|
| 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
January 1st 20, 09:08 PM
posted to rec.aviation.soaring
|
|||
|
|||
Locating Transponder Antenna on top of the fuselage instead ofunder it.
From the Aircraft Spruce website, the drag spec on a rod and ball transponder antenna is listed as 0.41 lbs. at 250 kts. The blade type lists as 0.09 lbs. at 250 knots. Drag increases by the square of the speed, so at half the speed (125 knots), the drag is around 1/4 the numbers listed. If you are concerned about the .0225 lbs. in extra drag vs. the .01025 lbs., buy the blade type and keep the yaw string straight. You will probably increase your final glide numbers by at least a couple of yards.
|
|
#2
January 2nd 20, 01:25 AM
posted to rec.aviation.soaring
|
|||
|
|||
|
Locating Transponder Antenna on top of the fuselage instead ofunder it.
Mark Mocho wrote:
"If you are concerned about the .0225 lbs. in extra drag vs. the .01025 lbs.., buy the blade type and keep the yaw string straight. You will probably increase your final glide numbers by at least a couple of yards." But Mark, the blade type just looks cool! Especially when mounted on top! 😛😂😵
|
|
#3
January 2nd 20, 03:44 AM
posted to rec.aviation.soaring
|
|||
|
|||
|
Locating Transponder Antenna on top of the fuselage instead ofunder it.
But I have flown with you, Cliff, and the drag from the antenna is only low when aligned with the airflow. Your yaw string looks like a windshield wiper! You don't go faster by using the rudder pedals like bicycle pedals.
|
|
#4
January 2nd 20, 05:41 AM
posted to rec.aviation.soaring
|
|||
|
|||
|
Locating Transponder Antenna on top of the fuselage instead ofunder it.
Thanks. I needed a laugh.
|
|
#5
January 2nd 20, 11:44 PM
posted to rec.aviation.soaring
|
|||
|
|||
|
Locating Transponder Antenna on top of the fuselage instead ofunder it.
Just mount the blade antenna by the front lug only, leave it loose a bit. Cut a slight smile slot for the coax, use a bit of grease, and,voila!
Now your blade style antenna can feather with the wind, netting you the least amount of drag possible. ;-)
|
|
#6
January 3rd 20, 01:50 AM
posted to rec.aviation.soaring
|
|||
|
|||
|
Locating Transponder Antenna on top of the fuselage instead ofunder it.
On Thursday, January 2, 2020 at 3:44:53 PM UTC-8, Chris Behm wrote:
Just mount the blade antenna by the front lug only, leave it loose a bit. Cut a slight smile slot for the coax, use a bit of grease, and,voila! Now your blade style antenna can feather with the wind, netting you the least amount of drag possible. ;-) Why not mount it on the side of the fuselage and use it as an angle of attack sensor as well?
|
|
#7
January 3rd 20, 02:16 AM
posted to rec.aviation.soaring
|
|||
|
|||
|
Locating Transponder Antenna on top of the fuselage instead ofunder it.
Don't forget to properly mass balance any movable surface.
|
|
#8
January 3rd 20, 03:09 AM
posted to rec.aviation.soaring
|
|||
|
|||
|
Locating Transponder Antenna on top of the fuselage instead ofunder it.
On Thursday, January 2, 2020 at 5:51:01 PM UTC-8, jfitch wrote:
On Thursday, January 2, 2020 at 3:44:53 PM UTC-8, Chris Behm wrote: Just mount the blade antenna by the front lug only, leave it loose a bit. Cut a slight smile slot for the coax, use a bit of grease, and,voila! Now your blade style antenna can feather with the wind, netting you the least amount of drag possible. ;-) Why not mount it on the side of the fuselage and use it as an angle of attack sensor as well? And get Boeing to design you a MCAS so you are always safe from stall.
|
| Thread Tools | |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| PowerFlarm Antenna Locations on Carbon Fuselage | Dan Marotta | Soaring | 9 | August 15th 19 08:38 PM |
| ASW27 Trasponder Antenna Installation Inside Fuselage. | Paul Birkett | Soaring | 45 | January 8th 18 03:31 AM |
| ASW-24 - Transponder Cable Routing in Fuselage | [email protected] | Soaring | 6 | February 3rd 15 05:00 PM |
| Transponder Antenna Placement Fuselage Bottom - Minimize Damage?Exact Location | WaltWX[_2_] | Soaring | 9 | January 19th 15 11:00 PM |
| Transponder and antenna | Paolo | Soaring | 1 | March 6th 04 03:32 AM |
Hybrid Mode
