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#1
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Mini-Nimbus experience
On Wednesday, August 26, 1998 7:00:00 AM UTC, Albin O. Schreiter wrote:
On Wed, 26 Aug 1998 16:31:07 +0200, (Miriano Ravazzolo) wrote: My experience on those spoilers are only on the Libelle. Maybe what can be said is that this kind of things have to be used a little bit more "slowly" than a SH air-brake. You can actually close them everytime, even during flare, if you consider them as a kind of "active elements" which modify not only your drag but also your asset. If you close them abbruptly, before starting the new (flatter) angle the nose will drop a little to let you gain a bit of more speed, and this is not advisable too close to the ground. Miriano Ravazzolo Your experience on a Libelle does not help much with the Mini-Nimbus flap/trailing edge dive brakes. On the Mini it is just about essential NOT to close the system slowly. The correct way is to close flap/divebrake fast and completely, and to then start over again to whatever setting is appropriate. This avoids the danger of stalling inadvertently. Remove NOSPAM from return address before replying this is a fascinating discussion about the flap/spoiler combination but I would like to know about the all flying tail and what issues that might present to the new (low time) pilot. Is it as bad as several other discussions and articles would lead one to believe or is it something that can be "lived with" once understood? |
#3
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Mini-Nimbus experience
On 2014-08-05 11:48:05 +0000, said:
On Wednesday, August 26, 1998 7:00:00 AM UTC, Albin O. Schreiter wrote: On Wed, 26 Aug 1998 16:31:07 +0200, (Miriano Ravazzolo) wrote: My experience on those spoilers are only on the Libelle. Maybe what can be said is that this kind of things have to be used a little bit more "slowly" than a SH air-brake. You can actually close them everytime, even during flare, if you consider them as a kind of "active elements" which modify not only your drag but also your asset. If you close them abbruptly, before starting the new (flatter) angle the nose will drop a little to let you gain a bit of more speed, and this is not advisable too close to the ground. Miriano Ravazzolo Your experience on a Libelle does not help much with the Mini-Nimbus flap/trailing edge dive brakes. On the Mini it is just about essential NOT to close the system slowly. The correct way is to close flap/divebrake fast and completely, and to then start over again to whatever setting is appropriate. This avoids the danger of stalling inadvertently. Remove NOSPAM from return address before replying this is a fascinating discussion about the flap/spoiler combination but I would like to know about the all flying tail and what issues that might present to the new (low time) pilot. Is it as bad as several other discussions and articles would lead one to believe or is it something that can be "lived with" once understood? Where *do* these 16 year old posts come from? Re Libelle: the Club Libelle does in fact have similar airbrake/flap though t's not usable as flaps without airbrakes. Opening the airbrakes *lowered* the stall speed by 5 knots or so. Some say you can't close them near the ground but that's of course rubbish as long as you're safely above the clean stall speed. The thing slows down so fast in level flight with full brakes that there's no reason *not* to carry decent speed until the flare. The brakes are effective enough that 120 kg me could do a near as dammit vertical descent at 85 knots. I did about 60 hours in that Club Libelle before my club sold her when it got two PW5s (let's not talk about that...), but here are some recent pics of her at her current home near Whangarei: https://farm5.staticflickr.com/4014/...d9d14139_b.jpg https://scontent-a-sea.xx.fbcdn.net/...33059112_n.jpg https://fbcdn-sphotos-f-a.akamaihd.n...5d92aaae6fa4ff The first shows open brakes from above. In the second the "flap" part of the brakes is visible below the wing. |
#4
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Mini-Nimbus experience
On Tuesday, August 5, 2014 7:31:28 PM UTC-7, Bruce Hoult wrote:
On 2014-08-05 11:48:05 +0000, said: On Wednesday, August 26, 1998 7:00:00 AM UTC, Albin O. Schreiter wrote: On Wed, 26 Aug 1998 16:31:07 +0200, (Miriano Ravazzolo) wrote: My experience on those spoilers are only on the Libelle. Maybe what can be said is that this kind of things have to be used a little bit more "slowly" than a SH air-brake. You can actually close them everytime, even during flare, if you consider them as a kind of "active elements" which modify not only your drag but also your asset. If you close them abbruptly, before starting the new (flatter) angle the nose will drop a little to let you gain a bit of more speed, and this is not advisable too close to the ground. Miriano Ravazzolo Your experience on a Libelle does not help much with the Mini-Nimbus flap/trailing edge dive brakes. On the Mini it is just about essential NOT to close the system slowly. The correct way is to close flap/divebrake fast and completely, and to then start over again to whatever setting is appropriate. This avoids the danger of stalling inadvertently. Remove NOSPAM from return address before replying this is a fascinating discussion about the flap/spoiler combination but I would like to know about the all flying tail and what issues that might present to the new (low time) pilot. Is it as bad as several other discussions and articles would lead one to believe or is it something that can be "lived with" once understood? Where *do* these 16 year old posts come from? Re Libelle: the Club Libelle does in fact have similar airbrake/flap though t's not usable as flaps without airbrakes. Opening the airbrakes *lowered* the stall speed by 5 knots or so. Some say you can't close them near the ground but that's of course rubbish as long as you're safely above the clean stall speed. The thing slows down so fast in level flight with full brakes that there's no reason *not* to carry decent speed until the flare. The brakes are effective enough that 120 kg me could do a near as dammit vertical descent at 85 knots. I did about 60 hours in that Club Libelle before my club sold her when it got two PW5s (let's not talk about that...), but here are some recent pics of her at her current home near Whangarei: https://farm5.staticflickr.com/4014/...d9d14139_b.jpg https://scontent-a-sea.xx.fbcdn.net/...33059112_n.jpg https://fbcdn-sphotos-f-a.akamaihd.n...5d92aaae6fa4ff The first shows open brakes from above. In the second the "flap" part of the brakes is visible below the wing. I'll tell you where these 16 year old posts come from: There are no dates on most of these, or if there are, they're hard to find. One of my biggest internet pet peeves is this one. EVERY posting should have a date, INCLUDING THE YEAR so we don't look like idiots posting to messages left during the ice age. |
#5
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Mini-Nimbus experience
On Tue, 11 Nov 2014 01:21:32 -0800, murphydrj wrote:
I'll tell you where these 16 year old posts come from: Actually, you didn't tell us anything on the sort - you merely moaned about hard to find dates. They certainly didn't come from an NNTP server, which seldom keep anything for more than a year or so. Most news readers also expire old articles. I use Pan, which has a server-dependent expiry period which defaults to three months. The news reading experience is better if you use a news reader: they are generally faster, have a better user interface and, last but not least, usually have a decent kill-file capability. The usual suspect for old junk is some web-based news archiver like Google Groups, formerly known as Deja Vu before Google bought and disimproved it. There are no dates on most of these, or if there are, they're hard to find. If you *must* use something like that to view current NNTP articles, it really is your responsibility to check the date before posting. One of my biggest internet pet peeves is this one. EVERY posting should have a date, INCLUDING THE YEAR so we don't look like idiots posting to messages left during the ice age. I've got news for you: they do, so NNTP servers and readers know when to expire old articles. Without dates you can't do this and an article without a date will, hopefully, be treated as very old and expired immediately. Poorly designed and written news archivers and web apps, which operate outside the limits of the NNTP protocol may or may not insist on dated articles and can and will do what they please with dates. Let the user beware. -- martin@ | Martin Gregorie gregorie. | Essex, UK org | |
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