Effect of Reynolds number variation on aerodynamics of a hydrogen-fueled transport concept at Mach 6

Two separate tests have been made on the same blended wing-body hydrogen-fueled transport model at a Mach number of about 6 and a range of Reynolds number (based on theoretical body length) of 1.577 to 55.36 X 10 to the 6th power. The results of these tests, made in a conventional hypersonic blowdown tunnel and a hypersonic shock tunnel, are presented through a range of angle of attack from -1 to 8 deg, with an extended study at a constant angle of attack of 3 deg. The model boundary layer flow appeared to be predominately turbulent except for the low Reynolds number shock tunnel tests. Model wall temperatures varied considerably; the blowdown tunnel varied from about 255 F to 340 F, whereas the shock tunnel had a constant 70 F model wall temperature. The experimental normal-force coefficients were essentially independent of Reynolds number. A current theoretical computer program was used to study the effect of Reynolds number. Theoretical predictions of normal-force coefficients were good, particularly at anticipated cruise angles of attack, that is 2 to 5 deg. Axial-force coefficients were generally underestimated for the turbulent skin friction conditions, and pitching-moment coefficients could not be predicted reliably

Resort Recreation Programs for Conference Groups: Programs and Pricing

The increase in recreation programs for conference participants occurs at the intersection of three trends: 1 ) an increase in the number and frequency of business or association related meetings, 2) a corresponding increase in conferees accompanied by spouses and children, and 3) a growing interest, by the resort sector, in the business traveler. The data reported in this study examine the types of recreation programs provided by resorts when the primary purpose of visiting the resort is to attend a meeting or conference. Recreation programming and pricing data from resort recreation directors at 43 Resort and Commercial Recreation member properties are presented in this paper. General programming policies and patterns are presented as well as the most popular activities, recreation programs, conference theme parties and conference spouse programs arranged by recreation departments. Selected data about policy documents is presented with implications for resort recreation directors