The lens boosts the gas-jet efficiency by a factor of 4 10.
For different soil shear strengths, the effects of bit stick-out on the jetting efficiency and bearing capacity are different.
An optimal drill bit stick-out is then determined that provides the highest jetting efficiency under a given drilling fluid discharge rate.
In soil strata with low shear strength, the bit stick-out from the running assembly has little influence on the jetting efficiency, but a significant influence on the bearing capacity of the conductor, and hydraulic factors dominate the jetting efficiency and conductor stability.
This number is already a 40 percent improvement over jet fuel efficiency in 2000.
Pentagon officials described the document as a one-page spreadsheet with 10 lines of preliminary data about how the service scored the Boeing jet's efficiency in sample refueling missions.
Jet engine efficiency has come on in leaps and bounds, but the fuels they use are still polluting hydrocarbons which come out of the ground.
We have proposed synthetic jet actuator efficiency definition as a ratio of flow kinetic power based on momentum velocity to electrical power feeding generator.
Given our 5 miles per gallon of jet fuel efficiency calculated above, that means Santa needs around 45 million gallons of jet fuel for his annual voyage.
From power tools to invisible braces; from improvements in jet engine efficiencies to enhanced eye surgery techniques, NASA has been there, and -- with our continued support -- will remain.
Supercritical carbon dioxide (CO2) jet-assisted radial drilling is regarded as a potential alternative drilling method because supercritical CO2 jet has higher efficiency in rock-erosion efficiency than water jet.
