propeller design
questionnaire
propeller manufacture


Please complete the questionnaire below. According to your details given, we will send you a quotation for a most suitable propeller. Of course, this offer is not binding for you at all.


Questionnaire

AIRCRAFT

Type: MTOW: [kg]

Manufacturer:

Takeoff distance over 50ft obstacle: D15 = []
Rate of climb (ISA/MSL): R/C = []
Speed for best ROC VY = []
Max.horizontal speed with max. cont. power: VH = []
Max. structural cruising speed: VNO = []
Never exceed speed VNE = []

Special design points:

Condition h
[ft/m]		 Temp
[ºC/F]		 P
[kW/hp]		 rpm V
[kts/mph]		 T
[N/lbs]
Static
Climb
Cruise

Critical condition: climbcompromise cruise

Cowling sections:
Please enclose cowling cross section drawing if available otherwise use the following table

Distance from flange
[m/inch]
Cross section area
[m²/ft²]

In the case of an unsymmetrical propeller inflow please enclose inflow speed distribution.

Spinner

Spinner length:
L = [mm/inch]

Spinner diameter:
D = [mm/inch]

Spinner interface angle:
A = [ º ]

Distance Flange/Cowling
F = [mm/inch]

Engine

Type: Manuf.:

Max. takeoff: P = []n = [rpm]
Max. continuous: P = []n = [rpm]

Gear box ratio:
(Please enclose corrected power/rpm/altitute - data if nonstandard engine)

Flange connection: Standard(encl. spec.) Drawing enclosed Free

Propeller

Max. diameter: []No. of blades:

right hand left hand Right hand rotation if propeller turns
pusher tractor clockwise in flight direction
fixed pitch constant speed ground adjustable adjustable in flight
reversefeathering

Already tested propellers

Noise regulation to be considered acc. to
Comments

Address
Company:
Name:
Street:
City:
ZIP code:
State:
Country:
Phone:
Fax:
eMail:
Internet:

HOFFMANN PROPELLER GmbH & Co KG Tel: +49-(0)8031-1878-0, Fax: +49-(0)8031-1878-78