Pneumatic propellant system model of an emergency parachute system for a vertical take-off and landing UAV

• Autorzy: Jastrzębski G. , Szczepaniak P. , Nowakowski M. , Ułanowicz L. , Jóźko M. , Włodarczyk J.

Identyfikatory

DOI

10.2478/jok-2018-0062

• Języki publikacji: EN

Abstrakty

EN

The subject of this publication is a mathematical model of a pneumatic supply system for an emergency parachute system. This system is intended for a vertical take-off and landing UAV. An overview of emergency parachute landing system designs is presented in the introduction. Based on a schematic diagram and a 3D computer model, the construction and operation principles of an emergency parachute system, currently being developed at AFIT, was presented. A mathematical model, which enables the determination of the energy of gas (compressed CO₂) stored in the accumulator tank was described. The conducted tests, which involved weighing the accumulator after filling with liquefied CO₂ from a special cartridge and equivalent mass ejections were discussed. These tests involved recording the track of the equivalent mass movement and time necessary to determine velocity. The results of calculations regarding the equivalent mass energy imitating an emergency parachute, CO₂ volume and mass in the accumulator in liquefied and gaseous state were presented. Based on the conducted calculations and the obtained characteristics, the developed mathematical model was assessed, and the final conclusions formulated.

Słowa kluczowe

EN

emergency parachute; pneumatic accumulator; pneumatic energy

• Wydawca: Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONBiN
• Rocznik: 2018
• Tom: No. 48
• Strony: 385--398
• Opis fizyczny: Bibliogr. 8 poz., rys., tab

Twórcy

autor

Jastrzębski G.

• Air Force Institute of Technology, Instytut Techniczny Wojsk Lotniczych

autor

Szczepaniak P.

• Air Force Institute of Technology, Instytut Techniczny Wojsk Lotniczych

autor

Nowakowski M.

• Air Force Institute of Technology, Instytut Techniczny Wojsk Lotniczych

autor

Ułanowicz L.

• Air Force Institute of Technology, Instytut Techniczny Wojsk Lotniczych

autor

Jóźko M.

• Air Force Institute of Technology, Instytut Techniczny Wojsk Lotniczych

autor

Włodarczyk J.

• Air Force Institute of Technology, Instytut Techniczny Wojsk Lotniczych

Bibliografia

• 1. Grymek S.: Modele strumienia powietrza w pneumatyce [Air stream models in pneumatics], Politechnika Gdańska, Gdańsk 2012
• 2. Jastrzębski G.: Description of the pneumatic work cycle of the starting unit of the UAV launcher, Journal of KONES, vol. 4, no. 24, 2017
• 3. Jastrzębski G.: Impact of opening time of the take-off pneumatic launcher main valve on take-off pressure losses, Journal of Kones, vol. 23, no. 4, 2016
• 4. Szenjach W.: Napędy i sterowania pneumatyczne [Pneumatical controls and propulsion systems], WNT, Ed. 3 1997
• 5. www.fruitychutes.com
• 6. www.galaxysky.cz
• 7. www.marsparachutes.com
• 8. www.taginn.com