[
[1] Bratuchin, J.P., 1958, “Design and construction of helicopters” (in Polish: „Projektowanie i konstrukcja śmigłowców”), Państwowe Wydawnictwa Techniczne, Warsaw.
]Search in Google Scholar
[
[2] Stanisławski, J., 2018, “Performance requirements and simulation of rotor operation for high-mountain rescue helicopter”, Journal of KONES Powertrain and Transport, Vol. 25, No. 2.
]Search in Google Scholar
[
[3] Aubry J.A., 1982, “Rotary-wing aircraft rotor having a compact articulated hub”, US Patent 4361415.
]Search in Google Scholar
[
[4] Ferris, D.L., Rybicki, R.C., 1976, “Two-position helicopter main rotor”, US Patent 397249.
]Search in Google Scholar
[
[5] “Skeldar V-150”, https://pl.wikipedia.org/wiki/Skeldar_V-150, access: 17.10.2018.
]Search in Google Scholar
[
[6] Devine, V., 2016, “Cypher ® Unmanned Aerial Vehicle (UAV)”, https://www.sikorskyarchives.com/CYPHER.php, access: 17.10.2018.
]Search in Google Scholar
[
[7] “Sikorsky Cypher”, https://pl.wikipedia.org/wiki/Sikorsky_Cypher, access: 17.10.2018.
]Search in Google Scholar
[
[8] Sabak, J., 2016, “Eurosatory 2016: Drone to suppress riots?”, (in Polish: „Eurosatory 2016: Dron do tłumienia zamieszek?”), http://www.defence24.pl/390650,eurosatory-2016-dron-do-tlumienia-zamieszek, access: 17.10.2018.
]Search in Google Scholar
[
[9] “Aero Surveillance développe un drone destiné à la surveillance maritime”, 2015, http://www.lemarin.fr/secteurs-activites/defense/22553-aero-surveillance-developpe-un-drone-destine-la-surveillance, access: 17.10.2018.
]Search in Google Scholar
[
[10] “EADS Sharc”, https://pl.wikipedia.org/wiki/EADS_Sharc, access: 17.10.2018.
]Search in Google Scholar
[
[11] “HELICOPTER UAV / AERIAL PHOTOGRAPHY / INSPECTION / MAPPING”, http://www.directindustry.com/prod/swissdrones/product-181673-1790016.html, access: 17.10.2018.
]Search in Google Scholar
[
[12] “SDO 50 V2”, 2018, http://www.swissdrones.com/sdo-50/, access: 17.10.2018.
]Search in Google Scholar
[
[13] Mortimer, G., “KOAX X-240 MK II – Ready For Vertical Take-off”, 2010, , https://www.suasnews.com/2010/09/koax-x-240-mk-ii-%E2%80%93-ready-for-vertical-take-of/, access: 17.10.2018.
]Search in Google Scholar
[
[14] “V-200 SKELDAR UNMANNED, VERSATILE & MISSION READY”, https://umsskeldar.aero/our-products/rpas-systems/v-200-skeldar/, access: 17.10.2018.
]Search in Google Scholar
[
[15] “Camcopter S-100 unmanned air system”, https://schiebel.net/products/camcopter-s-100/, access: 17.10.2018.
]Search in Google Scholar
[
[16] “EHANG 184”, http://www.ehang.com/ehang184/, access: 17.10.2018.
]Search in Google Scholar
[
[17] “Sunward UAV”, 2018, https://en.wikipedia.org/wiki/Sunward_UAV, access: 17.10.2018.
]Search in Google Scholar
[
[18] “Ka-137”, 2016, https://pl.wikipedia.org/wiki/Ka-137, access: 17.10.2018.
]Search in Google Scholar
[
[19] Carey, B., 2014, “Beijing ZHZ Displays TD220 Unmanned Helicopter”, https://www.ainonline.com/aviation-news/2014-02-12/beijing-zhz-displays-td220-unmanned-helicopter, access: 17.10.2018.
]Search in Google Scholar
[
[20] Brzoska, Z., 1974, “Strength of materials” (in Polish: „Wytrzymałość materiałów”), PWN, Warsaw.
]Search in Google Scholar
[
[21] Żurawski, R., Ulma, D., 2018, „Investigation of ‘jump take-off’ possibility for the new concept of modern autogyro”, 31st Congress of the International Council of the Aeronautical Sciences
]Search in Google Scholar
