Calculator


Drag Coefficient of Parachute in Turbulent Forebody Wake

The drag coefficient of high-speed decelerator in turbulent forebody wake can be predicted by the Calculator. The remote program EXPRESS is applied in this case. Thus, this task is solved by our server. For this purpose, fill in forms below (data, your e-mail address and name) and submit. Then e-mail with form will be received by the server, processed and sent with the results back to your e-mail box. We need your e-mail address because these products are e-mail based. If you have concerns about giving out your e-mail address, please read our statement of integrity. The Calculator will run JavaScripts. Be sure your browser supports this language, otherwise install Netscape Navigator (recommended) or Internet Explorer.


Data Form


Specific Heatings Ratio (Cp/Cv)=
Mach Number (1<M<6)=
ForeBody-Canopy Distance (m) =
ForeBody (FB) Diamemter (m) =
Reynolds Number (based on FB Diam.) =
Forebody Drag coefficient for a chosen Mach Number =

Type of wake: 2-Dimensional plane2-Dimensional axisymmetric
(first option - for long busters transverse to flow)
Parachute Canopy Total Area (sq.m, including holes) =
Parachute Canopy Referenced Area (sq.m)=
Parachute Canopy Mouth (inlet) Area (sq.m)=
Reefing Coefficient
(for axisymmetric canopies only)=
Inlet Section Area Reduced due to Pulsation (in %: 100% for unpulsing) =
Aerodynamic Blockage of the Canopy Inlet by Suspension Lines (in %, <20%) =

Porosity of the Canopy: Yes No
(next 3 values ignored if "No", leave them as they are)
Porosity Coefficient (<0.2) =
Porosity in Polar Area (<0.2)=
Porosity in Lateral Area(<0.1) =


The result must be sent in the following form (check the boxes):
Drag coefficient for assigned Mach and Distance
Graph: Drag vs. Mach (Const. Distance) (*.gif file)
Table: Drag vs. Mach (Const. Distance) (*.txt file)
Graph: Drag vs. Distance (Const. Mach) (*.gif file)
Table: Drag vs. Distance (Const. Mach) (*.txt file)
Data file with results (for PostProcessor)


E-mail form:
---------------
Subject
Your Name
Your E-mail Address
------------
Message
Add any information, suggestions, comments. Describe the task in words if data above are not comprehensive. Indicate the range/list of parameters if serial computing needed.

PRICE:
check appropriate boxes to accept
One task = $120
Test task (default data form). Try it to see how our service works =FREE
Discount for serial computing and optimization = 15%
Pre-Pocessor EXPRESS = FREE
Post-Processor EXPRESS = FREE
Full featured package EXPRESS = $4.200
The bill will be e-mailed with the results.
Form of payment: wire transfer.



Receipt of your order and timing of work will be confirmed via e-mail


Return to Calculator Main Page