components in each link are different, therefore, it is necessary to adjust the topological relationships of the dynamic model in real time, when solving the catapult dynamics of a carrier-based aircraft. In this paper, a dynamic model of the multibody system of the catapult take-off is established, and a variable topology solution is carried out for the dynamic model by adjusting dynamic augmentation equations; in addition, a dynamic analysis of a carrier-based aircraft catapult and take-off process is carried out. A catapult dynamics model and variable topology solution method were established, which solved the changes at the moment of the restraining rod separation, catapult rod separation, and catapult tackle during the aircraft catapult take-off. After the restraining rod was separated from the front landing gear, the catapult force was transmitted to the rear strut, which instantly increased the load of the rear strut by 238.5 kN. In addition, after the carrier-based aircraft reached the end of the catapult’s stroke, the catapult rod was separated from the catapult tow shuttle then unloaded, and the load of the rear strut was reduced from 486.2 kN to −20.3 kN. Under the protruding effect of the nose gear, the pitch angle of the carrier-based aircraft increased rapidly from −0.93° and reached 0.54° when the carrier-based aircraft rushed out of the deck.

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Section: Introductionmentioning

confidence: 99%

Analysis of Carrier-Based Aircraft Catapult Launching Based on Variable Topology Dynamics

2021

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Dynamics Analysis of Carrier-based UAVs with Ski-jump Launch

Liu

Guo

2020

J. Phys.: Conf. Ser.

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Sinking has a direct influence on launch safety of carrier-based UAVs, occurred just while leaving carrier board caused of disappearance of ground effect. A dynamics model of an UAV was developed and some mechanical and dynamics analysis were given out to build its dynamics simulation model of ski-jump launch. Based on the simulation results, some important parameters were analyzed, such as trace, velocity and loadings of landing gears. By changing the values of engine thrust and mass of the UAV, it was validated that decreasing the mass properly or increasing thrust would reduce the sinking and improve launch trace to make it safer.

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Using Simulation to Optimize Ski Jump Ramp Profiles for STOVL Aircraft

Cited by 2 publications

References 1 publication

Analysis of Carrier-Based Aircraft Catapult Launching Based on Variable Topology Dynamics

Analysis of Carrier-Based Aircraft Catapult Launching Based on Variable Topology Dynamics

Dynamics Analysis of Carrier-based UAVs with Ski-jump Launch

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