Flight Log for 14 July 2001, 60 Acres Park, Redmond, WA

Warm and sunny, wind variable, 0-5 mph.
Model Flt 
#
Recovery Type Motor Comments
NMP Rocket Glider
1
Rocket glider
Apogee 1/4A2-2 My first Rocket Glider design since Spyglass 1, this was a test flight leading up to the Section contest on July 28.  Unfortunately, not all of my designs work as well as Spyglass 1 did -- in this case, the rocket looped as soon as thrust ended, ejected in a near vertical climb, and looped again on the impetus of the ejection.  It then glided quite nicely (after many hand tosses).  The design looks like a small hand launch glider with a pod up front -- a conventional front engine boost glider, except that the pod is vented and the motor retained against ejection.  The surfaces were set up in a way that should have led to a right roll at high speed, and a left turn in glide.  Didn't work.  I'm not sure why.
NMP Rocket Glider
2
Rocket glider
Apogee 1/4A2-2
Second flight, very much like the first despite addition of a drag tab under the left wing, and more rudder.  No doubt about it, this should have been rolling like a rifle bullet at high speed, then opening out into the left hand glide.  Nope, another loop.
NMP Rocket Glider
3
Rocket glider
Apogee 1/4A2-2
Third flight, very much like the first two.  The glide is decent -- I was getting over fifteen seconds with the loop and glide proper starting at something like 20 feet altitude; I was just concerned that the loop would lead to a DQ when what I wanted was to shoot it up high and let it come down in a gentle circle.

After this flight, I broke the tail boom in a test glide, and an attempt at a field repair with thin CA glue left the boom with about 20 degrees decalage -- so, back to the drawing board.  I'll try a sliding motor pod for the next iteration, with the same wing and tail.



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