MATTS875 Posted August 15, 2011 Report Posted August 15, 2011 I know that this is not to make a practice of it, but I notice that the airspeed indicator has a yellow arc that starts around 140kts.Why is that? I guess that is a mooney question but you all seem to have a lot of information on topics like this.Seems to be a little low.so tell me how you all fly your m20c and m20e's
Parker_Woodruff Posted August 15, 2011 Report Posted August 15, 2011 The shortbody Mooneys had lower airspeeds where the yellow arc became an issue. Look at the POH...you'll see that Mooney doesn't have a problem with this in cruise and flight in the yellow arc can be a regular occurence below 10,000' or so.
Shadrach Posted August 16, 2011 Report Posted August 16, 2011 I am not overly concerned about cruising in the yellow arc and I would be less so in an early E... The yellow arc on my 67 F starts at 154kts which is easily attainable in descent or at times when down low, on cool, low DA days. So, the later pre Js had a bump in yellow arc and red line over the earlier models and the J model had yet another upward bump. AFAIK, there were no structual changes to any of those airframes. I'm not advocating that anyone ignore the the POH reccomendations; I'm merely suggesteing that there are significant margins built into all of the metal wing models and even moreso into some of the older, more conservatively limited birds...
flight2000 Posted August 16, 2011 Report Posted August 16, 2011 I have no issues flying it in the yellow. It's closer to the green arc up at altitude (6-10K) anyway, but down low it is way in the yellow at times. Just slow down if you start getting into turbulence, even if that's a little hard to do. Anything above a light chop and I'll pull the MP back to slow the plane into the green. Brian
rbridges Posted August 16, 2011 Report Posted August 16, 2011 is there any reason the short body had a slower yellow arc? Being relatively new, I get a little uptight when I hit any roughness when it's not in the green. But as the OP stated, it's not hard to be out of the green.
Shadrach Posted August 16, 2011 Report Posted August 16, 2011 Quote: rbridges is there any reason the short body had a slower yellow arc? Being relatively new, I get a little uptight when I hit any roughness when it's not in the green. But as the OP stated, it's not hard to be out of the green.
scottfromiowa Posted August 16, 2011 Report Posted August 16, 2011 I am not at all concerned about the yellow arc for reasons Ross discussed. I slow down if in descent or down low and I start getting into turbulence. More about comfort than concern for airframe. I respect the VNE in descent, but like Ross said the airframe (all metal) was newer in 1966. The yellow arc was modified with time and experience. Bottom line our Mooney's are structurally very sound. I'm a little color blind to yellow.
Hank Posted August 16, 2011 Report Posted August 16, 2011 Quote: rbridges is there any reason the short body had a slower yellow arc?
Shadrach Posted August 17, 2011 Report Posted August 17, 2011 Quote: Hank I thought it had to do with control surface flutter, and was address sometime in the late 60's. Doesn't matter to me--my 1970 model has yellow from 175-200 mph, and since it's a C, I'm never there except in a descent and then barely. 165-170 MPH is typical, unless I've been given a chop-and-drop approach.
sleepingsquirrel Posted August 17, 2011 Report Posted August 17, 2011 So is it possible that a Mooney could break the sound barrier?
Shadrach Posted August 17, 2011 Report Posted August 17, 2011 Maybe...You'd need to rip the wings off first.
sleepingsquirrel Posted August 18, 2011 Report Posted August 18, 2011 At least there would be no post crash fire, and the only evidence of exceeding the sound barrier would be scorch marks from friction. Oh, the remaining wreckage could be transported in an overnight bag!
Hank Posted August 18, 2011 Report Posted August 18, 2011 Quote: sleepingsquirrel So is it possible that a Mooney could break the sound barrier?
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