Warren B. Musselman

Don’t avoid checking out Tripoli in preference to NAR… There are lots of larger motors going on as NCR is largely a high power club except for the kids… Feel free to email me or anyone else and folks will…   Read more»

That’s going to be one thing that sets your altimeters apart from the run of the mill Adrian. At this point I’m past wanting to fly your altimeter with another altimeter – I want to fly it with a GPS…   Read more»

The only point I would make is that as far as I know, no manufacturer does individual unit calibration on altimeters. I’ve spoken to one manufacturer who I know pretty well on a face to face basis and I know…   Read more»

The other post. Both by Ken Biba.I posted this in another discussion relating to competition measurement of altitude – particularly for TRA records that are now being set above 40k’ MSL. It argues that hobby barometric altimeter systems currently available…   Read more»

I need a 3″ (75mm) L motor somewhere around 20″ long…. anybody have a recommendation?Warren

I don’t know the full story, just have seen posts specifically pointing out Robert’s altimeters as being unsuitable for any Tripoli altitudes due to a lack of temp compensation. I have been under the impression that Missileworks and Perfectflight altimeters…   Read more»

Adrian, I gladly defer to your knowledge and experience on this – I have no problem being taken to task – my last serious look at baro sensors was 5 or so years ago and parts weren’t nearly as good…   Read more»

I’ve long felt that none of the commercial altimeters on the market are either accurate or precise. This is largely a matter of the economics of the marketplace to be sure. As I see it, there are several problems.1 -…   Read more»

Given Tom’s history of rejecting altitude claims, I’m waiting to see what happens when someone claims a “serious” record on a Parrot. (J or above). There have been a lot of rejections on the basis of electronics and as far…   Read more»

Joe and Art both regularly monitor this site so I’m sure they’ll touch base. I do know that Joe will be out of town from mid-July through mid-August so someone else will need to step up to the plate in…   Read more»

Isn’t there a way to adjust the SAM for ambient temperature? I would be very surprised if there weren’t.As for waiver, the Atlas site will never exceed 12K due to the proximity of Hwy 14 and Briggsdale. The North Site…   Read more»

I don’t know about “wrangling” anything. I fully support the idea of temperature compensation for altimeters but I and the other folks who have been involved in setting the altitude record rules have always been firm in the belief that…   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»

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»

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»

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»

After seeing the parts in the back of Art’s car at the February launch, I knew we were in for something special – between Art and Dougs skills, there are two of the most experienced large rocket builders in the…   Read more»

We could certainly post a link on the home page… but I think Joe might die of embarrassment.Warren

I might be very interested in this bird Mike. I’ve been wanting to do a big EX Hybrid, though it was somewhere down the road in my plans. What remains to be done to complete the bird? What about GSE…   Read more»

Mike,A fully appropriate use of the forums – fear not. I will admit, I’m definitely saddened to see you stepping back from the hobby. On the other hand, I do know how other hobbies can distract one from rocketry -…   Read more»