Computational wing design studies relating to natural laminar flow

Two research studies are described which directly relate to the application of natural laminar flow (NLF) technology to transonic transport-type wing planforms. Each involved using state-of-the-art computational methods to design three-dimensional wing contours which generate significant runs of favorable pressure gradients. The first study supported the Variable Sweep Transition Flight Experiment and involves design of a full-span glove which extends from the leading edge to the spoiler hinge line on the upper surface of an F-14 outer wing panel. A wing was designed computationally for a corporate transport aircraft in the second study. The resulting wing design generated favorable pressure gradients from the leading edge aft to the mid-chord on both upper and lower surfaces at the cruise design point. Detailed descriptions of the computational design approach are presented along with the various constraints imposed on each of the designs

Computational design of natural laminar flow wings for transonic transport application

Two research programs are described which directly relate to the application of natural laminar flow (NLF) technology to transonic transport-type wind planforms. Each involved using state-of-the-art computational methods to design three-dimensional wing contours which generate significant runs of favorable pressure gradients. The first program supported the Variable Sweep Transition Flight Experiment and involves design of a full-span glove which extends from the leading edge to the spoiler hinge line on the upper surface of an F-14 outer wing panel. Boundary-layer and static-pressure data will be measured on this design during the supporting wind-tunnel and flight tests. These data will then be analyzed and used to infer the relationship between crossflow and Tollmein-Schlichting disturbances on laminar boundary-layer transition. A wing was designed computationally for a corporate transport aircraft in the second program. The resulting wing design generated favorable pressure gradients from the leading edge aft to the mid-chord on both upper and lower surfaces at the cruise design point. Detailed descriptions of the computational design approach are presented along with the various constraints imposed on each of the designs. Wing surface pressure distributions, which support the design objective and were derived from transonic three-dimensional analyses codes, are also presented. Current status of each of the research programs is included in the summary

Status Update on NASA's Integrated Systems Research Program

No abstract availabl

The UAS ARC Activities and NASA Project Alignment

Informational briefing on NASA activities related to the UAS integration in the NAS project

Dr. Edgar G. Waggoner

Dr. Waggoner is responsible for the overall planning, management and evaluation of the directorate’s efforts to conduct experimental flight research, and to test the most promising concepts and technologies from across the ARMD portfolio at an integrated system level. He supports the ARMD associate administrator in a broad range of mission directorate activities, including strategic and program planning, budget development, program review and evaluation, and external coordination. Previously, Waggoner was director of the Integrated Systems Research Program. He was also was on assignment from NASA to the former Joint Planning and Development Office in Washington, DC, where he served as director of the Interagency Architecture and Engineering Division responsible for technical leadership in the development of the Next Generation Air Transportation System (NextGen) Enterprise Architecture, Concept of Operations, and Integrated Work Plan. While on this assignment, he served as a co-author of the Mobility chapter for the National Aeronautics Research and Development Plan. Waggoner began his NASA career in 1982 as a researcher in the theoretical aerodynamics discipline at NASA’s Langley Research Center. He eventually held management positions in Langley’s transonic and subsonic aerodynamics branches responsible for planning and supervision of applied computational and experimental research directed at developing aerodynamics technology for advanced civil and military vehicles. Prior to NASA, Waggoner was a researcher and project engineer with Vought Corporation in Dallas, Texas, where he worked on advanced wind tunnel testing techniques and performed foundational work in the emerging field of computational fluid dynamics. He has been awarded several NASA Group Achievement Awards and NASA Special Act or Service Awards and has authored or coauthored 44 NASA technical papers, journal articles and conference publications on computational and experimental aerodynamics, and advanced airspace systems concepts. He is an associate fellow of the American Institute of Aeronautics and Astronautics. Waggoner received a bachelor’s degree in aerospace engineering from Auburn University, a master’s degree in mechanical engineering from Southern Methodist University, and master’s and doctoral degrees in engineering management from George Washington University.https://commons.erau.edu/faa-uas-bios/1025/thumbnail.jp

Does Implementation of Biomathematical Models Mitigate Fatigue and Fatigue-related Risks in Emergency Medical Services Operations? A Systematic Review

Uvod: Bolesti štitnjače smatraju se kasnom komplikacijom alogenične transplantacije krvotvornih matičnih stanica. Abnormalna funkcija štitnjače u navedenoj populaciji bolesnika javlja se s učestalošću od 2-56%, ovisno o primarnoj bolesti, vrsti liječenja uslijed i nakon transplantacije te starosti u vrijeme transplantacije. U ovom radu istražujemo postoji li povezanost između bolesti štitnjače i kronične reakcije transplantanta protiv primatelja. ----- Bolesnici i metode: U periodu od lipnja 2013. do ožujka 2018. u studiju je uključeno 118 bolesnika kod kojih je učinjena transplantacija koštane srži. Ovisno o tome jesu li razvili cGvHD, podijeljeni su u dvije grupe: cGvHDpat (n=71) i non-cGvHDpat (n=47). ----- Rezultati: Do poremećaja funkcije štitnjače došlo je u u 30% bolesnika u grupi s cGvHD, odnosno u 19% bolesnika u grupi kod bez cGvHD-a. Najčešće nađena vrsta poremećaja funkcije štitnjače u obje skupine bila je subklinička hipotireoza (67% i 44%). ----- Zaključak: Bolesti štitnjače kasna su komplikacija post alo-TKMS. Nije pokazana signifikantna značajnost da je cGvHD rizični čimbenik za povećanu incidenciju bolesti štitnjače. Također, nije pokazana signifikantna razlika u kumulativnoj incidenciji bolesti štitnjače u grupi cGvHDpat, odnosno non-cGvHDpat. Kod bolesnika koji su uz cGvHD imali i poremećaj funkcije štitnjače pojavile su se u većoj mjeri i bolesti pluća, gastrointestinalnog trakta, jetre, kože, usta i, u najvećem omjeru, bolesti očiju.Introduction: Thyroid diseases are regarded as long-term complications after allogeneic hematopoietic stem cell transplantation. Abnormal thyroid function in this population occurs in 2-56% of patients, depending on primary disease, type of treatment due to and after transplantation and the age at time of transplantation. The aim of this study was to identify whether there is an association between thyroid dysfunction and cGvHD, and to describe the characteristics of the affected patients. ----- Patients and methods: In period from June 2013 till March 2018 118 patients who survived the transplantation were included in this study. Depending on whether they developed cGvHD or not, they were divided into two groups: cGvHDpat (n=71) and non-cGvHDpat (n=47). ----- Results: Abnormal thyroid function occurred in 30% of patients and 19% of controls. The most frequent noticed thyroidopathy in patients and controls was subclinical hypothyreosis, 67% and 44%, respectively. ----- Conclusion: Thyroid dysfunction is a long-term complication after allogeneic hematopoietic stem cell transplantation. We did not prove that chronic graft versus host disease is a significant risk factor for the increased incidence of thyroid diseases in patients after transplantation. There was no significant difference in cumulative incidence of thyroid disease in groups of cGvHDpat and non-cGvHDpat. Dysfunction of lungs, gastrointestinal tract, liver, skin, mouth, and in the biggest ratio, diseases of eyes were more prevalent in patients who developed cGvHD and had abnormal thyroid function