If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
|
#1
|
|||
|
|||
would an electric sustainer be practical
Just doing some day dreaming..........but why not make a sustainer,
capable of climbing out after a short winch/auto/aero tow and finding lift. I think the prop could be smaller, the HP of the engine lower, the battery capacity less. Plus I have just the spot in my Apis to put one! Brad |
#2
|
|||
|
|||
would an electric sustainer be practical
Brad wrote:
Just doing some day dreaming..........but why not make a sustainer, capable of climbing out after a short winch/auto/aero tow and finding lift. I think the prop could be smaller, the HP of the engine lower, the battery capacity less. Plus I have just the spot in my Apis to put one! My limited understanding is you can save on the motor weight by accepting a slow climb, and you can save on the battery weight by accepting a limited height climb. If you are happy with those compromises, go for it! -- Eric Greenwell - Washington State, USA * Change "netto" to "net" to email me directly * "Transponders in Sailplanes" http://tinyurl.com/y739x4 * Sections on Mode S, TPAS, ADS-B, Flarm, more * "A Guide to Self-launching Sailplane Operation" at www.motorglider.org |
#3
|
|||
|
|||
would an electric sustainer be practical
On Jul 23, 9:20*pm, Brad wrote:
would an electric sustainer be practical... Sadly, no. See: http://www.nadler.com/Antares/Lange_visit_20090410.html See ya, Dave "YO electric sometimes-18m-shorty" |
#4
|
|||
|
|||
would an electric sustainer be practical
Dave Nadler wrote:
On Jul 23, 9:20 pm, Brad wrote: would an electric sustainer be practical... Sadly, no. See: http://www.nadler.com/Antares/Lange_visit_20090410.html As long as Brad doesn't want to cruise long distances or climb to great heights, but is just looking for a couple thousand feet to get away from a low cost launch, it should be practical in the Apis. The electric motor would easily avoid the problems with two-stroke motor vibration that Lange is working to overcome, while offering even simpler, more reliable operation, all with no loss of power at high density locations. I'll bet those claims sound familiar! -- Eric Greenwell - Washington State, USA * Change "netto" to "net" to email me directly * "Transponders in Sailplanes" http://tinyurl.com/y739x4 * Sections on Mode S, TPAS, ADS-B, Flarm, more * "A Guide to Self-launching Sailplane Operation" at www.motorglider.org |
#5
|
|||
|
|||
would an electric sustainer be practical
At 02:04 24 July 2009, Dave Nadler wrote:
On Jul 23, 9:20=A0pm, Brad wrote: would an electric sustainer be practical... Sadly, no. See: http://www.nadler.com/Antares/Lange_visit_20090410.html See ya, Dave "YO electric sometimes-18m-shorty" Happily, not everyone agrees, see: http://www.dg-flugzeugbau.de/dg1000te-e.html Marc |
#6
|
|||
|
|||
would an electric sustainer be practical
On Jul 23, 10:15*pm, Marc Ramsey
wrote: At 02:04 24 July 2009, Dave Nadler wrote: On Jul 23, 9:20=A0pm, Brad *wrote would an electric sustainer be practical... Sadly, no. See: http://www.nadler.com/Antares/Lange_visit_20090410.html See ya, Dave "YO electric sometimes-18m-shorty" Happily, not everyone agrees, see: http://www.dg-flugzeugbau.de/dg1000te-e.html Marc Of course the most interesting detail was that DG was able to get German government support to help develop this project. |
#7
|
|||
|
|||
would an electric sustainer be practical
On Jul 24, 9:00*am, brianDG303 wrote:
On Jul 23, 10:15*pm, Marc Ramsey wrote: At 02:04 24 July 2009, Dave Nadler wrote: On Jul 23, 9:20=A0pm, Brad *wrote would an electric sustainer be practical... Sadly, no. See: http://www.nadler.com/Antares/Lange_visit_20090410.html See ya, Dave "YO electric sometimes-18m-shorty" Happily, not everyone agrees, see: http://www.dg-flugzeugbau.de/dg1000te-e.html Marc Of course the most interesting detail was that DG was able to get German government support to help develop this project. You might look to see what Greg Cole is doing with electric for the Sparrowhawk. The Apis isn't quite as light, but it's closer to that than to the Antares. Craig |
#8
|
|||
|
|||
would an electric sustainer be practical
In a year or three we will know the answer: Schempp-Hirth will be
offering the Arcus as an electrical self launcher with the engine from Lange and DG will be offering the DG1000 as an electric sustainer. As both factories are also offering those same gliders as pure gliders and with combustion engines, we will be able to compare how it all calculates. I suspect that the certification requirements are probably harder for self launchers than for sustainers, which will also contribute to the equation. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
IFR Practical test requirements | kevmor | Instrument Flight Rules | 13 | January 25th 07 07:18 PM |
Sustainer engine ignition noise (Solo2350) | Per | Soaring | 8 | January 4th 07 05:56 AM |
Practical welding? | mhorowit | Home Built | 21 | August 23rd 05 04:33 AM |
practical best range application? | xerj | Piloting | 15 | February 6th 05 11:48 PM |
DG goes the sustainer option. | Paul | Soaring | 25 | June 4th 04 12:16 AM |