Flight Log - 2013-08-04 - Rich DeAngelis's X-15

 

T' X-15: This is a "Sport-Scale" (not true scale) model o' t' famous X-15 rocket-powered research plane. Ahoy! This particular kit appears t' be newer than other Quest X-15 kits described here: It is a few inches longer, and a recommendation by Quest t' only use t' A8-3 or A6 motors. (Mine is definitely too heavy t' fly on an A8). Avast! I chose t' paint me particular model gloss blue (not t' historically accurate black).

 

My kit came out pretty heavy as I used a full-sized can of Rustoleum 2X paint tryin' t' get a smooth, arrr, glossy finish. Apparently light coats o' this paint leave t' finish in somethin' like an orange-peel texture, matey, cool but nay good for low drag. I discovered heavy, thick coats that would run with normal paints made for a smoother, glossy finish. But by then, thar was so much primer and paint on this model that it almost doubled t' weight o' this kit. In MHO, Rustoleum 2X (from Home Depot) sucks for flyin' models. Aye aye! Blimey! I wish I would have used t' ridiculously expensive yet lighter Testors stuff at $5 for a tiny 3-oz. can.

T' X-15 finally got a payload section addition. Ya scallywag! This adds another 3 inches t' t' rockets overall length. Avast, me proud beauty! This will hold t' Altimeter Two, arrr, which no longer is at risk o' ejection shock damage or loss if t' clip fails.  T' added bulkhead, painted payload tube and paddin' only adds an additional 13.6 grams o' weight t' this model.

She flies well and is nay affected by t' wind much, matey, though I wish I could get her t' venture a little closer t' t' clouds.  Actual measurements with an altimeter on board shows this model can go much higher than I estimated, me bucko, with a C6-3 it reached 437 feet, me bucko, and traveled at 89 mph. Well, blow me down! Blimey! That's enough t' have it fly higher than the Great Pyramid o' Giza, shiver me timbers, now that it has eroded about 25 feet.

Flight Date: 2013-08-04
Rocket Name: X-15
Kit Name: Quest - X-15 {Kit} (2014)
Flyer's Name: Rich DeAngelis
Motors: B6-4
Expected Altitude: 149 Feet
Wind Speed: 10.00 mph
Launch Site: Exton Park, Exton PA
Actual Altitude: 99 Feet

I was tryin' out a new field today.  O' all t' rockets that still needed a test flight, t' X-15 be predicted t' be t' lowest.  I wanted t' try a lower-power test flight with t' new altimeter in t' nosecone.  Though it was windy, I wasn’t worried about t' X-15 since it is a wind-fighter and I expected it t' go less than 150 feet up.

T' motor lit fine, and t' rocket blasted off its 4-foot launch rod. It peaked its acceleration at 8 Gs while averagin' 3 Gs for t' 8/10 second burn.  It began t' turn into t' stiff breeze about 30 degrees or so.

T' rocket reached a speed o' 50 mph and then slowed as it coasted for 2.1 seconds where it then turned completely into t' wind. T' apogee o' this flight was 99 feet. After apogee it delayed for another 1.2 seconds while droppin' 17 feet.

T' ejection fired a bit early after only a 3.3 second delay.  At 82 feet up t' parachute opened almost immediately, and t' rocket descended at 9 mph t' a soft grass landing.  T' total flight time was only 10 seconds.

Although this flight was fine, it demonstrated that it be too windy t' fly other, higher-reachin' flights today, so all future missions were scrubbed for t' day.

StageMotor(s)
1Estes B6-4

 

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