Aerospace & Defense - 2016
The turbo - propeller differs that its blades are mounted on a turbo - platform.
This turbo - platform has two operating modes. In both modes it supplies the bottom blades with more dense air.
It already is advantage.
In the first mode capacity of the top forcing propeller is more than capacity of a turbo - expander and lateral blades. In that case the temperature of air is directly transformed in capacity of rotation - on known effect of a turbo - expander.
In the second mode on the contrary - capacity of a propeller of the turbine ...
Are you designing a small commercial unmanned airborne system (UAS)? Perhaps you have found a few suppliers for autopilots, but you have definitely faced the problem of finding the right supporting electronic modules, such as onboard power systems, motor drivers and servo controllers.
The requirements in reliability and efficiency for commercial UAS are getting close to the ones of general aviation. However, the market only offers either hobby-grade modules or military grade equipment. The hobby remote-control modules are typically designed to minimise the price, while efficiency and reliability are not the members of the equation. In opposite, the ...
Unusual State Alarm and Recovery Director
inexpensive stall warning device based upon known aerodynamic performance of airplane, balancing G-forces against force proportional to dynamic pressure. The basis for this idea evolved early (US 1,885,578 and 504,062).
Such an instrument may be an airtight case having upper and lower halves, with a thin circular diaphragm separating them and suspending a mass element Wm. The pitot tube supplies static plus dynamic pressure (Ps+Pd) below the diaphragm while static pressure Ps is on top. Net dynamic pressure Pd acts upward on the effective diaphragm area Am creating the dynamic force = Pd*Am to ...
The present invention relates to a vehicle seat that acts with a pendulum motion to reduce the likelihood of a passenger impacting the seat/structure in front of her during crash loadings.
In various modes of transportation, many passenger seats are at least partially surrounded by walls or monuments or may be placed behind other passenger seats. During a minor crash landing, a passenger may be thrown forward so that the passenger's head and/or body strikes these structures due to inertial loads. Regulators specify crashworthiness performance criteria to prevent head injury (HI) to the passenger in a seat. ...
Problem to be solved
We will rapidly approach a point where the terrestrial traffic simply stands still, and that will limit our personal movement. So the vertical flight made by Vertical Takeoff and Landing – VTOL aircarft becomes a logic and immediate solution. On the other hand, the single actual means for vertical flight is represented by helicopter. This expensive aerial vehicle is very risky to be used in urban environment because its exposed external rotors for which any contact with other external object leads to a disaster.
As opposed to the mechanically complicated cyclic swash-plate ...
www.vincs.it/VincSCalc key Features:
- One of the few calculators with resizable window (up to full screen) in order to allow a wide input/output field for huge numbers (horizontal) and deeply nested calculation (vertical).
- Nesting of calculation kept shown in calculation area that may become vertically scrollable for deeply nested calculation.
- Input/Output operand fields horizontally scrollable to allow arbitrary hugeness of integers (as huge as your hardware will allow)
- Numeric Keyboard disabled automatically when data is consistent to avoid involuntary overwrite (only operators or "clears" buttons ...
The M249 SAW and most other light machine guns (LMG) currently fielded by military’s around the world are outdated. Originally manufactured in the early '80's, their limitations such as painstakingly slow reload times, unreliable feeding mechanisms, lack of modularity, and cumbersome design make them inadequate for today's face paced and fluid battlefields. Despite these drawbacks, the LMG is the keystone of the modern US military fire team. What has kept the SAW and other LMGs fielded this long are their unmatched ability to provide sustained fire compared to other conventional firearms, such as the M16. LMGs achieve this by ...