This is a study of NASA Parawing profiles.
The below graphics show profile outlines for NASA Parawing models 5, and 19-24. The line length data was taken from NASA TN D-5965 (described on the Nasa Parawing Research page and listed on the NASA Parawing Reports page).
The line length measurements were taken from the test harness, which used a different origin for the last mid panel and edge lines. NASA TN D-5936 (parawings 1-10) describes line length adjustment for free flight: "By comparing the line lengths for model 5 in table II with those in figure 28, it is found that an increase in the aft-keel-line length of about 0.04 lk and an increase in tip-line length of about 0.07 lk was necessary to rig for free flight."
A similar adjustment is used for the presentation here. This adjustment is constant across all profiles.
| Keel to Payload Separation Distance | Model & Source | ||
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| lk = 1.00 | lk = 1.25 | lk = 1.50 | |
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Nasa Parawing model 5 Source: technical report NASA TN D-5965 |
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Nasa Parawing model 19 Source: technical report NASA TN D-5965 |
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Nasa Parawing model 20 Source: technical report NASA TN D-5965 |
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Nasa Parawing model 21 Source: technical report NASA TN D-5965 |
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Nasa Parawing model 22 Source: technical report NASA TN D-5965 |
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Nasa Parawing model 23 Source: technical report NASA TN D-5965 |
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Nasa Parawing model 24 Source: technical report NASA TN D-5965 |
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The model 21 with nose lines has same profile as model 21 with 125Lk lines. In the models with an upwards bump in the nose, there is a corresponding sharp turndown in the tail.
Related articles:
Nasa Parawing Research
NASA Parawing Reports
