A computer program for calculating design and off-design performance for turbojet and turbofan engines

Program uses component performance maps to enable user to do analytical engine cycle calculations. Through scaling procedure, each of the component maps can be used to represent a family of maps. Either convergent or convergent-divergent nozzles may be used

Determining Default Probabilities for FSA Direct Loans

A binomial logit model was used to analyze relationships between financial characteristics and loan performance for FSA direct borrowers receiving direct FO or OL loans in fiscal 2005. Not surprisingly, the results indicate a strong and direct relationship between many key financial variables and probability of default. Production specialization, however, was indicated to have just as important an impact on probability of default as many financial variables. Other strong indicators included farm size, membership in a targeted group, and the ability to obtain credit from commercial lenders.FSA credit programs, loan defaults, credit risk models, risk rating, Agricultural Finance, Financial Economics,

Preliminary QCGAT program test results

NASA Lewis Research Center is conducting a program to demonstrate that large commercial engine technology can be applied to general aviation engines to reduce noise, emissions and fuel consumption and to develop new technology where required. The overall engine program, design, and technology incorporated into the QCGAT engines are described. In addition, preliminary engine test results are presented and compared to the technical requirements the engines were designed to meet

Explaining Regional Demand for Federal Farm Credit Programs: An Ordinal Probit Approach

Demand for federally subsidized farm credit varies regionally, with farm borrowers in some regions very dependent on USDA credit programs. Counties are grouped based on their level of demand for Farm Service Agency (FSA) direct farm ownership (FO) and farm operating loans (OL). Ordinal probit techniques are applied to analyze factors influencing county-level variation in the use of the loan programs. Results suggest that counties with the highest level of demand are more likely to have a Farm Credit System branch office, are more likely to be dependent on farming, have a greater share of farms owing debt, and have fewer guaranteed FSA borrowers and racial and ethnic minorities.Agricultural Finance, Demand and Price Analysis,

Continued strength at Tenth District banks

Commercial banks in Tenth District states continued to perform well in the first half of 1994. Profitability leveled off at a high level, asset quality improved, and loan growth accelerated. Based on these performance measures, banks in district states once again outperformed banks in the rest of the nation.Bank profits ; Federal Reserve District, 10th

The Competitiveness of Farm Credit Markets in a Deregulated Environment

Despite the proliferation of banking offices occurring since banking deregulation, about one-third of all counties in the US were still considered to have little competition with respect to agricultural credit. Counties considered less competitive were located in regions where farming is less prevalent; Northeast, Mid-Atlantic, Appalachia, and Southeast. There was no evidence that farm interest rates charged by commercial banks were higher regions with less competition. Higher FCS interest rates in counties with less competitive suggested that full-time commercial-size farms may be disadvantaged by a lack of credit market competition.Agricultural Finance,

High performance forward swept wing aircraft

A high performance aircraft capable of subsonic, transonic and supersonic speeds employs a forward swept wing planform and at least one first and second solution ejector located on the inboard section of the wing. A high degree of flow control on the inboard sections of the wing is achieved along with improved maneuverability and control of pitch, roll and yaw. Lift loss is delayed to higher angles of attack than in conventional aircraft. In one embodiment the ejectors may be advantageously positioned spanwise on the wing while the ductwork is kept to a minimum

Comparative assessment of out-of-core nuclear thermionic power systems

The hardware selections available for fabrication of a nuclear electric propulsion stage for planetary exploration were explored. The investigation was centered around a heat-pipe-cooled, fast-spectrum nuclear reactor for an out-of-core power conversion system with sufficient detail for comparison with the in-core system studies completed previously. A survey of competing power conversion systems still indicated that the modular reliability of thermionic converters makes them the desirable choice to provide the 240-kWe end-of-life power for at least 20,000 full power hours. The electrical energy will be used to operate a number of mercury ion bombardment thrusters with a specific impulse in the range of about 4,000-5,000 seconds