Carpet Plot - while wing loading was estimated at 90. As...

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Carpet Plot Carpet plot was another way to represent the constraints of XG Endeavour. Based on the current constraint diagram and the weight prediction from the sizing code, it was possible to make different plots and construct the carpet plot. Considering the important features of XG Endeavour, there were four main constraint plots, which were a) Estimated Gross Weight vs. Wing Loading at different Thrust to Weight ratio at the sea level, b) Estimated Gross Weight vs. Wing Loading at 2g maneuver, c) at takeoff ground roll and d) landing ground roll. For the Estimated Gross weight vs. Wing Loading, thrust to weight ratio at the sea level and the wing loading were 0.36 and 92.625, respectively. In order to make a carpet plot, both thrust to weight ratio at the sea level and wing loading varied by around ± 20%. For the easier calculation, thrust to weight ratio at the sea level(T/W) was estimated at 0.4,
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Unformatted text preview: while wing loading was estimated at 90. As the result, carpet plot of XG Endeavour is shown below. Figure. Gross Weight vs Wing Loading based on various thrust to weight ratio at the sea level. For the next step, estimated weights at takeoff ground roll and landing ground roll were calculated. These calculations were came from at first, taking exponential equations based on the takeoff ground roll of 4500ft and landing round roll of 2500ft. Then, use those equations to substitute the values of wing loading. After plotted and combined with the previous carpet plot above, ultimate carpet plot of XG Endeavour is shown below. Figure. Ultimate Carpet Plot of XG Endeavour. From the carpet plot above, it was possible to ensure that estimated gross weight calculation was reasonable. Also, from the plot, it is possible to conduct the off design....
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This document was uploaded on 10/24/2010.

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