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NACA-TN-1643
Effect of landing flaps and landing gear on the spin and recovery characteristics of airplanes
Year: 1948
Abstract: The effect of landing flaps and landing gear on the spin sans recovery characteristics of airplanes has been determined from investigation of the spinning characteristics of 58 models in the Langley 15-foot and 20-foot free-spinning tunnels.
The analysis indicated that generally an adverse effect on recovery characteristics was obtained when the flaps were in an extended position during the fully developed spin. An exception to this effect occurred when the model was heavily loaded along the fuselage and the ailerons were set with the spin, for which condition there ws either no effect or a favorable effect on recovery characteristics. It thus appears that if a spin is entered inadvertently with the landing flaps extended, the flaps, should usually be retracted immediately.
The analysis indicated that generally an adverse effect on recovery characteristics was obtained when the flaps were in an extended position during the fully developed spin. An exception to this effect occurred when the model was heavily loaded along the fuselage and the ailerons were set with the spin, for which condition there ws either no effect or a favorable effect on recovery characteristics. It thus appears that if a spin is entered inadvertently with the landing flaps extended, the flaps, should usually be retracted immediately.
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:31:29Z | |
| date available | 2017-09-04T15:31:29Z | |
| date copyright | 01/01/1948 | |
| date issued | 1948 | |
| identifier other | ODSTYDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/32978 | |
| description abstract | The effect of landing flaps and landing gear on the spin sans recovery characteristics of airplanes has been determined from investigation of the spinning characteristics of 58 models in the Langley 15-foot and 20-foot free-spinning tunnels. The analysis indicated that generally an adverse effect on recovery characteristics was obtained when the flaps were in an extended position during the fully developed spin. An exception to this effect occurred when the model was heavily loaded along the fuselage and the ailerons were set with the spin, for which condition there ws either no effect or a favorable effect on recovery characteristics. It thus appears that if a spin is entered inadvertently with the landing flaps extended, the flaps, should usually be retracted immediately. | |
| language | English | |
| title | NACA-TN-1643 | num |
| title | Effect of landing flaps and landing gear on the spin and recovery characteristics of airplanes | en |
| type | standard | |
| page | 15 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1948 | |
| contenttype | fulltext |