Recovery System of the Multi-Helicopter Uav

Prisacariu, Vasile; Pop, Sebastian; Cîrciu, Ionică

doi:10.19062/1842-9238.2016.14.1.13

Cited by 15 publications

(5 citation statements)

References 2 publications

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“…In addition, the implementation of any technical system, in addition to its benefits, cannot be free of both technical and human risks, so UAV incidents will occur irrespective of the measures taken, requiring a number of regulations and technical solutions to limit the risks [10,11,12].…”

Section: Risks and Possible Threats In Using Uav'smentioning

confidence: 99%

Risk Management Regarding the Use of Uav in the Modern Air Space

Pop¹,

ISAILĂ²,

Preda³

et al. 2017

AFASES 2017

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Aviation is the domain with one of the greatest technical developments. Thus the emergence and development at the consumer level of commercial UAVs has put the entire aerospace industry and national security system in front of a fulfilled fact. These unmanned human onboard systems and the continuous development of hardware and software systems are currently creating one of the biggest challenges: integration in airspace. The article reviews the risks, threats and concepts of illegal use of the drones.

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Section: Risks and Possible Threats In Using Uav'smentioning

confidence: 99%

Risk Management Regarding the Use of Uav in the Modern Air Space

Pop¹,

ISAILĂ²,

Preda³

et al. 2017

AFASES 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, parachutes are also safer and smoother than others. However, strong wind is an environmental condition having effects on the parachute's inflation and descent and hence it is more difficulty for crews to recover drones when appearing in complex situations [2,5]. Primary components of the parachute recovery system can contain a parachute, a container for package and launching and a control system including a receiver, a transmitter and a central processor.…”

Section: Introductionmentioning

confidence: 99%

Experimental Characterization of Drag Coefficient of an UAV Recovery Parachute

2021

JST: SSAD

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Parachute recovery systems are proved to be an efficient method to recovery and rescue unmanned aerial vehicles (UAV) as it follows most requirements of reliability and airworthiness in flights. Parachutes are key components of the recovery systems and the drag coefficient of parachutes plays a crucial role in evaluating parachute’s performance. The purpose of the research is to determine and compare the impact of some factors on aerodynamic drag force during the inflation of a parachute. The canopy’s shape (flat circular type and extended skirt 10% flat type), of the length of suspension lines (be in proportion to nominal diameter from 0.6 to 1.5) are considered. Measurement of the drag force of the parachute models is carried out in an open return wind tunnel. Experimental results show that flat circular canopy has a higher drag coefficient than extended skirt 10% flat model in the range of low speed from 3 to 6 m/s. However, when wind speed is greater than 6 m/s, the drag coefficients of both two parachute types are nearly 0.85. In terms of the suspension line, the longer length would significantly raise the coefficient of drag force.

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“…Operational and exploration requirements for UAVs impose in particular cases the use of rescue and recovery systems. These systems could possess a large range of constructive solutions, such as recover parachutes [22], airbags [23], safety nets [24], and pneumatic cushions boats [25]. The rescue and recovery systems must allow a safe landing in case of emergencies and could become a solution to a standardization regarding landing in extreme weather and geographical conditions [25].…”

Section: Introductionmentioning

confidence: 99%

Design of Fully Automatic Drone Parachute System with Temperature Compensation Mechanism for Civilian and Military Applications

Almadani

Svirskis

Narvydas

et al. 2018

Journal of Advanced Transportation

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Application of Unmanned Aerial Vehicles (a.k.a. drones) is becoming more popular and their safety is becoming a serious concern. Due to high cost of top-end drones and requirements for secure landing, development of reliable drone recovery systems is a hot topic now. In this paper, we describe the development of a parachute system with fall detection based on accelerometer-gyroscope MPU – 6050 and fall detection algorithm based on the Kalman filter to reduce acceleration errors while drone is flying. We developed the compensation algorithm for temperature-related accelerometer errors. The parachute system tests were performed from a small height on a soft surface. Later, the system was tested under real-world conditions. The system functioned effectively, resulting in parachute activation times of less than 0.5s. We also discuss the civilian and military applications of the developed recovery system in harsh (high temperature) environment.

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Recovery System of the Multi-Helicopter Uav

Cited by 15 publications

References 2 publications

Risk Management Regarding the Use of Uav in the Modern Air Space

Risk Management Regarding the Use of Uav in the Modern Air Space

Experimental Characterization of Drag Coefficient of an UAV Recovery Parachute

Design of Fully Automatic Drone Parachute System with Temperature Compensation Mechanism for Civilian and Military Applications

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