viperdoc(at)mindspring.co
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 Posted: Sun Mar 06, 2011 8:27 am Post subject: Egress from the YAK |
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Josh,
Outstanding post. Everybody talks about roll inverted, pull the lap belt release and fall free. I personally have stated that without pointing out that with given time trim for nose slightly pitch up for inverted flight. Pull your feet back off the rudder pedals. Canopy open, unlock the seatbelt and push hard on the stick to propel yourself free. Otherwise, your fall free of the aircraft may result in a second encounter with the very aircraft you were trying to leave. Think about the direction God's G is pointed. You are both going to be headed in that direction. Physics is physics. You are not slowing down when you exit that aircraft until you pull the D ring. A windmilling prop maybe offering more drag than anticipated as the two objects fall on initially parallel courses.
The Russian translated flight manual devotes 3 pages to Emergency abandon of the airplane by parachute jump in section 5.16.
5.16.1 in all flight cases when the pilot's life is endangered, he must leave the airplane by jumping with the parachute.
The decision to abandon the airplane is taken by the crew--commander.
For the airplane abandon, the crew--commander orders:
1. for the abandon of the airplane which responds to controls
-"prepare the jump" and then "jump".
For the abandon of the airplane which doesn't respond to controls
- "JUMP"
5.16.2 Before the abandon of the airplane which responds to controls the pilot must:
-bring the airplane in horizontal flight:
-close the fire cock and disconnect the magneto, the ignition, the storage battery and the generator
-set the airspeed at 200 Km/h maximum:
-unfasten the belts and the radios station coupling cord:
-take out the feets from the rudder pads and tighten them towards the seat cup:
-open the canopy.
5.16.3 The abandon of the airplane in horizontal flight is operated in the following sequence:
-the pilot catches the left side of the frontal window with the right hand, leaning his left hand against the left board of the cockpit;
-then, the leans forward, raising, and takes out the parachute from the seat cup:
-still inclined, he brings his legs in the seat cup and turn on the left:
-the left hand is aimed towards the upper side of the opened part of the canopy:
-the left knee is laid on the left board of the cockpit, the pilot impels the hands strongly and the right foot and leaves the airplane with the head downwards, over the trailing edge of the wing.
ATTENTION! 1. The pilot from the first cabin leaves the first, then the pilot from the rear cabin.
2. If the airplane is abandoned by jumping over the right board, all actions are similar; symmetrical to that in the case of abandon over the left board.
5.16.3a. Abandoning the airplane which doesn't respond to controls, the pilot will proceed rapidly to:
-the unfastening of the belts and of the earphone cord;
- retracts the legs from the rudder pads and tightens them towards them toward the seat cup;
-opens the canopy:
-leaves the airplane about the trailing edge of the wing' following the sequence indicated at the 5.16.3 paragraph and , taking into account the airplane attitude. (normal or inverted flight, climb, rotation on the right or left) performs the jump.
-in turning, spinning a.s.o , the jump is made outside the rotation side;
-in inverted flight, after unfastening the belts and the headphones coupling, coordinating the opening the canopy, the airplane is abandoned by pushing with the legs in the seat cup.
5.16.4. The abandon of the airplane which is burning, when the height allows, is performed with a delay of the parachute opening ( 3-5 sec. at least).
In the case of rapid abandon of the airplane which is on fire, the following procedure is advisable:
- the pilot unfastens the belts and the headphones;
-opens the canopy;
-reverts the airplane in the inverted configuration;
-pushes the stick strongly and leaves the cabin.
Sorry about the long post. The above is directly from the Russian IPs mouths. So, it appears for rapid egress from a burning airplane 5.16.4 gives guidance. I am assuming "-reverts the airplane in the inverted configuration" means roll inverted after disconnecting the belts, the headphones, and push aggressively on the stick. That will be a bit entertaining with the belts released and the canopy open as you roll inverted at the same time pushing strongly on the stick. "And leaves the cabin..." Hope somebody gets a video of that. If you search You Tube for parachute jumping from the YAK-52 you will see what a firm push on the stick will get you.
Someone with bigger cahounnies than I has already tried it.
Still the mindset to step over the side is made before you reach the "Oh Shit" point. It remains fluid based on the circumstances.
Consider practicing your egress actions before having to actually utilize them though. It will be a confidence builder. Don't particularly like being suspended in the harness in the life support shop flying the parachute sim with the straps pulling up on my groin but you sure learn a lot about making sure the straps are secure before the ladder is taken away! If one of the jewels is caught under the crotch strap, you are probably going to forget about the rest of the egress checklist...after the pull firmly away from the body on the D ring with the jolt of the chute opening...!!!
So if you fly with a chute, make sure it is fitted to you properly before you step to fly and plan to use it if the need arises.
Doc
Sent from my iPad
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