Certification of lightning protection for a full-authority digital engine control

FADEC systems present many challenges to the lightning protection engineer. Verification of the protection-design adequacy for certification purposes presents additional challenges. The basic requirements of the certification plan of a FADEC is to demonstrate compliance with Federal Airworthiness Regulations (FAR) 25.1309 and 25.581. These FARs are intended for transport aircraft, but there are equivalent sections for general aviation aircraft, normal and transport rotorcraft. Military aircraft may have additional requirements. The criteria for demonstration of adequate lightning protection for a FADEC systems include the procedures outlined in FAA Advisory Circular (AC) 20-136, Protection of aircraft electrical/electronic systems against the indirect effects of lightning. As FADEC systems, including the interconnecting wiring, are generally not susceptible to direct attachment of lightning currents, the verification of protection against indirect effects is primarily described

Design of lightning protection for a full-authority digital engine control

The steps and procedures are described which are necessary to achieve a successful lightning-protection design for a state-of-the-art Full-Authority Digital Engine Control (FADEC) system. The engine and control systems used as examples are fictional, but the design and verification methods are real. Topics discussed include: applicable airworthiness regulation, selection of equipment transient design and control levels for the engine/airframe and intra-engine segments of the system, the use of cable shields, terminal-protection devices and filter circuits in hardware protection design, and software approaches to minimize upset potential. Shield terminations, grounding, and bonding are also discussed, as are the important elements of certification and test plans, and the role of tests and analyses. Also included are examples of multiple-stroke and multiple-burst testing. A review of design pitfalls and challenges, and status of applicable test standards such as RTCA DO-160, Section 22, are presented

Assets and Barriers to Osteoarthritis

Osteoarthritis has remained a prevailing health concern in our society for many years. OA is most commonly seen in middle aged men and women suffering from pain and stiffness in the hip, knee, and thumb areas. Risk factors for OA include age, obesity, previous joint injuries, overuse of joint areas, and weak muscles. If not treated, OA could lead to permanent discomfort and pain, and potentially develop into depression, lowered quality of life, or a need for long-term home health care. By providing photo footage of every day health care issues, Photo voice persuades community members to change habits and behaviors in an effort to lower the chance of certain health concerns. I have created a collection of photos taken in the local community representing habits and items that contribute to the development of osteoarthritis. My first picture entails a surgery scar to represent a joint and cartilage injury from a Murray resident. Previous injuries to bones and cartilage as well as overuse of joints lead to the development of OA. Secondly, I provided a photo of fast food restaurants in Murray. These places provide unhealthy fats, placing customers at risk for obesity, a key risk factor to OA. Lastly, I captured a photo of the gym, to represent fitness and physical activity. Both of these are prevention methods for OA. The Arthritis Foundation holds community events to help raise money for the awareness and research of arthritis. Although no arthritis foundations are located in Murray, this organization holds fundraisers such as the Jingle Bell Run across the state of KY welcoming all the state residents. I hope to provide a better understanding of osteoarthritis to the city of Murray. By hosting local community events to promote the study/ prevention of arthritis, we could lower the risk of developing OA in our community as a whole. Examples of events range from marathons, dinners, and biking events, to conferences, parties, and volunteer opportunities

Constitutional Law - Fifth Amendment - Double Jeopardy - Prosecutorial Misconduct

The Supreme Court of Pennsylvania has held that a finding on the defendant\u27s argument for discharge on double jeopardy grounds is premature, but indicated that the defendant cannot be retried if the prosecutorial misconduct is found on remand to have been intentional or in bad faith. Commonwealth v. Wallace, ___ Pa. ___, 455 A.2d 1187 (1983)

Producing Grain Sorghum : Extension Circular 1-51-2

Manual for growing and producing sorghum from start to finish

The Fourth H is for Health : Extension Circular 10-11-2

Because so much of your health depends upon the health and habits of all members of your family, this 4-H health project is devoted to Family Health. During the project year you will be expected to do the following: 1. Maintain good personal health habits. 2. Continue charting your growth curve. 3. Make two or more improvements in your family\u27s health habits or practices. 4. Maintain a family medical record

Low Medicaid Spending Growth Amid Rebounding State Revenues: Results From a 50-State Medicaid Budget Survey State Fiscal Years 2006 and 2007

Examines the implementation of the new Medicare prescription drug benefit and the rate of Medicaid spending growth and enrollment in 2006. Identifies possible state level changes in eligibility requirements, program expansion, and enrollment processes

Producing and Marketing Corn; A Manual for Nebraska 4-H Clubs : Extension Circular 1-02-2

A manual for producing and marketing corn. Discusses all aspects from selecting land and seed to cutting costs and maintaining income

4-H Beef Club Manual : Extension Circular 2-61-2

Revised and updated--Manual for raising a calf project. This includes all aspects from purchasing the calf to showing it and marketing it

Longevity and mortality in Kennel Club registered dog breeds in the UK in 2014

Abstract Background The domestic dog is one of the most diverse mammalian species, exhibiting wide variations in morphology, behaviour and morbidity across breeds. Therefore, it is not unexpected that breeds should also exhibit variation in mortality and longevity. While shorter longevity per se may not necessarily be a welfare issue, a generally foreshortened lifespan in a breed that is accompanied by a high prevalence of a particular cause of death may reveal potentially serious welfare concerns and highlight scope to improve breed welfare. Survey data gathered directly from owners offer useful insights into canine longevity and mortality that can support the overall evidence base for welfare reforms within breeds. Results Mortality data on 5663 deceased dogs registered with the UK Kennel Club were collected from an owner-based survey. The most commonly reported causes of death were old age (13.8%), unspecified cancer (8.7%) and heart failure (4.9%); with 5.1% of deaths reported as unknown cause. Overall median age at death was 10.33 years (interquartile range: 7.17–12.83 years). Breeds varied widely in median longevity overall from the West Highland Terrier (12.71 years) to the Dobermann Pinscher (7.67 years). There was also wide variation in the prevalence of some common causes of death among breeds, and in median longevity across the causes of death. Conclusion Substantial variation in the median lifespan and the prominent causes of death exists across breeds. This study has identified some breeds with both a low median lifespan and also a high proportional mortality for one or more specific causes of death that should be considered as both potential welfare concerns as well as opportunities for improvement