Curtiss F9C Sparrowhawk / Model 58
1931
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XF9C-1

Designed to meet a lightweight shipboard fighter requirement - other contenders being the Berliner Joyce XFJ-1 and General Aviation XFA-1 - the XF9C-1 was flown on 12 February 1931. It failed to gain acceptance as a carrier-based aircraft, but its small dimensions commended it for use from the dirigibles Akron and Macon whfch had been designed with internal hangar bays. The XF9C-1 was subsequently fitted with the so-called "skyhook" which engaged the retractable trapeze carried by the dirigibles. Some directional instability resulting from the hook dictated the enlarging of the vertical tail surfaces. A second prototype, the XF9C-2 with single-strut main undercarriage members, was built at Curtiss' expense prior to the placing of a US Navy contract for six F9C-2s which featured a similar tripod undercarriage strut arrangement to that of the XF9C-1. The XF9C-2 was later purchased by the US Navy and modified to F9C-2 standard. The F9C-2 was powered by a 438hp Wright R-975-E3 radial engine and carried an armament of two 7.62mm Browning machine guns. Originally intended to provide fighter protection for the dirigibles, the F9C-2s were used primarily to extend the reconnaissance capabilities of the parent craft. The Macon was lost on 12 February 1935, together with four of the F9C-2s.

3-View 
F9C-2A three-view drawing of F9C-2 (1280 x 996)


Specification 
 WEIGHTS
    Take-off weight1256 kg2769 lb
    Empty weight947 kg2088 lb
 DIMENSIONS
    Wingspan7.75 m25 ft 5 in
    Length6.27 m20 ft 7 in
    Height3.34 m10 ft 11 in
    Wing area16.07 m2172.98 sq ft
 PERFORMANCE
    Max. speed284 km/h176 mph
    Range563 km350 miles

F9C-2

Comments 
Dean Engelhardt, dengelhardt(@)earthlink.net, 25.04.2008

One small correction: the F9C was designed from the start as a hook-on fighter. The story in the archives was planted by the government so as to keep the true nature of the fighter secret. All three planes competing for this contract had the gull upper wing for best visibility of the trapeze. The tailhook was so it could fly the planes to a carrier when lifting gas was contaminated and needing purification.

How do I know? My dad, Lloyd F. Engelhardt, was one of the designers of the airplane along with George Page, Don Ackerman, and Ross Goodlett. For years, Dad had a paper-weight on his desk that turned out to be a portion of a damaged interplane strut on the F9C. It's now on my desk.

Chris Sheppard, CSheppard(@)Shepartstudio.com, 03.06.2007

Great site. Thanks for all the work.
On mentioning the Macon crash which ended this unique aircrafts role, you don't mention the loss of the Akron, April 4, 1933. Being half of the Sparrowhawk experiment, I would think it important. Thanks

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