MH 32 airfoil — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/mh32-airfoil/  (sheet CC BY 4.0)
Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Catalog version: 2026-10-20

Sizes: see table below
- Martin Hepperle designed the MH 32 as a flapped airfoil for F3B and F3E models, intended to run negative flap for speed (MH-AeroTools).
- UIUC tests at Re 200,000-300,000 matched predictions for the upper laminar bucket; at Re above 100,000 drag rises below CL about 0.25, and Stuttgart tests extended useful range below zero lift with flap (MH-AeroTools).
- It remains a reference section: Model Aviation's soaring column compared newer F3J airfoils against the MH32 and SD7037 at Re 100k.

parameter  value or range  source
Design use  flapped F3B / F3E  MH-AeroTools
UIUC test Re  200,000 and 300,000  MH-AeroTools
Stuttgart (IAG) test Re  100,000 and 200,000; flap -3, 0, 5, 10 deg  MH-AeroTools
Lower bucket limit (Re > 1e5)  CL about 0.25  MH-AeroTools
LE geometry sensitivity  0.25% chord deviation shifted bucket ~0.1-0.2 CL  MH-AeroTools
Coordinates source  MH-AeroTools airfoil pages  MH-AeroTools

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- MH-AeroTools (M. Hepperle): MH 32: Some Wind Tunnel Results — web — Publisher's page; dimensions are facts — https://mh-aerotools.de/airfoils/mh32exp.htm
- Model Aviation (AMA): Radio Control Soaring column, July 2002 — web — Publisher's page; dimensions are facts — https://library.modelaviation.com/article/rc-aerobatics-25

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=mh32-airfoil