Lenticular Craft Propulsion Types Overview (or a combination of which)
1950-1954; Project Magneturl: http://luforu.org/wilbert-b-smith/
The study by study program established by Transport Canada by electrical engineer Wilbert Smith to look at the possibility flying saucers may manipulate geomagnetics or earth's magnetic field.
1950 Paul Trent Photo and Rectenna (rectifying antenna) Flying SaucerClick on PDF link
Atmospheric trans-atmospheric vehicle using beamed energy propulsion, part airship, microwave receiver, plasma Z-pinch, and the smallest part jet or rocket engine.
1952 - Rene Couzinet, Couzinet RC-360 "Aerodyne"url: https://ufologie.patrickgross.org/aircraft/couzinet.htm
A vertical takeoff aircraft (VTOL) that used two contra-rotating discs powered by three engines. A second model was designed with six Lycoming engines (180 hp each) and one Marcel Dassault Viper turbojet.
1954 Avro Project Silverbug; 1959 AvrocarClick on PDF link
March 1956 - How The Flying Saucer Works by Willy Leyurl: http://blog.modernmechanix.com/how-the-flying-saucer-works/
"AVRO Ltd. of Canada had a USAF contract, Coanda effect, a new principle in aerodynamics, had made the disc-like aircraft possible."
1960s - Lenticular Reentry Vehicle (LRV)Click on PDF link
A manned flying saucer launched from a conventional rocket that would send six weeks in orbit and re-enter earth's atmosphere gliding down to land
1967-1980s - Moller M200G Volantorurl: https://en.wikipedia.org/wiki/Moller_M200G_Volantor
Personal VTOL, ground effect saucer shaped flying vehicle concept by aeronautics engineer Paul Moller. The M200G Volantor uses a system of eight computer-controlled fans to hover up to 10 feet (3 m) above the ground.
1974 - Skyship Flying Saucer, Lenticular Airships, Buoyant Flying Saucersurl: https://drive.google.com/file/d/1Ef5sQCFA0wjoy3RhdXpnAwEvKNGC05wC/view?usp=sharing
The design concept which the Company had come up with centered on a lenticular (saucer) shaped craft with a centrally mounted ducted fan and helium gas bags
1974-1980s - Lightcrafturl: https://en.wikipedia.org/wiki/Lightcraft
Beam-powered propulsion using, rectenna, plasma pinch conceptualized by aerospace engineering Leik Myrabo at Rensselaer Polytechnic Institute in 1976. Small working prototypes were tested in the 1980s.
Modern Times - Various Lenticular AirshipsClick on PDF Link
Solar Airship; ANYUTA PROJECT form DP-27; Multibody Advanced Airship for Transport (MAAT) project
2004 - NASA low-density supersonic decelerator (LDSD) Test VehicleClick on PDF Link
Is a disc-shaped reentry vehicle designed to test techniques for atmospheric entry on Mars.