I know some of you have experience with this.
I was asked to fly the skydiving guys 182's the other day. I wasn't spraying so I figured I'd burn some of they're gas instead of mine. Always looking for an excuse to be in the air. Forgot how nice and cool it is up there for a while. Nice break from our nearly 100 deg days already.
Anyway. Here's the question.
What's the best way to get down quick without shock cooling? I pretty much slipped it all the way down at about 2.5-3k a min descent. Waste of effort? I RARERLY ever go high enough to worry about this. Or if I do it's a gradual descent. But I know you guys want the motor turning as little time as possible while taking care of the motor as much as possible. I just figured slipping with some power on would help keep motor warm and still get down fast. They usually dive down near red line and don't get down as fast as I did with a lot less air rushing over the hot motor.
Just curious. Thanks guys. Have a great one

Power should be down around 15 inches when they get out . Keep about that much power all the way down and shock cooling should not be a problem . Cowl flaps closed .It is usually 1/2 hr to go up for a load and get back down in the 182.You can shave some time off that but not much in my experience.If the plane is equipped with a 6 probe egt /cht it will be much easier to see how fast it's cooling off..... I find flying jumpers to be pretty fun . Lots of takeoffs and landings , you never know what you are going to get on each load and you get to fly it like you stole it!

Back in the sixties when I was flying skydivers in 180/182/and the Cherokee six we usually pulled power back a little at a time and as the engine cooled off, pulled more. Always came down in a steep bank. I sometimes got 18 loads a day as did our other pilots and in 3 years we never had a problem with the TCM engines.
Ron

I arrive at the target altitude 1 min prior to the cut and exit point. At the 1 min prior point I reduce RPM to bottom of the green and MP as required to maintain the target altitude and 80 mph airspeed. Skydivers or you can open the door and they spot. At the Cut, Cowl flaps closed (if you have them) MP until 0 thrust (RPMs drop a little), airspeed as required to maintain a level platform for the jumpers. All jumpers away, Do not drop the nose yet and close the door. Increase MP to bottom of green, verify cowl flaps closed, then lower the nose to top of green. Skid or slip is ok but switch from both tanks to the high wing tank, check oil pressure. Keep reducing MP to bottom of green and smooth air increase airspeed to top of yellow. Older 182s only have fuel pickups at the back of the tank so the steep nose down descent can cause starvation if you dont keep extra fuel for just this attitude. I do not exceed 60 deg per minute cooling rate using this procedure even without cowl flaps.

Prior to green light, prop back to bottom of green arch, cowl flaps closed, MP to bottom of green arch, mixture to maintain target EGT.

Jumpers away

Pitch for just shy of VNE. keep MP at bottom of green arch, Keep mixture at target EGT, thus keeping the CHT from dropping more then 1 degree every 2 seconds.

I'd come in on a base, take power out for a decel turn to final slowing me in to VFE, flaps down, prop forward, slip if needed and grease it.

Jumper's away and throttle to 15" deploy the speed brakes. About 165 buries the vsi past 4000' min. 56 182 with Precise Flight speed brakes. Always beat the tandems down.