- Holder
- Wright Aeronautical Division Curtiss-Wright Corporation
- Revision
- 0
- Status
- Current
- Product
- Engine
- Models
- 5
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 5
| Model | Also known as | Note |
|---|---|---|
| Whirlwind R-975B | ||
| Whirlwind R-975 | ||
| Whirlwind R-975D | ||
| Whirlwind R-975A | ||
| Whirlwind R-975E |
Airworthiness directives · 0
ADs whose products are models on this data sheet, matched by model and maker.
No ADs matched this data sheet’s models
STCs approved under this data sheet · 1
PMA parts · 6
Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this data sheet’s models, so check the FAA record before relying on it. Newest first.
What the data sheet saysOCR
This is OCR from the scanned FAA data sheet. OCR can misread letters and numbers.
MODELS: Wright Whirlwind R-975, A, B. D. E
1.C. NOMEER: AIC 21
Model - Whirlwind R-975E
туре - 9RA Direct drive
rating:
Maximum continuous,
Of. Ipm, at S.L.
Fressure altitude 330-2000-S.L.
Take-off (one minute) .
hp. rpm, at full
throttle 330-2000
Fuel (minimum octane
aviation gasoline) 73
Fore and stroke, in. 5.0 × 5.5
[isplacement, cu. in. 972
Compression ratio 5.1:1
635
Supercharging
(imfeller gear ratio)
Carturetion Stromberg NA-F9 or NA-R9A carburetor with 2-7/16 in. verturi
Scintilla VAG-9DF or SR-9R magnetos
Certification tasis Approved Type Certificate No.
NOTE 1. Includes R-975, R-975A, R-975B and R-975D engines.
NCIE 2. Weight (dry) includes carburetor air heater and cleaner.
KOTE 3. APproval expired 7/12/37 No engines of these models manufactured after this date or with serial numbers
bove 13122 (except A15053) eligitle for use in certificated aircraft
NOTE 4. Maximum permissible cylinder head, barrel and oil inlet temperatures, 500 degrees F., 325 degrees F..
and 200 degrees F.. respectively.