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04-23-2014, 07:15 PM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,281
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How to Aim Landing Lights
I would like to get my landing light aimed as close as I can while building. I am building a 6A have have the duckworks lights. The instructions indicate aiming the lights straight ahead (light pattern on wall level with wing while plane is level.
I assume that I will be in a somewhat nose up attitude on Final plus I assume that I will still want a bit of down angle on the lights so that they illuminate the runway and not the air in front of me.
Does anyone have some guidance on aim the lights.
Thanks,
Larry
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04-23-2014, 08:17 PM
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Join Date: Oct 2012
Location: logan, utah
Posts: 405
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man mine were aimed so poorly when i bought my 6a, my night t and gs might as well had no landing light. my advice would be, if in doubt, aim low. after all, you want to see the ground. after i adjusted mine it was such a big difference. don't aim them straight out- you are going to be higher aoa especially in the flare.
__________________
Erik Mortenson
Rans S-20 low and slow
14 build working on wings
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04-23-2014, 08:46 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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On my -9, which is tail dragger, my left light is aimed straight out with the tail down. The right light is aimed straight out in the direction of flight. (Works great for shinning squirrels when the tail is down.)
I know you don't have a tail dragger but the combination works great on final. (After I land, I turn off the right light and just use the left one)
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
Last edited by N941WR : 04-24-2014 at 07:25 AM.
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04-23-2014, 09:44 PM
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Join Date: Jan 2012
Location: up up and away
Posts: 312
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There is an official procedure/document out there. I did this for a new business jet a few years ago. It was based on the aircraft being a certain altitude on the landing approach, and then a certain distance the lights should hit down the runway. Then using your typical approach angle of attack you aim the light accordingly. This was more of a procedure for initial design since it was a new airplane. I could probably dig up the document if you are interested.
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04-23-2014, 11:11 PM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,281
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Thanks for the replies here. If someone could tell me the typical nose up angle on final in degrees, I could do the math to figure out the best down angle for the light, assuming a 3* glide slope angle. Does anyone have a general number for this angle?
Larry
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04-24-2014, 04:49 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Larry, you'll have a nose DOWN angle with flaps extended.
Best,
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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04-24-2014, 06:13 AM
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Join Date: Sep 2011
Location: Edgewater, FL. KSFB
Posts: 1,116
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Sorry Larry I don't have an A model or the degrees of angle on the approach.
However after a night landing last night my mind is still fresh on my lighting angles.
As other have said you will want the pilot side pointing down to see the taxiway during ground operations. The opposite side will need to be almost straight out. The plane tends to point at the runway during landing.
Hope this helps.
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04-24-2014, 07:59 AM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,281
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Thanks for the guidance here. I will set them up for straight ahead this sounds like it will get me in the right neighborhood. Doesn't sound like the taxi light needs to be aimed much different so I'll set them a degree or two different and see which I like better.
Larry
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04-24-2014, 09:18 AM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Quote:
Originally Posted by lr172
Thanks for the guidance here. I will set them up for straight ahead this sounds like it will get me in the right neighborhood. Doesn't sound like the taxi light needs to be aimed much different so I'll set them a degree or two different and see which I like better.
Larry
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Think about aiming one down like us TD guys have. This seems to give a really good spread on final, which is why I mentioned my set up.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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