2ship, both established R-035 75X, not on same radial?
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I’ll bet that both ground tracks are actually on the radial and their noses are pointed into the wind to counter crosswind push - note the displacement of the FPM in the last picture…and he’s also leaning starboard.
Would be nice if the line for the radial could also be included in the first picture…that and weather-dope would probably tell the tale.
Tacview picture shows Patro location, where #2 has flown directly over, as was to be expected as he was tracking the steerpointline. #1 is showing off left, on both tacview as the 2 pilots screenshot HSDs. He flew next to it the whole time, while his CDI was on CRS 035 the entire time. If he would be drifting by wind, he would end up with a CDI deflection to the right.
That’s what I don’t understand. 2 planes, same weather, same airplane, same alignement but different locations. -
Assuming I’m reading the OP’s issue correctly….
Assuming lateral separation between the two planes of about 1500 feet and an average of about 16 miles DME from the TCN, the angular measurement between the two planes is just over 1 degree (1.0173 to be precise). So, both planes are on the same radial, the HSI is correct, the flying is precise, and the trigonometry is correct.
f1
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Assuming I’m reading the OP’s issue correctly….
Assuming lateral separation between the two planes of about 1500 feet and an average of about 16 miles DME from the TCN, the angular measurement between the two planes is just over 1 degree (1.0173 to be precise). So, both planes are on the same radial, the HSI is correct, the flying is precise, and the trigonometry is correct.
f1
So the difference is because one of the two (most likely #1) is flying a mere 1degr off the radial (or for example #1 approx 0.5 degrees left of 035 & #2 approx 0.5 right of 035?
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So the difference is because one of the two (most likely #1) is flying a mere 1degr off the radial (or for example #1 approx 0.5 degrees left of 035 & #2 approx 0.5 right of 035?
I should have stated almost both on the same radial at 1500 ft sep. Is HSI model in BMS precise down to 1 degree increments? What was actual separation between the two planes (large 1500 was assumed)? 500 ft separation and the angular measurement drops to about .33 deg, definitely on the “same” radial then.
f1
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The radial is not a cord over the ground but gets wider the further away your are from the station. So at 10 nautical miles from the station the beam is about 1.000 feet wide (500 ft either left or right from the centerline). At 18 nautical miles as shown in your picture… you do the math
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I should have stated almost both on the same radial at 1500 ft sep. Is HSI model in BMS precise down to 1 degree increments? What was actual separation between the two planes (large 1500 was assumed)? 500 ft separation and the angular measurement drops to about .33 deg, definitely on the “same” radial then.
f1Can’t tell anymore, somehow managed to delete the acme-file :s
The radial is not a cord over the ground but gets wider the further away your are from the station. So at 10 nautical miles from the station the beam is about 1.000 feet wide (500 ft either left or right from the centerline). At 18 nautical miles as shown in your picture… you do the math
Aha, learned something new, thx!
If it was in a manual, or Red Dogs Chart tutorial, I’m fully expecting to receive a RTFM comment now -
So the difference is because one of the two (most likely #1) is flying a mere 1degr off the radial (or for example #1 approx 0.5 degrees left of 035 & #2 approx 0.5 right of 035?
That’s my guess …. just a little, little bit off (± 0.5 degree) and the difference magnifies by the time you get to ~15 DME.
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Tacview picture shows Patro location, where #2 has flown directly over, as was to be expected as he was tracking the steerpointline. #1 is showing off left, on both tacview as the 2 pilots screenshot HSDs. He flew next to it the whole time, while his CDI was on CRS 035 the entire time. If he would be drifting by wind, he would end up with a CDI deflection to the right.
That’s what I don’t understand. 2 planes, same weather, same airplane, same alignement but different locations.This, and as pointed out elsewhere that the resolution of the TACAN gets flaky - actually as you get closer to the station and not farther from it…is this even modeled in BMS? - means that the over flying jet could actually be not “on top” but slightly off, and it would be more likely that the trailer is “on” the radial. Yes, I agree that both are indicating on the radial…and probably are (or should be) as far as their ground track would indicate wrt the station. How was -2 positioning himself as far as the section formation was being maintained - tight or loose? That could also account.
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How was -2 positioning himself as far as the section formation was being maintained - tight or loose? That could also account.
The were both flying heads down SID until overhead patro, takeoff was 20sec interval
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…curiouser and curiouser…I can’t help thinking that it has something to do with the wind, that your ground tracks are actually correct, and this is a trick of geometry somehow - I believe your instruments and your flying. I’m stumped.