Welcome to our book review site go-pdf.online!
You may have to Search all our reviewed books and magazines, click the sign up button below to create a free account.
NASA Technical Note
None
An Approach to the Problem of Estimating Severe and Repeated Gust Loads for Missile Operations
An analysis of available airplane measurements of vertical gust velocity is presented in order to arrive at a simple description of the frequency and intensity of gust velocities experienced by airplanes in operations. For the purpose of application to missile operations; the results obtained are modified to eliminate the effects of storm-avoidance procedures normally followed in airplane operations. The frequency distributions of gust velocity are then converted to a form appropriate for use in power spectral response calculations. Methods of applying the results to the estimation of the large and the small repeated loads in missile operations are then developed. Simple methods of estimating the gust loadings that will be exceeded with a given probability are presented in terms of missile response parameters and turbulence parameters. The limitations of the present results are also discussed briefly.
Tabulation of Mass-flow Parameters for Use in Design of Turbomachine Blade Rows for Ratios of Specific Heats of 1.3 and 1.4
Mass-flow tables for ratios of specific heats of 1.3 and 1.4 are presented for the entire range of critical velocity ratio. The tables enable a quick and accurate determination of the integrated average specific mass flow across a region where the end-point velocities are known, commensurate with the assumptions that the total state is constant and the static pressure varies linearly between the two velocities. A numerical example is included to illustrate the use of the tables. All quantities are in nondimensional form and are tabulated sgainst critical velocity ratio. The tables include specific-mass-flow parameter and ratio of static to total pressure.
