Activity

I love it when it gets to the gibberish level of geek. I fly, therefore, it is what the altimeter tells me.

I’ve missed a bunch of threads and pardon me if you’ve answered this already – but is the key element of difference in the temperature compenstion based on the US SAM -6.5c/KM assumed temperature difference in the first 10 Km…   Read more»

Hello,So would the temperature explain the difference in the data recorded from my most recent flight? There is a 1500 foot difference between the accelerometer and the baro reading. I thought that it was caused from the baro not being…   Read more»

Adrian,Very cool work on the Parrot as well as all your work on the minimum diameter shots.I’ve missed a bunch of threads and pardon me if you’ve answered this already – but is the key element of difference in the…   Read more»

As a matter of club policy, the only acceptable altitudes reported for club record purposes is the direct, unmodified and unprocessed output of a stock, unmodified commercially available altimeter utilizing a barometric sensor (no accelerometer based altimeters) that has also…   Read more»

Scott,Isn’t that like the Bob and Doub Mackenzie metric conversion gig????So Adrian, what is going to be the best way for us to correct for this effect? Should we have an altimeter calibration sigh at each launch or what? It…   Read more»

Some of you may have already seen this topic on TRF or the forums on RP, but I wanted to get this out to more people:A thread on altimeter accuracy on TRF got me doing a little more research into…   Read more»

By the way, the Tripoli record form does ask for ambient air temperature and pad altitude, so if they have that data from every record, then they could correct all of them, at least assuming that the temperature is just…   Read more»

The Parrot does measure chip temperature along with every pressure measurement, but I don’t recommend that for this purpose because the temperature of the board can be way off from ambient. In Chris’s Cirrus Dart last summer if I recall…   Read more»

Very interesting… and I would say a prime motivation for adding an ambient air temperature sensor and data point along with every altitude data point. This certainly makes sense to me. I had long heard of the standard atmosphere model…   Read more»

Interesting info, thanks for taking the time to post it, Adrian.

When life hands you lemons, make lemonade. And when your wife hands you a sandwich baggie full of mint harvested from an overgrown AeroGarden, made mojitos. But don’t expect to be able to write clearly on a techical topic afterwards….   Read more»

Good to know. Somone should probably remove the 7/13 launch from the launch schedule on the web site.

Actually, not trying to screw things up but the Research launch on the 13th has been postponed until the following weekend. We will still be flying on Saturday, the 12th and the Research launch will be the next weekend on…   Read more»

I will be there. Not flying anything big..But flying

Well crud. Guess I will launch everything saturday

Yes, the lay-up and ply orientation was specifically designed around recovery impact. I cured out 8 different test panels today as part of determining the actual thickness of the various different lay-up schedules as well as the different load capabilities.When…   Read more»

I absolutely agree – what I and other amateur composite folks do pales against properly engineered composites. However, were recovery impacts considered in the layup design? I, for one, because I don’t have the engineering expertise necessary to properly design…   Read more»

Have you thought about a layer or two of Kevlar at the ends of the upper airframe?No, not really. I had the chance to visit the place where Art works and it is really amazing. They have the tools to…   Read more»

Doug,Have you thought about a layer or two of Kevlar at the ends of the upper airframe? Far more able to take impact than carbon or fiberglass. Of course you have to cover it with at least one or two…   Read more»