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Choose one, please.
18. H540 CFI Which statement is true concerning the aerodynamic conditions which occur during a spin entry? A) After a full stall, both wings remain in a stalled condition throughout the rotation. B) After a partial stall, the wing that drops remains in a stalled condition while the rising wing regains and continues to produce lift, causing the rotation. C) After a full stall, the wing that drops continues in a stalled condition while the rising wing regains and continues to produce some lift, causing the rotation. |
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![]() wrote in message ... Choose one, please. 18. H540 CFI Which statement is true concerning the aerodynamic conditions which occur during a spin entry? A) After a full stall, both wings remain in a stalled condition throughout the rotation. B) After a partial stall, the wing that drops remains in a stalled condition while the rising wing regains and continues to produce lift, causing the rotation. C) After a full stall, the wing that drops continues in a stalled condition while the rising wing regains and continues to produce some lift, causing the rotation. B |
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According to the Airplane Flying Handbook, FAA-H-8083-3, in its discussion
of spins, "the rising wing is less stalled than the descending wing..." which indicates to me that answer C is correct. "Less stalled than" means that some lift is being developed. This is not a black-and-white answer, though...it has been haggled over for decades. Bob Gardner wrote in message ... Choose one, please. 18. H540 CFI Which statement is true concerning the aerodynamic conditions which occur during a spin entry? A) After a full stall, both wings remain in a stalled condition throughout the rotation. B) After a partial stall, the wing that drops remains in a stalled condition while the rising wing regains and continues to produce lift, causing the rotation. C) After a full stall, the wing that drops continues in a stalled condition while the rising wing regains and continues to produce some lift, causing the rotation. |
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And I would read that as "both wings are stalled"... It's a very poorly
written question or very well written (depending on your point-of-view). I consider it poorly written because the answer is not clear in the training materials AND not clear on the exam. Chris Bob Gardner wrote: According to the Airplane Flying Handbook, FAA-H-8083-3, in its discussion of spins, "the rising wing is less stalled than the descending wing..." which indicates to me that answer C is correct. "Less stalled than" means that some lift is being developed. This is not a black-and-white answer, though...it has been haggled over for decades. Bob Gardner wrote in message ... Choose one, please. 18. H540 CFI Which statement is true concerning the aerodynamic conditions which occur during a spin entry? A) After a full stall, both wings remain in a stalled condition throughout the rotation. B) After a partial stall, the wing that drops remains in a stalled condition while the rising wing regains and continues to produce lift, causing the rotation. C) After a full stall, the wing that drops continues in a stalled condition while the rising wing regains and continues to produce some lift, causing the rotation. |
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This question has been on FAA knowledge exams since the 1960s, in one form
or another, and pilots have been trying to figure out what the FAA wants for at least that long. Bob Gardner "Chris G." nospam@noemail wrote in message eenews.net... And I would read that as "both wings are stalled"... It's a very poorly written question or very well written (depending on your point-of-view). I consider it poorly written because the answer is not clear in the training materials AND not clear on the exam. Chris Bob Gardner wrote: According to the Airplane Flying Handbook, FAA-H-8083-3, in its discussion of spins, "the rising wing is less stalled than the descending wing..." which indicates to me that answer C is correct. "Less stalled than" means that some lift is being developed. This is not a black-and-white answer, though...it has been haggled over for decades. Bob Gardner wrote in message ... Choose one, please. 18. H540 CFI Which statement is true concerning the aerodynamic conditions which occur during a spin entry? A) After a full stall, both wings remain in a stalled condition throughout the rotation. B) After a partial stall, the wing that drops remains in a stalled condition while the rising wing regains and continues to produce lift, causing the rotation. C) After a full stall, the wing that drops continues in a stalled condition while the rising wing regains and continues to produce some lift, causing the rotation. |
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There is a movie documenting Richard Bach's late-70's barnstorming trip
around the country with a pair of Fleet biplanes (same name as the book, but I cannot remember what the title is). In one segment, he attaches flares to the wingtips and goes flying, ignites the flares and in the course of the flight, stalls and spins the aircraft. It is at this point the a picture makes clear what is happening with the wings. The smoke from the flare on the outside (flying) wing streams behind the wingtip, while the smoke from the flare on the inside (stalled) wing wafts slowly upward. This was filmed from the air from the accompanying aircraft. Chris G. wrote: And I would read that as "both wings are stalled"... It's a very poorly written question or very well written (depending on your point-of-view). I consider it poorly written because the answer is not clear in the training materials AND not clear on the exam. |
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jsmith wrote:
There is a movie documenting Richard Bach's late-70's barnstorming trip around the country with a pair of Fleet biplanes (same name as the book, but I cannot remember what the title is). In one segment, he attaches flares to the wingtips and goes flying, ignites the flares and in the course of the flight, stalls and spins the aircraft. It is at this point the a picture makes clear what is happening with the wings. The smoke from the flare on the outside (flying) wing streams behind the wingtip, while the smoke from the flare on the inside (stalled) wing wafts slowly upward. This was filmed from the air from the accompanying aircraft. It would be more helpful if someone placed the smoke generators about mid-span so that the smoke passed over the wing. That would be a much more accurate indication of how well the outside wing was actually flying. George Patterson Why do men's hearts beat faster, knees get weak, throats become dry, and they think irrationally when a woman wears leather clothing? Because she smells like a new truck. |
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![]() George Patterson wrote: jsmith wrote: There is a movie documenting Richard Bach's late-70's barnstorming trip around the country with a pair of Fleet biplanes (same name as the book, but I cannot remember what the title is). In one segment, he attaches flares to the wingtips and goes flying, ignites the flares and in the course of the flight, stalls and spins the aircraft. It is at this point the a picture makes clear what is happening with the wings. The smoke from the flare on the outside (flying) wing streams behind the wingtip, while the smoke from the flare on the inside (stalled) wing wafts slowly upward. This was filmed from the air from the accompanying aircraft. It would be more helpful if someone placed the smoke generators about mid-span so that the smoke passed over the wing. That would be a much more accurate indication of how well the outside wing was actually flying. Correct me if I'm wrong (it happened once b-4) but a stalled wing is one which is not producing enuf lift to hold up the associated weight. A stalled wing can still be moving forward, even as it falls toward Momma Earth. Also, in a spin don't you always have one wing rotaring around a point defined by the lower wingtip? The smoke in the above example acts exactly as I would expect it to. I'd answer A. BTW, does anyone know what answer the FAA considers correct??? Why do men's hearts beat faster, knees get weak, throats become dry, and they think irrationally when a woman wears leather clothing? Because she smells like a new truck. ---Hilarious!!!! |
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