The final flight of the V-2 woth wings
|Simon Chaddock||27/07/2018 11:05:56|
5791 forum posts
I fear yesterday was the end of my A4b (V-2 with wings).
Set up to do its usual VTO it rose as normal to about 20 feet and then the fan disintegrated!
No thrust, little airspeed and pointing straight up the result was inevitable. It toppled over and dived into the ground.
The collected bits.
The bits of Depron at the back are what was 'chewed up' by the disintegrating fan and ejected out the back along with 7 of the 8 blades! The last one was retained "impaled" into the Depron.
Clearly the fan hub burst which is not that surprising as the EDF was not cleared for 4s operation and whacking the throttle fully open from a standstill is likely to be pretty hard on the fan's structure but for a VTO with only aerodynamic stabilisation you have no choice. At 2 years old it is perhaps surprising it lasted as long as it did.
Built only as an experiment to see if a cheap EDF could provide the thrust to lift off an air frame vertically meant it was very light built and delicate but it did achieve the intended result and flew remarkably well. It was never intended as a 'keeper'.
As with my other 'built up' Depron structures all the 'electrics' survived the crash completely undamaged and could be used in something else.
1561 forum posts
Well it was a success over several flights and probably converted the doubters. Great work Simon
|Don Fry||27/07/2018 18:18:10|
4557 forum posts
I'm quite in awe. Bet the launch is interesting.
Into wind, stop torque roll, and let the nose drop for transition?
|McG 6969||27/07/2018 20:37:44|
3408 forum posts
Really feeling sorry for you, Simon.
But then also pretty convinced that you will come up with another 'unbelievable' new experiment.
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