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2021
Aerospace & Defense

Low-cost Propulsion Method for Target Drones and Related Equipment

From WW II and later, also from its use as rotor tip power in some helicopters, we know Ramjets could have a use in certain applications where fuel economy is not first requirement. German data seized by the UK indicate Lorin Ramjet best arrangement is 10º divergency in the intake/ diffuser section, for a total length of 1559 cm,

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Jose Gros Aymerich
Madrid, Spain
Votes: 0
Views: 1515
Aerospace & Defense
Jul 1, 2021

Lunar Cargos: Oplonas & Macedonas

Two concepts invented for delivering cargo to the lunar surface: OPLONAS (Oversized Payload Lander On Non-Atmospheric Somata) and MACEDONAS (Momentum Absorption Catcher for Express Delivery on Non-Atmospheric Somata). The second can derive from the first by scavenging the flexible elements of OPLONAS, the radial high tensile ropes and the perimetrical wires.

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Charalampos Kosmas
Ilioupolis, Greece
Votes: 35
Views: 4244
Aerospace & Defense
Jul 2, 2021

Manus: A Natural Hand Controller

Do you remember when you were young and wanted to fly an airplane? Do you remember flying with your hand? Twisting your wrist to climb and dive, bank and turn? It was so easy to feel yourself in a cockpit, zipping through the clouds. What if you could do that for real?

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Samuel Denard
Houston, United States
Votes: 0
Views: 2090
Aerospace & Defense
Jun 24, 2021

MAREO III: Jogging to Mars

Orbiter mid deck is circular. Its floor has a spheric section curve of very large radius, as if it were a piece of a giant sphere hundreds of feet in diameter. Its imaginary center of revolution is hundreds of feet above.

Deck revolves, rather than rotate as in earlier concepts for artificial gravity spacecraft.

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Leonard J Holmin
Point Pleasant Boro, United States
Votes: 1
Views: 1949
Aerospace & Defense
Jul 2, 2021

Matter Masses in Linear, Spiroidal Rotational Motion and Attraction, in Space Within Aether

My lengthy searching of Plato's works, resulting in the Discovered Invention of a New Polyhedron the “GENERATOR POLYHEDRON” [2017 –a Non-Regular Icosahedron, Relating the 5 Platonic Polyhedron] together with my own parallel considerations and questions for the actions and mechanisms of the Galactic Spirals,

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Panagiotis Stefanides
Kifissia, Greece
Votes: 2
Views: 3530
Aerospace & Defense
Jul 5, 2021

Miniature Turbine Jet Engine Design & Manufacturing

Turbine jet engine designing and manufacturing. I am into aviation industry designing, manufacturing and deployment of UAVs and related products. My customers include engineering students, universities, defense, police and hobby enthusiasts. I started in this field 5 years back with many, many customers. I have a large hobby / drone store in Hyderabad.

My recent project includes design,

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Khaled Bakhtiar
Hyderabad, India
Votes: 72
Views: 3625
Aerospace & Defense
Jun 30, 2021

Multistage Combustor

In order for a jet engine to become multistage it must have a multistage afterburner or a multistage combustor. In order for a combustor to become multistage it must actually operate through the combination of uninterrupted and pulsating combustion. Uninterrupted combustion in stage 1 and pulsating combustion in higher stages through pulsating fuel feed.

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Role Alvarez
Bacolod City, Philippines
Votes: 1
Views: 2056
Aerospace & Defense
Apr 12, 2021

New Era for UAVs

Use atmospheric water generator powering by solar cells;

Then use a small nuclear reactor to convert water to steam to power an electric generator;

Re-condense water vapor into water using heat exchangers;

Use the electricity to power two fan duct motosr to push it onwards.

Because high atmosphere clouds contain water,

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Mohamed Farid
Giza, Egypt
Votes: 1
Views: 1475
Aerospace & Defense
Mar 28, 2021

Next Generation Gas Turbine

This is a concept for a new type of gas turbine engine that was designed for turbo electric power generation for hybrid aircraft, ie commercial airliners. The main idea was to reduce the cost, complexity and maintenance requirements of traditional gas turbine engine while drastically improving fuel efficiency and emissions reduction.

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Vatche Najarian
Littleton, United States
Votes: 1
Views: 1956
Aerospace & Defense
Apr 24, 2021

Numerical Analysis of Semi-tangential Ogive Bullet

The objective of this research is to design and analyze a semi-tangential ogive bullet using computer-aided design & Computational Fluid Dynamics. There has been a quite steady increase in the research of bullet design in the past few decades. The design of the nose is the most important part of the design of a ballistic bullet.

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Avinash T
Chennai, India
Votes: 0
Views: 2248
Aerospace & Defense
Jun 16, 2021

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