Multi-Fidelity Simulation of Cargo Airdrop: From the Payload Bay to the Ground

Jann, Thomas; Geisbauer, Sven; Bier, Niko; Krüger, Wolf R.; Schmidt, Hauke

doi:10.2514/6.2015-2654

Cited by 9 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On one hand, the appropriate traction force ensures that the cargo is dragged out of the cabin successfully. On the other hand, the tremendous pulling force, particularly at the moment of opening the parachute, cannot influence the safety of flight [19,20]. Table 3: The parameters of the standard tension meter and the voltmeter used in the test.…”

Section: Traction Test For Heavy-equipment Airdrop Extraction Parachutementioning

confidence: 99%

Research and Application of Heavy-Equipment Parachute Rope Tension Sensor

et al. 2018

View full text Add to dashboard Cite

Heavy-equipment airdrops are mainly used to deliver relief supplies and heavy weapons. Given the heavy weight of the goods, the tension of the extraction and brake ropes of the parachute significantly affects the safety of the aircraft. On the basis of the measurement and installation characteristics of the parachute rope, this study designed the structure of a nondestructive pressure-type parachute rope tension sensor and set the location of the strain gauge patch using the ANSYS simulation software to obtain a high sensor sensitivity. The temperature error of the tension sensor is compensated, and the precision is improved using the LSSVM-PSO (Least Squares Support Vector Machine-Particle Swarm Optimization) algorithm. The developed tension sensor is applied to the extraction parachute test system to measure the traction of 2 and 8 m2 parachutes. Test results show that the maximum weight of the platform these two parachutes can draw and the effect of parachute opening can be calculated.

show abstract

Section: Traction Test For Heavy-equipment Airdrop Extraction Parachutementioning

confidence: 99%

Research and Application of Heavy-Equipment Parachute Rope Tension Sensor

et al. 2018

View full text Add to dashboard Cite

show abstract

“…However, the aircraft motion is predefined by a pitch rate profile and does not response to the contact loads. More recently, Jann et al [15,16] reported the PARALAB (parachute and airdrop evaluation laboratory) simulation framework developed in a MATLAB/Simulink environment by the German Aerospace Center (DLR), which has similar capabilities as DSS; besides, it also has real-time capabilities that allow the implementation and evaluation of airdrop scenarios in a cockpit simulator. The contact model of PARALAB also adopts the symmetric assumption and the two-contact-point scheme as in DSS, but a more sophisticated nonlinear springdamper model is used for the calculation of contact forces.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Contact Model for the Simulation of Cargo Airdrop Extraction Phase

Ning

Chen

Tong

2018

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

A high-fidelity cargo airdrop simulation requires the accurate modeling of the contact dynamics between an aircraft and its cargo. This paper presents a general and efficient contact-friction model for the simulation of aircraft-cargo coupling dynamics during an airdrop extraction phase. The proposed approach has the same essence as the finite element node-to-segment contact formulation, which leads to a flexible, straightforward, and efficient code implementation. The formulation is developed under an arbitrary moving frame with both aircraft and cargo treated as general six degrees-of-freedom rigid bodies, thus eliminating the restrictions of lateral symmetric assumptions in most existing methods. Moreover, the aircraft-cargo coupling algorithm is discussed in detail, and some practical implementation details are presented. The accuracy and capability of the present method are demonstrated through four numerical examples with increasing complexity and fidelity.

show abstract

Unmanned Aircraft for Transportation in Low-Level Altitudes: A Systems Perspective on Design and Operation

Dauer

2021

Automated Low-Altitude Air Delivery

View full text Add to dashboard Cite

Multi-Fidelity Simulation of Cargo Airdrop: From the Payload Bay to the Ground

Cited by 9 publications

References 10 publications

Research and Application of Heavy-Equipment Parachute Rope Tension Sensor

Research and Application of Heavy-Equipment Parachute Rope Tension Sensor

An Efficient Contact Model for the Simulation of Cargo Airdrop Extraction Phase

Unmanned Aircraft for Transportation in Low-Level Altitudes: A Systems Perspective on Design and Operation

Contact Info

Product

Resources

About