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#31
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Why acutate the spoilers with a lever on the stick instead of thespoilers?
On Nov 27, 2:26*pm, Eric Greenwell wrote:
Is there an operational reason for putting the brake on the stick instead of the spoiler? As opposed to, say, cost reasons? Several reasons: (1) No spoilers (like the HP-18 or my whale mentioned above) (2) Some people hate messing with spoilers to prevent rope overrun at hookup, because of operational considerations or because... (3) Many gliders pull down flaps with spoiler activation, so if you pull spoilers back to use brakes now you need to push flaps back up (take-off and landing) I think that's why many gliders have both... Why it never works ? A long rant plus discussion above... Hope that helps, See ya, Dave "YO electric" |
#32
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Why acutate the spoilers with a lever on the stick instead of the spoilers?
Which gliders add flaps when spoilers are activated?
At 22:12 27 November 2008, DRN wrote: On Nov 27, 2:26=A0pm, Eric Greenwell wrote: Is there an operational reason for putting the brake on the stick instead of the spoiler? As opposed to, say, cost reasons? Several reasons: (1) No spoilers (like the HP-18 or my whale mentioned above) (2) Some people hate messing with spoilers to prevent rope overrun at hookup, because of operational considerations or because... (3) Many gliders pull down flaps with spoiler activation, so if you pull spoilers back to use brakes now you need to push flaps back up (take-off and landing) I think that's why many gliders have both... Why it never works ? A long rant plus discussion above... Hope that helps, See ya, Dave "YO electric" |
#33
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Why acutate the spoilers with a lever on the stick instead of thespoilers?
On Nov 27, 7:00*pm, Nyal Williams wrote:
Which gliders add flaps when spoilers are activated? IIRC, LS, DG, Lange... |
#34
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Why acutate the spoilers with a lever on the stick instead of thespoilers?
On Nov 27, 5:00*pm, Nyal Williams wrote:
Which gliders add flaps when spoilers are activated? Ventus A/B and many Glasflügel ships. |
#35
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Why acutate the spoilers with a lever on the stick instead ofthe spoilers?
DRN wrote:
On Nov 27, 7:00 pm, Nyal Williams wrote: Which gliders add flaps when spoilers are activated? IIRC, LS, DG, Lange... Those are just brand names, eh? The LS-8 and the DG-400 don't add flaps! I believe the Nimbus 4 adds flaps with spoiler acutuation. -- Eric Greenwell - Washington State, USA * Change "netto" to "net" to email me directly * Updated! "Transponders in Sailplanes" http://tinyurl.com/y739x4 * New Jan '08 - sections on Mode S, TPAS, ADS-B, Flarm, more * "A Guide to Self-launching Sailplane Operation" at www.motorglider.org |
#36
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Why acutate the spoilers with a lever on the stick instead ofthe spoilers?
Which gliders add flaps when spoilers are activated? IIRC, LS, DG, Lange... Those are just brand names, eh? The LS-8 and the DG-400 don't add flaps! My LS6-b does. Tony V. |
#37
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Why acutate the spoilers with a lever on the stick instead ofthe spoilers?
Eric Greenwell wrote:
DRN wrote: On Nov 27, 7:00 pm, Nyal Williams wrote: Which gliders add flaps when spoilers are activated? IIRC, LS, DG, Lange... Those are just brand names, eh? The LS-8 and the DG-400 don't add flaps! I believe the Nimbus 4 adds flaps with spoiler acutuation. DuoDiscus x and later have interlinked airbrake and landing flap. |
#38
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Why acutate the spoilers with a lever on the stick instead ofthe spoilers?
Tim Taylor schrieb:
On Nov 27, 5:00 pm, Nyal Williams wrote: Which gliders add flaps when spoilers are activated? Ventus A/B and many Glasflügel ships. Schempp-Hirth: - Mini-Nimbus - Nimbus 3DM CU Markus |
#39
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Why acutate the spoilers with a lever on the stick instead of thespoilers?
On Nov 27, 8:48*pm, DRN wrote:
On Nov 27, 7:00*pm, Nyal Williams wrote: Which gliders add flaps when spoilers are activated? IIRC, LS, DG, Lange... I should have been a bit more precise. Some readers are not confused by models that have no flaps, but... ;-) The issue is when the SPOILER CONTROL moves the FLAP CONTROL. There's no problem with putting the wheel-brake on the spoiler with ships like the Ventus A/B, as the inboard flaps are pushed down by the trailing-edge spoilers with-out moving the flap control. If you select negative flaps for take-off or landing, then pull full spoiler, the flap CONTROL is unaffected and the outer control surfaces remain reflexed up as you pull the spoiler handle. The SPOILER CONTROL moves the FLAP CONTROL back in many FLAPPED gliders, for example recent FLAPPED gliders from LS, Lange, and I believe DG. This creates a bit of an operational issue with wheel-brake on spoilers only. In Antares, it is not necessary to use negative flap for powered takeoff or for landing roll-out as roll control is extremely good at low speeds (and in general). It does create a nuisance if you want to use negative flap for aerotow takeoff, only necessary with a wing- runner. For Antares my preference is no wing runner even for aerotow, which may seem odd but works extremely well. Even with full, water, its no problem. Hope that's a bit more clear ! Best Regards, Dave "YO electric" |
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