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Cirrus Deploys Chute Safely
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"m alexander" wrote in message et... http://www.modbee.com/local/story/91...10080739c.html Yet another Cirrus flying in coffin corner at high altitude in turbulence. It seems to me that if airline pilots can be taught to do this without falling out of the sky, then surely a Cirrus pilot can be taught the same, or at least, like the rest of us, just stay out of there. |
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On Wed, 22 Sep 2004 08:12:30 -0700, "C J Campbell"
wrote: Yet another Cirrus flying in coffin corner at high altitude in turbulence. It seems to me that if airline pilots can be taught to do this without falling out of the sky, then surely a Cirrus pilot can be taught the same, or at least, like the rest of us, just stay out of there. How can you discern that from the story? Nothing in the text says that the airplane was at high altitude, only that it got into a spin due to extreme turbulence. Did you have access to additional information not given in the story that the posted URL gives you? My question would be: why was the pilot flying the airplane in a thunderstorm? Was he flying in clouds and encountered an embedded stormcell? Corky Scott |
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"Corky Scott" wrote in message ... On Wed, 22 Sep 2004 08:12:30 -0700, "C J Campbell" wrote: Yet another Cirrus flying in coffin corner at high altitude in turbulence. It seems to me that if airline pilots can be taught to do this without falling out of the sky, then surely a Cirrus pilot can be taught the same, or at least, like the rest of us, just stay out of there. How can you discern that from the story? Nothing in the text says that the airplane was at high altitude, only that it got into a spin due to extreme turbulence. Did you have access to additional information not given in the story that the posted URL gives you? My question would be: why was the pilot flying the airplane in a thunderstorm? Was he flying in clouds and encountered an embedded stormcell? http://www.duluthsuperior.com/mld/du...or/9723097.htm |
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On Wed, 22 Sep 2004 18:36:28 -0700, "C J Campbell"
wrote: "Corky Scott" wrote in message .. . On Wed, 22 Sep 2004 08:12:30 -0700, "C J Campbell" wrote: Yet another Cirrus flying in coffin corner at high altitude in turbulence. It seems to me that if airline pilots can be taught to do this without falling out of the sky, then surely a Cirrus pilot can be taught the same, or at least, like the rest of us, just stay out of there. How can you discern that from the story? Nothing in the text says that the airplane was at high altitude, only that it got into a spin due to extreme turbulence. Did you have access to additional information not given in the story that the posted URL gives you? My question would be: why was the pilot flying the airplane in a thunderstorm? Was he flying in clouds and encountered an embedded stormcell? http://www.duluthsuperior.com/mld/du...or/9723097.htm Can you expand on your comment about coffin corner? My understanding of coffin corner relates to jets flying high enough that their indicated cruise speed is approach their indicated stall speed. I looked up the SR22 POH for cruise speeds, stall speeds, etc. If the SR22 was throttled back for economy or maneuvering. 47% pwr cruise @ 16000 feet = 162 KTAS @ 16000 pressure altitude, 162 KTAS ~= 123 KIAS Even at worst case CG and weight, stall speed for the SR22 is 70 KIAS. That leaves margin of 53 kts. Seems ample to avoid a stall. I do wonder what caused the pilot to stall @ 16kft. -Nathan |
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Trying to maintain altitude in a T storm, rather than maintaing attitude?
