winch:launching
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winch:launching [2024/06/23 01:03] olliek created |
winch:launching [2024/08/17 22:59] (current) olliek [Take Up Slack] |
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| ====== Launching ====== | ====== Launching ====== | ||
| - | **IF YOU ARE NOT YET A QUALIFIED WINCH DRIVER: YOU CANNOT LAUNCH A GLIDER UNLESS YOU ARE UNDER THE DIRECT SUPERVISION OF A QUALIFIED WINCH DRIVER WHO HAS BEEN AUTHORISED TO SUPERVISE TRAINEES.** | + | **IF YOU ARE NOT YET A QUALIFIED WINCH DRIVER: YOU CANNOT LAUNCH A GLIDER UNLESS YOU ARE UNDER THE DIRECT SUPERVISION OF A QUALIFIED WINCH DRIVER WHO HAS BEEN AUTHORISED TO SUPERVISE TRAINEES.** |
| ===== Initial Radio Call ===== | ===== Initial Radio Call ===== | ||
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| Upon receiving the first radio call, you should start the winch and ensure that it is warm enough to launch. **Do not move the drum selector or put the winch into Drive yet.** | Upon receiving the first radio call, you should start the winch and ensure that it is warm enough to launch. **Do not move the drum selector or put the winch into Drive yet.** | ||
| - | If the requested cable does not make sense (e.g., requesting the ‘remaining cable’ when there are two cables out, or the cable the launch point is using is not the one you expected), request the launch point to confirm the cable again. | + | If the requested cable does not make sense (e.g., requesting the ‘remaining cable’ when there are two cables out or the cable the launch point is using is not the one you expected), request the launch point to confirm the cable again. |
| {{: | {{: | ||
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| Scan both the left- and right-hand circuits for possible conflicting traffic. Remember that, if a glider has passed perpendicular to the launch point, a launch cannot be started. | Scan both the left- and right-hand circuits for possible conflicting traffic. Remember that, if a glider has passed perpendicular to the launch point, a launch cannot be started. | ||
| + | |||
| + | Consider what the launching glider may do in the event of a launch failure and whether traffic joining the circuit may be affected. On light wind days, also consider that the tug may land on a reciprocal heading (towards the glider being launched). | ||
| ===== Take Up Slack ===== | ===== Take Up Slack ===== | ||
| - | **Base **— Winch, **TAKE UP SLACK**. \\ //(Do not respond)// | + | **Base **— Winch, **TAKE UP SLACK**.\\ |
| + | //(Do not respond)// | ||
| **If there is a substantial delay between the initial call and ‘TAKE UP SLACK’:** \\ | **If there is a substantial delay between the initial call and ‘TAKE UP SLACK’:** \\ | ||
| - | Ask the launch point to confirm the glider type and cable again. Avoid prompting them to provide a ‘yes’ or ‘no’ answer. \\ | + | Ask the launch point to confirm the glider type and cable again. Avoid prompting them to provide a ‘yes’ or ‘no’ answer.\\ |
| - | ✅ Good: ’**Confirm glider type and cable?**’ \\ | + | ✅ Good: ’**Confirm glider type and cable? |
| ❌ Avoid: ‘Confirm K21 on the North cable?’ | ❌ Avoid: ‘Confirm K21 on the North cable?’ | ||
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| **IF THE LIGHT TURNS SOLID OR YOU HEAR “STOP” OVER THE RADIO:** \\ | **IF THE LIGHT TURNS SOLID OR YOU HEAR “STOP” OVER THE RADIO:** \\ | ||
| - | Use your best judgement. Generally, if the glider is not off the ground, CUT THE POWER. | + | Cut the power IMMEDIATELY. Do not wait to see/ |
| ===== All Out ===== | ===== All Out ===== | ||
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| Over a period of around 3 seconds, steadily increase power to the required level. This often may be the throttle guide, but the glider may require more or less power depending on the conditions. **Remember: the throttle guide is a __guide__** , not an absolute solution. You can always push through the guide if you need more power. | Over a period of around 3 seconds, steadily increase power to the required level. This often may be the throttle guide, but the glider may require more or less power depending on the conditions. **Remember: the throttle guide is a __guide__** , not an absolute solution. You can always push through the guide if you need more power. | ||
| - | Keep in mind that lighter gliders such as the Libelle, K6 and K8 will come off the ground rather quickly. Likewise, heavy gliders such as the DG1000 and Arcus require considerable power to take-off, often requiring nearly full throttle. Don’t jerk the glider forward during acceleration. | + | Keep in mind that lighter gliders such as the Libelle, K6 and K8 will come off the ground rather quickly |
| Once you have sight of the glider, allow it to rotate into the full climb – this should take 3 to 5 seconds. Once the glider is climbing, use your best judgement and adjust the throttle as necessary. Some good indicators to look for include: | Once you have sight of the glider, allow it to rotate into the full climb – this should take 3 to 5 seconds. Once the glider is climbing, use your best judgement and adjust the throttle as necessary. Some good indicators to look for include: | ||
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| The pressure gauge shows the amount of pressure that the cables are placing on the winch’s transmission. It can be a good indicator of how well a glider is being launched. | The pressure gauge shows the amount of pressure that the cables are placing on the winch’s transmission. It can be a good indicator of how well a glider is being launched. | ||
| - | For single seaters, a pressure of 75 to 80 PSI should be reasonable. Likewise, for a two-seater, 90 to 100 PSI should be reasonable. The pressure may vary depending on the weight | + | For single seaters, a pressure of 75 to 80 PSI should be reasonable. Likewise, for a two-seater, 90 to 100 PSI should be reasonable. The pressure may vary greatly |
| If the pressure starts to exceed 110 PSI, start to lower the throttle. If the pressure exceeds 115 PSI, the glider is likely pulling back too hard, and you should consider cutting the power (causing a launch failure) to avoid a cable break. At high pressure levels, you may also feel the winch shaking slightly – this is an indication that you should slow down! | If the pressure starts to exceed 110 PSI, start to lower the throttle. If the pressure exceeds 115 PSI, the glider is likely pulling back too hard, and you should consider cutting the power (causing a launch failure) to avoid a cable break. At high pressure levels, you may also feel the winch shaking slightly – this is an indication that you should slow down! | ||
winch/launching.1719104609.txt.gz · Last modified: 2024/06/23 01:03 by olliek
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