Mignet HM.250 Light Aircraft or Project ?

[hesham]

Hi,


the Mignet HM.250 was three seat light aircraft,appeared in 1946 but I don't know
if it was built or not.


http://pouguide.org/hm-250

 

[cluttonfred]

I will check my books at home but I believe that the HM.250 was a project only, never built. I have certainly never seen a photo.

 

[hesham]

I will check my books at home but I believe that the HM.250 was a project only, never built. I have certainly never seen a photo.

And I agree with you my dear Cluttonfred.

 

[Maveric]

Do you have a better drawing or 3view? Thanks.

 

[Jemiba]

I think, it would have been quite similar to the HM.210. Started with redrawing
the plan view (side view is still unfinished) and noticed, that there are many
similarities, just compare HM.210-side view and HM.250-plan view. Maybe there
would have been an additional window for the second passenger, but I'm not
sure about this, as that seat is across to the direction of flight.

 

[hesham]

Good attempt my dear Jemiba.

 

[Maveric]

Had the H.M.250 the same technical data like the H.M.210?

 

[cluttonfred]

According comments by "jj@cques" (Jean-Jacques Legrand, I believe) in the French-language discussion group https://fr.groups.yahoo.com/neo/groups/pouguide/, the HM.250 was never built as such but the project morphed into the HM.300 built in Argentina during Mignet's brief sojorn to South America.

"The three-seat HM-250, 'extrapolated' from the one-page plan of the HM-290 (1946) or more precisely from the HM-293 (1947), wih the same firewall angled at 74°, the same elastic suspension, the same tail skid, was not built, doubtless because of Henri Mignet's departure for Argentina. The HM-250 quite simple became the three-seat HM-300 'Annette' built in Argentina! Same 5.30 m length, same 7.60 m span for the front wing and 5.40 m for the rear wing, same common chord of 1.60 m!"

The look of the aircraft changed dramatically with the change from pointy nose for an inline engine to the broad smiling "face" of the HM.300 with it's smiling automotive-style grill over a Continental engine and, in typical waggish Mignet fashion, eyes painted on the cowling to emphasize the effect. ;-)

See also http://www.flightglobal.com/pdfarchive/view/1950/1950%20-%200098.html

 

[Maveric]

Thanks cluttonfred for this very interesting informations. You have also pics and/or 3view-drawing of the H.M.300 "Anette"?

 

[cluttonfred]

Sorry, no 3-views, but here is another, grainy, shot of the single-seat and two-seat models that Mignet developed in Argentina.

 

[Maveric]

Very nice. Thanks again.

 

[Jemiba]

Had the H.M.250 the same technical data like the H.M.210?

What I found (from http://www.airwar.ru/enc/law1/hm210.html and the drawing we have of the
H.M.250), is:

H.M.210 H.M.250
span forward wing 6,00 m 7.60 m
span rear wing m 5,60 m
length 4.90 m 5,30 m

Taking into account the logically higher weight of the 3-seat H.M. 250, a linear enlargement
seems possible to me. The H.M.350 was a similar design, but with higher aspect ratio wings.