Jump to content

Archived

This topic is now archived and is closed to further replies.

realpilotsimpilot

J41 Airmanship question

Recommended Posts

I am consistently way too fast on my approaches with the J41. I suspect it is a variant of the old chestnut that the bird can either "slow down or go down", but not both, at the same time. So, here's the typical scenario: I'm flying along at about 170 being vectored for the approach, I get it down to 150, as I'm vecored onto final, and then I bring it back to idle and drop the last bit of flaps and gear and head down the localizer. Even at landing configuration, I can't get it down below about 130 on a standard glide slope. Give that the VREF is usually in the 115-125 range, this is annoying me. So, any tips would be much appreciated. I suppose I could slow to VREF before intercepting the glide slope, but something tells me that a lengthy approach at 120ish would be highly irritating to controllers at a large, busy airport.


PMDGAirbus.gif

Doug Orvis

PP-ASEL-IA (USA), Based at KHEF

 

Picture courtesy of Kyle Rodgers

Share this post


Link to post

You really need to slow down close to VREF before hand , the J41 with it's geared drive has a constant 20% (or so) torque it's not so easy to slow down during decent. Though I don't remember really having much of a problem when I have flown it. (back in the MD-11 seat lately)


Jay Vorkapic

 

pmdg_trijet.jpg

Share this post


Link to post

Start you glideslope descent near your target approach speed, which means you have to get below 150 earlier than you are doing. The trick is when ATC asks you to keep your speed up as long as possible, I can keep 140kts in the C414 until 1 mile final but the JS41 needs to 'level off' to bleed the speed. It's tricky.


Dan Downs KCRP

Share this post


Link to post
Start you glideslope descent near your target approach speed, which means you have to get below 150 earlier than you are doing. The trick is when ATC asks you to keep your speed up as long as possible, I can keep 140kts in the C414 until 1 mile final but the JS41 needs to 'level off' to bleed the speed. It's tricky.
Thanks. That's exactly the kind of issue I'm sort of working with here. Since the FS ATC doesn't give speed restrictions or instructions, I sort of operate that I'm on just such an instruction until about the FAF. Usually by then I'm centered on the needles on an approach, so leveling off seems counter-intuitive. I guess what through me was that usually in every plane I've ever flown, real and sim, when you drop the gear, your speed takes a decent hit. Not so much here. Interesting bird, this geared TP.

PMDGAirbus.gif

Doug Orvis

PP-ASEL-IA (USA), Based at KHEF

 

Picture courtesy of Kyle Rodgers

Share this post


Link to post
I am consistently way too fast on my approaches with the J41. I suspect it is a variant of the old chestnut that the bird can either "slow down or go down", but not both, at the same time. So, here's the typical scenario: I'm flying along at about 170 being vectored for the approach, I get it down to 150, as I'm vecored onto final, and then I bring it back to idle and drop the last bit of flaps and gear and head down the localizer. Even at landing configuration, I can't get it down below about 130 on a standard glide slope. Give that the VREF is usually in the 115-125 range, this is annoying me. So, any tips would be much appreciated. I suppose I could slow to VREF before intercepting the glide slope, but something tells me that a lengthy approach at 120ish would be highly irritating to controllers at a large, busy airport.
Something you could try is to plan you approach to be at 160 instead of 170 and delay Flaps 15 until after you are vectored to final. They should get you from 160 to 145 easily enough to intercept GS and you will still have Flaps 25 and gear to slow you down to VREF.

Paul Smith.

Share this post


Link to post
  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    34%
    $8,560.00 of $25,000.00 Donate Now
×
×
  • Create New...