2,021 research outputs found
Yaw head calibrations Goodyear Aircraft Corp.
No full textThis report covers ten yaw heads, supplied by the Goodyear Aircraft Corporation, that were calibrated in the Daniel Guggenheim Airship Institute 6'6" vertical wind tunnel in Akron, Ohio. The range of calibrations covered all possible combinations of inclinations of the yaw head from 30 degrees in a North direction to 30 degrees South, and from 30 degrees West to 30 degrees East at 5 degree increments. Two yawheads were calibrated over the entire range, and the remaining eight were just checked at representative points. The calibrations were run at wind tunnel velocity of approximately 50 knots
Wind tunnel tests on propelled airship model, Goodyear Aircraft Corp
No full textThis report covers the tests made on an airship model of 4:1 fineness ratio for the Goodyear Aircraft Corporation in the 6'6" vertical wind tunnel of the Daniel Guggenheim Airship Institute in Akron, Ohio. Propellers installed at both the nose and tail of the model were compared to a simulated conventional installation on the bottom of the model. Lift, drag, and pitching moment force tests were made with propeller speeds of 5,000, 7,000 and 10,000 r.p.m. The propellers at the nose and tail were inclined with respect to the axis in an attempt to investigate controllability effects. Wake survey and pressure distribution measurements were also made for the stern propulsion conditions
(Parts 1 and 2) Wind Tunnel Tests on Goodyear-Zeppelin Corp. Railroad Car Model
No full textThis report discusses a project that covered investigations of airflow over rail car models which were tested in the vertical wind tunnel of the Daniel Guggenheim Airship Institute in Akron, Ohio for the Goodyear-Zeppelin Corporation. These tests were conducted according to specifications provided by the Goodyear-Zeppelin Corporation. The models tested included two GZ streamline models and a model with practically no streamlining, furnished by the Brill Company of Philadelphia, Pennsylvania. All models were constructed to scale and were one-twelfth actual size
Centrifugal Load Tests on Hewitt Rubber Corp Bullet Proof Self Sealing Gas Tanks
No full textThis report describes tests conducted at the Daniel Guggenheim Airship Institute in Akron, Ohio for the Hewitt Rubber Corporation on the fuselage and rear wing tanks for the P-40 airplane. In these tests, the tanks were filled with water and subjected to centrifugal accelerations so as to duplicate as closely as possible the different design loads. Deflections of the tank walls were measured at certain points by simple wire pointers scratching on strips of waxed paper
Wind tunnel tests on amphibian model No. 23 The Duckling. The International Aviation Corp.
No full textThis report covers a series of wind tunnel force tests made on the "Duckling" to determine the relative effectiveness of wing flaps, elevator settings and a tail boom extension. These tests were made for The International Aviation Corporation in the 6'6" vertical wind tunnel of the Daniel Guggenheim Airship Institute in Akron, Ohio. The forces measured were lift, drag, and pitching moment about the center of gravity of the model. All force tests were made at approximately 100 miles per hour
Participatory Approaches in the Adaptive Reuse of two Dutch Private-Led Cultural Heritage Projects
No full textThere is increasing debate concerning citizen participation in the reuse and transformation of heritage sites.
However, the question of why and how participatory approaches are explored in private-led heritage adaptive
reuse receives limited attention. The paper shows why the communities should play an essential role in the
adaptive reuse of heritage sites in the two Dutch cases. The article is theoretically based on debates on social
sustainability and community participation in the adaptive reuse of heritage sites. The qualitative
investigation consisted of interviews with different actors. The study shows that the adaptive reuse ambitions
of the two Dutch heritage sites face difficulty in receiving the support of the local communities. The findings
show interest, expectations, and needs gaps between the private heritage and local communities. The
investigation indicates that the participation of the local community is lacking, and the mutual understanding
between the two is problematic, which has led to the stagnation of the adaptive reuse process of the heritage
sites. The paper suggests that the multi-stakeholder processes can identify the key stakeholders and address
how to activate key stakeholders to collaborate with available means on shared goals and interests
06-0178 FOREST OIL CORP. v. MCALLEN
No full text06-0178 Forest Oil Corp. and Daniel B. Worden v. James Argyle McAllen, et al. from Hidalgo County and the 13th District Court of Appeals, Corpus Christi/Edinburg For petitioners: Geoffrey L. Harrison, Houston For respondents: Craig T. Enoch and David Mor
Cash flow is cash and is a fact. Net income is just an opinion
No full textA company's profit after tax (or net income) is quite an arbitrary figure, obtained after assuming certain accounting hypotheses regarding expenses and revenues. On the other hand, its cash flow is an objective measure, a single figure that is not subject to any personal criterion. In general, to study a company's situation, it is more useful to operate with the cash flow (equity cash flow, free cash flow or capital cash flow) as it is a single figure, while the net income is one of several that can be obtained, depending on the criteria applied. Profit after tax (PAT) is equal to the equity cash flow when the company is not growing, buys fixed assets for an amount identical to depreciation, keeps debt constant, and only writes off or sells fully depreciated assets. Profit after tax (PAT) is also equal to the equity cash flow when the company collects in cash, pays in cash, holds no stock (this company's working capital requirements are zero), and buys fixed assets for an amount identical to depreciation. When making projections, the dividends and other forecast payments to shareholders must be exactly equal to expected equity cash flows.Cash flow; Net income; Equity cash flow; Free cash flow; Capital cash flow;
An Economic Analysis of Electron Accelerators and Cobalt-60 for Irradiating Food
No full textAverage costs per pound of irradiating food are similar for the electron accelerator and cobalt-60 irradiators analyzed in this study, but initial investment costs can vary by $1 million. Irradiation costs range from 0.5 to 7 cents per pound and decrease as annual volumes treated increase. Cobalt-60 is less expensive than electron beams for annual volumes below 50 million pounds. For radiation source requirements above the equivalent of 1 million curies of cobalt-60, electron beams are more economical.food irradiation, electron accelerators, cobalt-60, cost comparison, economies of size, Food Consumption/Nutrition/Food Safety,
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