Katapult za dronove

undergraduate thesis

• Title (english): Catapult drone launcher
• Author: Ivan Banožić
• Mentor: Matija Hoić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2025-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Tema ovog završnog rada je konstrukcijska razrada katapulta za dronove. Potrebno je
konstruirati katapult za lansiranje dronova koji uobičajeno polijeću s piste te katapult treba biti
primjeren za ugradnju na motorno vozilo ili prikolicu motornog vozila. Zadani su projektni
parametri: najveća masa pri polijetanju (Q = 250 kg), brzina u trenutku napuštanja katapulta (v
= 20 m/s) i najveće dopušteno ubrzanje pri polijetanju (a = 10 m/s2).
U uvodnom dijelu rada navedeno je osnovno o dronovima, vrste dronova i primjeri dronova,
zatim su navedena i objašnjena postojeća konstrukcijska rješenja. Nadalje su skicirana i
objašnjena tri koncepta koja su uspoređena prema zadanim kriterijima i odabran je koncept koji
je detaljnije razvijen. Odabrani koncept je koncept kojemu za lansiranje služi vlačna opruga.
U drugom dijelu rada napravljen je kompletan proračun za katapult i na kraju je izrađen 3D
model katapulta i pripadajuća tehnička dokumentacija.

Abstract (english)

The topic of this final thesis is the structural design of a drone catapult. The task is to design a
catapult for launching drones that typically take off from a runway. The catapult should be
suitable for installation on a motor vehicle or a trailer. The given project parameters include the
maximum takeoff weight (Q = 250 kg), the velocity at the moment of leaving the catapult (v =
20 m/s), and the maximum allowable acceleration during takeoff (a = 10 m/s²).
The introductory part of the thesis provides fundamental information about drones, types of
drones, and examples of drones. It also presents and explains existing structural solutions.
Furthermore, three concepts are sketched and explained, compared based on predefined criteria,
and a selected concept is developed in more detail. The chosen concept utilizes a tension spring
for launching.
The second part of the thesis includes a complete calculation for the catapult, and finally, a 3D
model of the catapult and the corresponding technical documentation are created.

• Keywords: katapult; opruga; bubanj; sajla; elektromotor; okidač
• Keywords (english): catapult; spring; drum; cable; electric motor; trigger
• Language: croatian
• URN:NBN: urn:nbn:hr:235:358694
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-02-21 12:49:42