That happened to the Canada guy supposedly. "Nathan Young" wrote in message ... On Wed, 22 Sep 2004 18:36:28 -0700, "C J Campbell" wrote: "Corky Scott" wrote in message .. . On Wed, 22 Sep 2004 08:12:30 -0700, "C J Campbell" wrote: Yet another Cirrus flying in coffin corner at high altitude in turbulence. It seems to me that if airline pilots can be taught to do this without falling out of the sky, then surely a Cirrus pilot can be taught the same, or at least, like the rest of us, just stay out of there. How can you discern that from the story? Nothing in the text says that the airplane was at high altitude, only that it got into a spin due to extreme turbulence. Did you have access to additional information not given in the story that the posted URL gives you? My question would be: why was the pilot flying the airplane in a thunderstorm? Was he flying in clouds and encountered an embedded stormcell? http://www.duluthsuperior.com/mld/du...or/9723097.htm Can you expand on your comment about coffin corner? My understanding of coffin corner relates to jets flying high enough that their indicated cruise speed is approach their indicated stall speed. I looked up the SR22 POH for cruise speeds, stall speeds, etc. If the SR22 was throttled back for economy or maneuvering. 47% pwr cruise @ 16000 feet = 162 KTAS @ 16000 pressure altitude, 162 KTAS ~= 123 KIAS Even at worst case CG and weight, stall speed for the SR22 is 70 KIAS. That leaves margin of 53 kts. Seems ample to avoid a stall. I do wonder what caused the pilot to stall @ 16kft. -Nathan |
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Pilot William Graham, 65, told authorities that his airplane, a Cirrus SR22,
stalled at 16,000 feet, then encountered turbulent weather at 13,000 to 15,000 feet that sent it into a spin, according to the Stockton Record newspaper. "C J Campbell" wrote in message ... "Corky Scott" wrote in message ... On Wed, 22 Sep 2004 08:12:30 -0700, "C J Campbell" wrote: Yet another Cirrus flying in coffin corner at high altitude in turbulence. It seems to me that if airline pilots can be taught to do this without falling out of the sky, then surely a Cirrus pilot can be taught the same, or at least, like the rest of us, just stay out of there. How can you discern that from the story? Nothing in the text says that the airplane was at high altitude, only that it got into a spin due to extreme turbulence. Did you have access to additional information not given in the story that the posted URL gives you? My question would be: why was the pilot flying the airplane in a thunderstorm? Was he flying in clouds and encountered an embedded stormcell? http://www.duluthsuperior.com/mld/du...or/9723097.htm |
#8
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This sounds simillar to the Canadian story. Why can these guys not recover
from the spins if they are so high? "m alexander" wrote in message et... http://www.modbee.com/local/story/91...10080739c.html |
#9
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"Dude" wrote in message ... This sounds simillar to the Canadian story. Why can these guys not recover from the spins if they are so high? The Cirrus cannot recover from spins. Here is a quote from the SR22 manual: Spins The SR22 is not approved for spins, and has not been tested or certified for spin recovery characteristics. The only approved and demonstrated method of spin recovery is activation of the Cirrus Airframe Parachute System (See CAPS Deployment, this section). Because of this, if the aircraft “departs controlled flight,” the CAPS must be deployed. While the stall characteristics of the SR22 make accidental entry into a spin extremely unlikely, it is possible. Spin entry can be avoided by using good airmanship: coordinated use of controls in turns, proper airspeed control following the recommendations of this Handbook, and never abusing the flight controls with accelerated inputs when close to the stall (see Stalls, Section 4). If, at the stall, the controls are misapplied and abused accelerated inputs are made to the elevator, rudder and/or ailerons, an abrupt wing drop may be felt and a spiral or spin may be entered. In some cases it may be difficult to determine if the aircraft has entered a spiral or the beginning of a spin. • WARNING • In all cases, if the aircraft enters an unusual attitude from which recovery is not expected before ground impact, immediate deployment of the CAPS is required. The minimum demonstrated altitude loss for a CAPS deployment from a one-turn spin is 920 feet. Activation at higher altitudes provides enhanced safety margins for parachute recoveries. Do not waste time and altitude trying to recover from a spiral/spin before activating CAPS. Inadvertent Spin Entry 1. CAPS .................................................. ........................... ...... Activate |
#10
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"C J Campbell" wrote in message ... The SR22 is not approved for spins, and has not been tested or certified for spin recovery characteristics. The only approved and demonstrated method of spin recovery is activation of the Cirrus Airframe Parachute System (See CAPS Deployment, this section). Because of this, if the aircraft "departs controlled flight," the CAPS must be deployed. Sounds like legal-speak to me. I'm am willing to bet that Cirrus has spun the hell out of that design with pleasing results. |
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