Reingestion characteristics and inlet flow distortion of V/STOL lift-engine fighter configurations
Reingestion characteristics and inlet flow distortion of V/STOL fighter powered by J-85 engine
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Reingestion characteristics and inlet flow distortion of V/STOL fighter powered by J-85 engine
Characteristics of V/STOL wall interference for closed circular wind tunnels
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Computer program for design and analysis of V/STOL tip turbine fans
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Algorithm for digital resolution of range for V/STOL aircraft
Engineering methods for predicting temperatures and velocities in vicinity of vertical lift engines of jet V/STOL aircraft operating near ground
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Computer graphics display program for use in terminal operations and V/STOL approach and departure path synthesis
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Terminal area operations of V/STOL aircraft, considering approaches, approach speeds, wind and velocity effects and noise
V/STOL aircraft flight path and attitude controls in turbulence, discussing design based on state variable methods of control theory
V/stol aircraft lift fan aerodynamics, discussing optimum fan pressure ratios, augmentation ratio, noise constraints, wing loading and fan configurations
The computer program described in this report calculates the design-point characteristics of a compressed-air generator for use in V/STOL applications such as systems with a tip-turbine-driven lift fan. The program computes the dimensions and mass, as well as the thermodynamic performance of a model air generator configuration which involves a straight through-flow combustor. Physical and thermodynamic characteristics of the air generator components are also given. The program was written in FORTRAN IV language. Provision has been made so that the program will accept input values in either SI units or U.S. customary units. Each air generator design-point calculation requires about 1.5 seconds of 7094 computer time for execution.
A review is given of limitations on approach flight paths of V/STOL aircraft, including limits on descent angle due to maximum drag/lift ratio. A method of calculating maximum drag/lift ratio of tilt-wing and deflected slipstream aircraft is presented. Derivatives and transfer functions for the CL-84 tilt-wing and X-22A tilt-duct aircraft are presented. For the unaugmented CL-84 in steep descents the transfer function relating descent angle to thrust contains a right-half plane zero. Using optimal control theory, it is shown that this zero causes a serious degradation in the accuracy with which steep flight paths can be followed in the presence of gusts.