engine and airframe manufacturers for decades have cited the direct relationship between engine wear and high exhaust gas temperature (EGT) in recommending that operators use less than maximum takeoff thrust whenever possible. While the cost benefits of reduced-thrust takeoffs are thoroughly documented, the safety benefits are not as well understood. Thus, there is a common perception that usin...

A literature review, a datasheet review, and in-house experimental data were used to obtain a real-world comparison between bio-mimetic pectoral fins and traditional propeller-based thrusters. Only power consumption, forward thrust, and propulsive efficiency are compared. Scaling trends for both propulsion forms are discussed. Traditional thrusters are determined to be more efficient than curre...

statement of the problem : geographic tongue is characterized by loss of filliform papillae in an erythematous area with keratotic borders. it vanishes after a while and reappears in another area. it is relatively common and is most seen among females. considering such problems as pain, burning sensation and sharp pain in tongue, decreasing of taste sensation, cancer phobia and esthetic problem...

Liquids are complex consonants that employ multiple gestures of the tongue in order to achieve specific tongue shapes. In the case of the lateral liquid /l/, that specific shape involves lowering and curling of the tongue along the blade. Many models of speech treat /l/ simply as a combination of tongue tip closure and tongue body retraction gestures, with tongue shaping receiving little attent...

In Sepioteuthis lessoniana, the oval squid, ontogenetic changes in the kinematics of the mantle during escape-jet locomotion imply a decline in the relative mass flux of the escape jet and may affect the peak weight-specific thrust of the escape jet. To examine the relationship between ontogenetic changes in the kinematics of the mantle and the thrust generated during the escape jet, we simulta...

The combination of detailed topographic leveling on the southwest segment of the El Asnam thrust fault with existing seismic and geologic data implies that the geometry of this fault involves shallow dipping flats and steep ramps. The fault appears to be growing along strike toward the southwest end, where the main shock initiated in 1980. From a depth of about 10 km, the main thrust appears to...

It is well known that each thruster on the SPHERE produces slightly different thrust and behaves differently (see [Chen] and [Berkovitz]). Some methods were developed by [Chen] to compensate for the difference in thrust between thrusters and improve the open-loop performance of the SPHERE, but they were yet to be demonstrated. An experiment was performed onboard NASA’s KC-135, during microgravi...

In this paper, the impacts of the uncertainty of fuel heating value as well as the burner efficiency on performance functions of a turbofan engine are studied. The mean value and variance curves for thrust, thrust specific fuel consumption as well as propulsive, thermal and overall efficiencies are drawn and analyzed, considering the aforementioned uncertainties based on various Mach numbers at...

Tongue inspection is a unique and important method of diagnosis in traditional Chinese medicine (TCM). It is a diagnostic approach which involves observing the changes in the tongue proper and tongue coating in order to understand the physiological functions and pathological changes of the body. However, the biological basis of TCM tongue diagnosis remains to be poorly understood and lacks syst...