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Special Approach Plates for the U-2? (Read 116 times)
Jun 19th, 2004 at 9:40pm

Gringo6   Offline
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I love YaBB 1G - SP1!

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???
Does the FAA have special approach plates for the U-2 to use ?  I have tried to fly the U-2 and make ILS and VOR approaches, and it just doesn't work. That thing floats like a blimp.

Just wondering.
 
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Reply #1 - Jun 19th, 2004 at 11:53pm

OTTOL   Offline
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Fintas, Kuwait (OKBK)

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"Floating" should have nothing to do with shooting an approach, only the flare and landing. If you're floating on an ILS you should be going missed!
Does the U2 that you are using have spoilers modeled into it ?  If so, use them after the wheels touch down or just before they touch down if the airplane won't touch down. If the airplane won't SLOW down on final, then use them in this case as well.
 

.....so I loaded up the plane and moved to Middle-EEEE..........OIL..that is......
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Reply #2 - Jun 22nd, 2004 at 7:22am

IanK   Offline
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my Harrier?

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The FAA does not certify, unsurprisingly, the U-2 as it is not a civil aircraft.
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/MainFr...

You need the USAF TO...-1 but how to get it!

Read some books on the U-2 from your nearest library. Apparently it was difficult and probably used spoilers and may be a chute?

Update:
from Chris Pocock,"Dragon Lady: The History of the U-2 Spyplane", ISBN 0 906 893 841
Descent procedure:
Do not  reduce rpm except very slowly otherwise the engine will flame out. Do not let the airspeed increase otherwise the tail will come off.
Lower the gear; open the bleed valves as the throttle is reduced to the required power to avoid compressor surge and flameout.
Deploy wing and fuselage drag devices.
The nose gradually pitched down to maintain MN as the AP is in M hold mode.
At lower altitude reduce power to increase rate of descent.
Roll-out from turns requires as much as 30° bank.

Dead-stick Approach
High key point is 3000ft, 100 kn, turn into down wind leg with flaps at 25° and gear down reaching 1500ft and low key point and at 800ft turn into finals.Then extend airbrakes. Cross the threshold at 80 kn and pop the chute. The wings need to be kept level as they fly down to 10 kn.
Max. cross wind for landing is 15 kn except in emergency.
To land in 90° 32 kn gusts, fly with down wind wing low to generate a yaw moment into the wind.
Threshold speed was a function of the weight and flap deflection. It is min of 1.12 Vstall. VT+30kn is the pattern entry speed, VT+20 kn is the down wind speed, VT+10 kn at start of finals to be bleed off down the final approach.
Landing run is well over 2400 ft.

I wonder if anyone reads this Smiley
Ian

« Last Edit: Jun 25th, 2004 at 12:19pm by IanK »  
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