3 ms·

Interesting, that this form-factor was popularized by DIY builders. First one was dutch-built, sponsored by Red Bull after prototyping stage, to film Verstappen

Interesting, that this form-factor was popularized by DIY builders. First one was dutch-built, sponsored by Red Bull after prototyping stage, to film Verstappen's full F1 lap (so semi-DIY, so to say), but then record was taken back and forth between two DIY builders — Ben Biggs in Australia and Luke Maximo and his father Latest record by Ben Biggs was 626kph (389mph). Latest record by Luke Maximo was 655kph (408mph).

SurprisedTiger 3mo ago
You can only go so fast with propellers, as the propeller tips approach speed of sound and then life gets complicated.
- sandworm101 3mo ago
  And old assumption, widely held until the soviet Bear bombers shattered the misconception that propellers must remain subsonic. https://en.wikipedia.org/wiki/Tupolev_Tu-95 https://en.wikipedia.org/wiki/Tupolev_Tu-95
  - ceejayoz 3mo ago
    Or the appropriately named Thunderscreech. https://en.wikipedia.org/wiki/Republic_XF-84H_Thunderscreech https://en.wikipedia.org/wiki/Republic_XF-84H_Thunderscreech
    - sandworm101 3mo ago
      Ya, three years after the bear. Call it an experimental fighter, but it was sputnik-style catchup. It was US designers saying WTF is that? They needed to figure out what the bear was capable of, so they needed to study supersonic propellers asagdp.
- blacklion 3mo ago
  Yes, it is why last iteration by Luke Maximo & Father used trimmed-down propellers rotating really fast :-)
- tim333 3mo ago
  Fans are pretty much like propellers and the F15 uses a turbofan and goes supersonic. It works by inlets and exhaust nozzles that slow the air the speed it up again. The only reason that might not work on an electric drone with fans and nozzles is not enough power.
- panick21_ 3mo ago
  They should look at Prantle Wing (also applies to propellers) to get more efficiency out of the design.
B1FF_PSUVM 3mo ago
> this form-factor "It must be pointy". The photo is so murky you only notice the shiny propeller cones.
- blacklion 3mo ago
  Rocket-like, yes. Like illustration from old "Amazing Stories" or other "pulp" magazine of golden age of SciFi :)

SurprisedTiger 3mo ago

You can only go so fast with propellers, as the propeller tips approach speed of sound and then life gets complicated.

sandworm101 3mo ago
And old assumption, widely held until the soviet Bear bombers shattered the misconception that propellers must remain subsonic. https://en.wikipedia.org/wiki/Tupolev_Tu-95 https://en.wikipedia.org/wiki/Tupolev_Tu-95
- ceejayoz 3mo ago
  Or the appropriately named Thunderscreech. https://en.wikipedia.org/wiki/Republic_XF-84H_Thunderscreech https://en.wikipedia.org/wiki/Republic_XF-84H_Thunderscreech
  - sandworm101 3mo ago
    Ya, three years after the bear. Call it an experimental fighter, but it was sputnik-style catchup. It was US designers saying WTF is that? They needed to figure out what the bear was capable of, so they needed to study supersonic propellers asagdp.
blacklion 3mo ago
Yes, it is why last iteration by Luke Maximo & Father used trimmed-down propellers rotating really fast :-)
tim333 3mo ago
Fans are pretty much like propellers and the F15 uses a turbofan and goes supersonic. It works by inlets and exhaust nozzles that slow the air the speed it up again. The only reason that might not work on an electric drone with fans and nozzles is not enough power.
panick21_ 3mo ago
They should look at Prantle Wing (also applies to propellers) to get more efficiency out of the design.

B1FF_PSUVM 3mo ago

> this form-factor "It must be pointy". The photo is so murky you only notice the shiny propeller cones.

blacklion 3mo ago
Rocket-like, yes. Like illustration from old "Amazing Stories" or other "pulp" magazine of golden age of SciFi :)