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NNTP-Posting-Date: Thu, 18 Jul 2024 18:39:34 +0000
From: john larkin <jlarkin_highland_tech>
Newsgroups: sci.electronics.design
Subject: Re: Solar powered electrostatic motor drone ??
Date: Thu, 18 Jul 2024 11:39:34 -0700
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On Thu, 18 Jul 2024 19:21:23 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:

>On 7/18/24 18:42, Liz Tuddenham wrote:
>> Jeroen Belleman <jeroen@nospam.please> wrote:
>> 
>>> On 7/18/24 07:46, Jan Panteltje wrote:
>>>> Researchers build ultralight drone that flies with onboard solar Bizarre
>>>> design uses a solar-powered motor that's optimized for weight.
>>>> https://arstechnica.com/science/2024/07/researchers-build-ultralight-dro
>>>> ne-that-flies-with-onboard-solar/
>>>>
>>>> Well, ehh, unlimited flight time if any sun..
>>>> Looks funny.
>>>> 4.5V to 9 kV power converter...
>>>
>>> I wonder if electrostatic motors would have been as practical
>>> as electromagnetic motors if the history of motor design had
>>> taken a different turn a century or two ago.
>> 
>> I think Philips dabbled with them many decades ago.  A report will be
>> somewhere in the Philips Technical Review.
>> 
>> 
>
>Thanks for that hint. The Philips Technical Review is a treasure
>trove of interesting stuff.
>
>I found a paper by B. Bollée on electrostatic motors:
><https://pearl-hifi.com/06_Lit_Archive/02_PEARL_Arch/Vol_16/Sec_53/Philips_Tech_Review/PTechReview-30-1969-178.pdf>.
>
>Jeroen Belleman
>

I wonder how many orders of magnitude an electrostatic motor is worse
than a magnetic motor, in some criterion like power per volume or
power per dollar. 6 maybe?