14 Sep 14 - Motor test run data added
|N° of launches / Time||5||40 mins|
|Wing Area||730 in²||47.1 dm²|
|Flying Weight||1 lb. 7.6 oz||668 g|
|Wing Loading||4.66 oz/ft²||14.2 g/dm²|
|Wing Cube Loading||2.1 - 'Glider' & light at that|
|Motor||Unknown make brushless outrunner 930 rpm/V|
|Propeller||AeroNaut 10" x 6" folder|
|Batteries||3S 2200mAh Turnigy Nano-Tech LiPo|
|Speed Controller||Turnigy Plush 12-E brushless - 12A (15A burst) - 2-4S LiPo - 2A BEC - Brake|
|Receiver||OrangeRx R620 - 6Ch - 2.4Ghz (Spektrum DSM2 compatible)|
|Servos||V Tail - 2 x Conrad 8g|
|Static performance||3S 2200mAh Turnigy Nano-Tech LiPo cells give 6000 RPM @ 11.4V drawing of 12.7A (145W), which is 101W/lb|
|Flight performance||Flies really well, looks
very realistic in flight; the motor & propeller are very quiet at cruise
power and the propeller near invisible when turning.
There is plenty of power and the V tail gives good authority; loops are pretty effortless. I think it might be nicer with ailerons but will fly it some more before deciding whether to fit them or not.
14 Sep 14 - Yesterday I decided that I needed to fit a hatch to the bottom as taking the wing off to disconnect/change packs was really annoying. The modification added 20g (0.7 oz.) to the Eagle; pretty trivial given the extremely low wing loading. The battery tray is a 4 strips of a hard liteply running laterally and 2 strips running fore/aft to make ladder. This 'ladder' was glued on top of the internal doubler, approximately centred where the battery sat before the modification. A Velcro retaining strap was fitted as the battery now hangs from the plate. The hatch is secured by a liteply tongue at the front and 2 pairs of magnets at the rear, which are glued to a ply plate on the fuselage base; a spacer was fitted to rebate them to allow for the thickness of 2 magnets.
13 Sep 14 - Flew the Eagle at White Waltham families day today; as always it attracted a fair bit of attention..
28 Dec 11 - I have eventually completed the Eagle. After toying with making it convertible between power and slope use, I decided that it wouldn't be much lighter in slope guise. I therefore just fitted it with a folding propeller as that would help protect the motor when landing anyway. When slope flying I could fit a small LiPo further forwards which would lighten it, but it's unlikely to be necessary given the low wing loading.
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