Too Late for Boxing Day*, Ehang Delivers the Goods

Dean Sigler Batteries, Electric Powerplants, Sky Taxis, Sustainable Aviation 0 Comments

Broadcast live on December 24, this demonstration of the eHang 184 is, interestingly, an English-language presentation, with a lot of English names floating about. Someone named Mike shows off the Ehang 184 in this Christmas-related special.  His friend Miranda snugs herself into the compact passenger compartment, tries on the safety harnesses, and deplanes before committing aviation.  The video is a sales pitch for the drone manufacturer – actually more of a long wind-up before a pitch into the air.  Mike takes us through a tutorial on the craft, which seats one passenger and has eight propellers that are mounted on four arms (one-eight-four, or 184). The rather ungainly entrance and exit of the petite young woman suggests possible improvements eHang’s designers …

Avoiding Propeller Strikes on Electric Aircraft

Dean Sigler Electric Powerplants, GFC, Sustainable Aviation 0 Comments

At last year’s Electric Aircraft Symposium, Ron Gremban, developer of the Prius plug-in hybrid, shared several questions about promoting safety in electric aircraft.  One aspect that provoked deep thought was that of safety for those working around an electric airplane, whose propeller could start quietly and possibly strike an unaware bystander.  During the Green Flight Challenge, it was noteworthy that unlike their gasoline-powered counterparts which idled while awaiting takeoff, the Pipistrel G4 and e-Genius awaited their turn to launch with propellers at rest, only spinning when commanded – and very quietly at that. The question of avoiding prop strikes found at least one answer at EAS VII.  Karl Kaser demonstrated, in model form, his ePropeller Safety Device (eSD), noting “the …