A novel approach to heavy-lifting of towed payload using multiplefixed-wing UAVs
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Notice bibliographique
Résumé
Vertical Takeoff and Landing (VTOL) aircraft are one of the only viable solutions for air-transporting substantial payloads without complex kilometer-long runway infrastructures, often unavailable in remote locations.These aircraft possess unique capabilities, including vertical takeoff and landing, which make them widely used for cargo delivery, construction, and emergency response operations.Although conventional rotorcraft can perform unique missions, their limited cruise speed and operating range make them challenging and costly to deploy.This is particularly significant for remote communities such as those in northern Canada, which rely on seasonal infrastructures like ice roads and limited runways for supply chains.As a result, such communities are highly dependent on aircraft that can overcome the costs and deployment times associated with such operations.Recently, significant effort has been put towards enhancing conventional rotorcraft capabilities, leading to the development of advanced aircraft such as compound helicopters and tilt-rotor aircraft.These aircraft's attempt to combine fixed-wing cruise performance with VTOL capabilities has resulted in increased cruise speed but limited hovering efficiency.To overcome that limitation, a disruptive concept that has been explored since the 1930s is the use of tethered fixed-wing aircraft.By following a near-circular flight path, one or more aircraft can lift a towed payload, then adjust their flight paths for lateral displacement of the payload.This concept brings together the capabilities to deploy quickly and at long-range the aircraft, while being able to conduct efficient vertical flight operation once on-site, making it an attractive alternative to conventional rotorcraft.While previous studies, mostly conceptual, used manned aircraft requiring kilometer-long tethers and prove too challenging for pilots, recent studies carried out by the Createk Innovation Lab with unmanned aerial vehicles (UAVs) have shown great potential.These studies showed that results from experiments conducted under controlled conditions indoor matched simulations.The Giant Rotor System (GRS) demonstrator was developed to explore the control of such a system.The GRS is the first system to successfully demonstrate, under real outdoor flight conditions, the lifting of a 20 kg payload with two off-the-shelf 3.2 kg UAVs, using a total of 2.1 kW.The system demonstrated hover flight and slow vertical lifting.The non-optimized system showcased a lifting efficiency 4 times better than that of conventional rotorcraft and heavy-lift VTOL systems, which can be attributed to the direct relationship between efficiency and aircraft aerodynamics, as opposed to rotor power on conventional rotorcraft.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle