EVALUATION OF THE INTEGRATED CONTACT-INSTRUMENT CONCEPT FOR ARMY FIXED WING FLIGHT INSTRUCTION

1969 ◽  
Author(s):  
Wallace W. Prophet ◽  
Oran B. Jolley
Keyword(s):  
Flight Instruction ◽  
Contact Instrument

Modeling the systematic behavior at the micro and nano length scales

2022 ◽  
Author(s):  
Danilo Quagliotti
Keyword(s):  
Case Studies ◽  
Influence Factors ◽  
Repeated Measurements ◽  
Length Scales ◽  
Frequentist Statistics ◽  
Systematic Behavior ◽  
Contact Instrument ◽  
Model Equations ◽  
Definition Of ◽  
Iso 25178

Abstract The assessment of the systematic behavior based on frequentist statistics was analyzed in the context of micro/nano metrology. The proposed method is in agreement with the well-known GUM recommendations. The investigation assessed three different case studies with definition of model equations and establishment of the traceability. The systematic behavior was modeled in Sq roughness parameters and step height measurements obtained from different types of optical microscopes, and in comparison with a calibrated contact instrument. The sequence of case studies demonstrated the applicability of the method to micrographs when their elements are averaged. Moreover, a number of influence factors, which are typical causes of inaccuracy at the micro and nano length scales, were analyzed in relation to the correction of the systematic behavior, viz. the amount of repeated measurements, the time sequence of the acquired micrographs and the instrument-operator chain. The possibility of applying the method individually to the elements of the micrographs was instead proven not convenient and too onerous for the industry. Eventually, the method was also examined against the framework of the metrological characteristics defined in ISO 25178-600 with hints on possible future developments.

Development of Hydrophobic Microporous Isotactic Polypropylene Membrane for Membrane Contactor Application

2015 ◽  
Vol 1113 ◽  
pp. 36-42
Author(s):  
Wan Jusoh Wan Zulaisa Amira ◽  
Abdul Rahman Sunarti
Keyword(s):  
Isotactic Polypropylene ◽  
Test System ◽  
Membrane Contactor ◽  
Thermally Induced Phase Separation ◽  
Hydrophobic Membrane ◽  
Operating Period ◽  
Thermally Induced ◽  
Polypropylene Membrane ◽  
Membrane Fabrication ◽  
Contact Instrument

Membrane Contactor (MC) is a well-known membrane technology to provide significant advantages required by industries. For MC, a hydrophobic membrane required as a barrier so that liquid absorbent and flue gaseous do not disperse with one another. However, the major concern in hydrophobic membrane is getting swelling by liquid after a short operating period. To minimize the swelling, this study focused on the exploration on membrane fabrication by Thermally Induced Phase Separation (TIPS). As the immersion in solvents is one of the important step to extract the diluent from membranes pores, the effect of the immersion in methanol was studied. The productions of hydrophobic microporous flat sheets were accomplished by using isotactic Polypropylene (iPP) and two type diluents: Dipenyl Ether (DPE) and Methyl Salicylate (MS). The measurement of hydophobicity of membranes produced was conducted by Test System of JY-82 Video Contact Instrument. Membranes produced were characterized by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). The highest hydrophobicity obtained were 124°(three hours immersed in methanol) and 107° (two hours immersed in methanol) by DPE and MS respectively. All membranes show spherical pores, indicating that membranes were formed via liquid-liquid TIPS and strong bond alkane group by Infrared (IR) spectras show that the membranes produce did not change when undergo TIPS process.

Effects of Individual Differences in Propensity for Feedback in the Training of AB Initio Pilots

1998 ◽  
Vol 42 (11) ◽  
pp. 784-786
Author(s):  
Jefferson M. Koonce
Keyword(s):  
Student Performance ◽  
Self Esteem ◽  
Flight Training ◽  
Demographic Information ◽  
Adaptive Feedback ◽  
Training Performance ◽  
Flight Instruction ◽  
Criterion Referenced ◽  
And Training ◽  
Significant Factors

One hundred and fifty persons answered a questionnaire measuring self-esteem, propensity for feedback, self-efficacy, and certain demographic information. Subsequently, the students completed the Basic Flight Instruction Tutoring System (BFITS), a series of fully-automated criterion-referenced lessons designed to teach a person how to fly an airplane. BFITS provided feedback whenever student performance on monitored variables approached the limits of acceptable performance. After BFITS the students entered the traditional flight training program. Flight time prior to the first solo flight, landings before first solo, and total time to the private pilot certificate were obtained. Individual needs for feedback were significant factors of performance in the BFITS training and its transfer to the aircraft. Because of the interaction between individual propensity for feedback and training performance an individually adaptive feedback methodology is proposed.

An Non-contact Instrument for Measuring Motions in Thick Tissues

1998 ◽  
Author(s):  
Cecil Cheung ◽  
Anatoly Chaussky ◽  
A. G. Yodh ◽  
D. A. Boas
Keyword(s):  
Contact Instrument

An Evaluation of Ground-Based Flight Trainers in Routine Primary Flight Training

1971 ◽  
Vol 13 (2) ◽  
pp. 109-116 ◽  
Author(s):  
H. Kingsley Povenmire ◽  
Stanley N. Roscoe
Keyword(s):  
Significant Positive Correlation ◽  
Group Performance ◽  
Flight Time ◽  
Flight Training ◽  
Pilot Training ◽  
Flight Instruction ◽  
Instructional Situation ◽  
Relative Value ◽  
Flight Instructors ◽  
Different Types

The relative benefits of different types of flight training equipment were evaluated in a routine instructional situation with no particular constraints placed upon the instructor as to how he used the equipment and without interfering with the normal course of flight training. The specific objectives of this research program were: (1) to evaluate the flight instructors' ability to predict success in private pilot training on the basis of students' initial performances in each of two ground trainers as opposed to actual aircraft, (2) to determine the relative value of 11 hours of flight instruction in two different ground trainers, and (3) to develop an objective scale for checking flight proficiency. There was a significant positive correlation of 0.50 between predictions based on two hours of training in the ground-based trainers and actual hours required to pass the flight check, but a nonsignificant negative correlation of 0.22 for predictions based on two hours in the aircraft. The ground trainer groups passed their flight checks with an average of slightly more than an how greater total time than those trained exclusively in the aircraft. On the basis of equivalent levels of group performance, 11 hours of training in the AN-T-18 resulted in a saving of 9 hours of flight time, thereby yielding a transfer effectiveness ratio of 0.8. Eleven hours of training in the GAT-1 resulted in a saving of 11 hours of flight time, yielding a transfer effectiveness ratio value of 1.0. The transfer effectiveness ratio is a new measure that directly relates the saving in learning one task to the amount of training on another.

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