Category: Aerospace
In recent years, the government has made moves to support making the results of taxpayer-funded research available to taxpayers for free. A new bill in Congress attempts to pull the plug.
The problem of conflicts of interest in science is not going to go away.
What's in the Stimulus Package for science?
NASA has released the Spacecraft Crew Survival Integrated Investigation Team report, which includes 30 recommendations to improve spacecraft design and crew safety.
Have you ever felt as if your brain was so full of information that you couldn't process another thing? Mental overload creates confusion and frustration, and for airline pilots, the consequences can be disastrous.
Palin takes on basic science research as an example of government waste.
Join the Science Blog crew this Friday, October 24 at noon in Los Angeles to discuss Obama, McCain and the sciences, courtesy of Farmlab.
Is it impossible to pin down both where and when an event takes place, due to quantum gravity effects?
Shahn Majid explains why this may be.
In my recent posts I have emphasized ideas on the cutting edge of fundamental science which have testable predictions or other contact with experiment, rather than being merely fashionable. Now, up until recently it was widely assumed that ideas for the ‘Mount Everest’ challenge of quantum gravity, as Martin Rees puts it in his review of the multi-authored book On Space and Time, could never be tested experimentally.
Russia, Europe and the United States are getting ready for sending their spaceships to Jupiter in next 10-12 years.
Stanford computer scientists have developed an artificial intelligence system that enables robotic helicopters to teach themselves to fly difficult stunts by watching other helicopters perform the same maneuvers. The result is an autonomous helicopter than can perform a complete airshow of complex tricks on its own.
A new interactive Calculator for the calculation of composite stiffness has been developed. Simply input your micro-mechanical properties of the composite on the web page and the axial, A, coupling, B, and bending, D, matrices are calculated. This website provides a quick reference for Composite designers.
www.compositecalculator.com
United States consider Russian rocket engine RD-180 to be the best rocket engine on the world, claim RosCosmos officials.
RD-180 is a two-chamber variant of four-chamber kerosene engine RD-170. The engine owes better specific characteristics, than American analogues have, to closed circuit with reburning of exhaust generator gas in main combustion chambers.
The crew of the International space station finishes preparations for “Vsplesk” (“Burst”) experiment, results of which are expected to help in developing methods for real-time forecasting of earthquakes.
Finding the effective rigidities of an advanced composite wing can simplify the analysis considerably. The application of fibre-reinforced composite materials in the aerospace industry extends from commercial to military aircraft, such as the Boeing F18, B2 Stealth Bomber, AV-8B Harrier (Jones, 1998 and http://www.compositecalculator.com). The attractiveness of composites lies in their mechanical properties; such as weight, strength, stiffness, corrosion resistance, fatigue life. Composites are widely used for control surfaces such as ailerons, flaps, stabilizers, rudders, as well as rotary and fixed wings. That is why the analysis of composite structures is imperative for aerospace industry. The main advantage of composites is their flexibility in design. Mechanical properties of the laminate can be altered simply by changing the stacking sequence, fibre lay-up and thickness of each ply which leads to optimization in a design process.
To prevent catastrophic oscillatory failures in aircraft wings, a vibration analysis is imperative. A specific Circumferentially Asymmetric Stiffness Configuration is implemented and fully described in http://www.aeroway.ca/Taperedwing.htm
A new Dynamic Finite Element (DFE) formulation is developed to calculate the natural frequencies and modes of wings composed of advanced super light composite materials. This enhanced method provides highly accurate solutions compared to classical Finite Elements.
