Committee on Assessment of Aircraft Winglets for Large Aircraft Fuel Efficiency's Books

The high cost of aviation fuel has resulted in increased attention by Congress and the Air Force on improving military aircraft fuel efficiency. One action considered is modification of the aircraft's wingtip by installing, for example, winglets to reduce drag. While common on commercial aircraft, such modifications have been less so on military aircraft. In an attempt to encourage greater Air Force use in this area, Congress, in H. Rept. 109-452, directed the Air Force to provide a report examining the feasibility of modifying its aircraft with winglets. To assist in this effort, the Air Force asked the NRC to evaluate its aircraft inventory and identify those aircraft that may be good candidates for winglet modifications. This reportâ€"which considers other wingtip modifications in addition to wingletsâ€"presents a review of wingtip modifications; an examination of previous analyses and experience with such modifications; and an assessment of wingtip modifications for various Air Force aircraft and potential investment strategies.

Over the past 5 years or more, there has been a steady and significant decrease in NASA's laboratory capabilities, including equipment, maintenance, and facility upgrades. This adversely affects the support of NASA's scientists, who rely on these capabilities, as well as NASA's ability to make the basic scientific and technical contributions that others depend on for programs of national importance. The fundamental research community at NASA has been severely impacted by the budget reductions that are responsible for this decrease in laboratory capabilities, and as a result NASA's ability to support even NASA's future goals is in serious jeopardy.

Because of the important national defense contribution of large, non-fighter aircraft, rapidly increasing fuel costs and increasing dependence on imported oil have triggered significant interest in increased aircraft engine efficiency by the U.S. Air Force. To help address this need, the Air Force asked the National Research Council (NRC) to examine and assess technical options for improving engine efficiency of all large non-fighter aircraft under Air Force command. This report presents a review of current Air Force fuel consumption patterns; an analysis of previous programs designed to replace aircraft engines; an examination of proposed engine modifications; an assessment of the potential impact of alternative fuels and engine science and technology programs, and an analysis of costs and funding requirements.

This report provides a critical review of toxicologic, epidemiologic, and other relevant data on jet-propulsion fuel 8, a type of fuel in wide use by the U.S. Department of Defense (DOD), and an evaluation of the scientific basis of DOD's interim permissible exposure level of 350 mg/m3

The reduction of the fire hazard of fuel is critical to improving survivability in impact-survivable aircraft accidents. Despite current fire prevention and mitigation approaches, fuel flammability can overwhelm post-crash fire scenarios. The Workshop on Aviation Fuels with Improved Fire Safety was held November 19-20, 1996 to review the current state of development, technological needs, and promising technology for the future development of aviation fuels that are most resistant to ignition during a crash. This book contains a summary of workshop discussions and 11 presented papers in the areas of fuel and additive technologies, aircraft fuel system requirements, and the characterization of fuel fires.

The two principal objectives of this book were (1) to identify promising materials technologies, design issues (both overall and for individual components), and fire performance parameters (both full scale and for individual components) that, if properly optimized, would lead to improved fire and smoke resistance of materials and components used in aircraft interiors; and (2) to identify long-range research directions that hold the most promise for producing predictive modeling capability, new advanced materials, and the required product development to achieve totally fire-resistant interiors in future aircrafts. The emphasis of the study is on long-term innovation leading to impacts on fire worthiness of aircraft interiors ten to twenty years hence.

This book describes the Conference on Fire and Smoke-Resistant Materials held at the National Academy of Sciences on November 8-10, 1994. The purpose of this conference was to identify trends in aircraft fire safety and promising research directions for the Federal Aviation Administration's program in smoke and fire resistant materials. This proceedings contains 15 papers presented by distinguished speakers and summaries of the workshop sessions concerning toxicity issues, fire performance parameters, drivers for materials development, and new materials technology.

The Live Fire Test Law mandates realistic survivability and lethality testing of covered systems or programs. A provision of the law permits the Secretary of Defense to waive tests if live fire testing would be "unreasonably expensive and impractical." Though no waiver was requested before the F-22 program entered engineering and manufacturing development, the Defense Department later asked that Congress enact legislation to permit a waiver to be granted retroactively. Rather than enact such legislation, Congress requested a study to explore the pros and cons of full-scale, full-up testing for the F-22 aircraft program. The book discusses the origin of testing requirements, evaluates the practicality, affordability, and cost-benefit of live fire tests, and examines the role of testing, modeling, and data bases in vulnerability assessment.

As part of the national effort to improve aviation safety, the Federal Aviation Administration (FAA) chartered the National Research Council to examine and recommend improvements in the aircraft certification process currently used by the FAA, manufacturers, and operators.

Book's by Committee on Assessment of Aircraft Winglets for Large Aircraft Fuel Efficiency

Assessment of Wingtip Modifications to Increase the Fuel Efficiency of Air Force Aircraft

Assessment of Wingtip Modifications to Increase the Fuel Efficiency of Air Force Aircraft

Assessment of Wingtip Modifications to Increase the Fuel Efficiency of Air Force Aircraft

Assessment of Wingtip Modifications to Increase the Fuel Efficiency of Air Force Aircraft

Capabilities for the Future

Capabilities for the Future

Improving the Efficiency of Engines for Large Nonfighter Aircraft

Improving the Efficiency of Engines for Large Nonfighter Aircraft

Improving the Efficiency of Engines for Large Nonfighter Aircraft

Improving the Efficiency of Engines for Large Nonfighter Aircraft

Toxicologic Assessment of Jet-Propulsion Fuel 8

Toxicologic Assessment of Jet-Propulsion Fuel 8

Aviation Fuels with Improved Fire Safety

Aviation Fuels with Improved Fire Safety

Fire- and Smoke-Resistant Interior Materials for Commercial Transport Aircraft

Fire- and Smoke-Resistant Interior Materials for Commercial Transport Aircraft

Improved Fire- and Smoke-Resistant Materials for Commercial Aircraft Interiors

Improved Fire- and Smoke-Resistant Materials for Commercial Aircraft Interiors

Live Fire Testing of the F-22

Live Fire Testing of the F-22

Improving the Continued Airworthiness of Civil Aircraft

Improving the Continued Airworthiness of Civil Aircraft

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