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The Model QH-50E
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PERFORMANCE SUMMARY- QH-50E |
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Take-Off Loading Conditions- ASW Attack, 2 qty, MK-44 Torpedoes, Full Reg. Fuel (no aux fuel) |
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First Flight of QH-50E was on September 11, 1969 |
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TAKE-OFF WEIGHT | 2288 LBS. |
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Fuel & Oil weight | 348 LBS. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Empty weight |
993 LBS. |
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Payload (regular) |
947 LBS. |
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Disc Loading (lb/sq. ft.) |
7.29 |
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Max. Speed/altitude |
80 knots/S.L. |
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Cruise Speed at Sea Level to target (no shroud) |
70 knots | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Combat Range | 155 miles | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Hover: (OGE) | 6250 ft. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Hover: (IGE) | 11,500 ft | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vertical Rate of Climb at Sea Level | 1900 fpm | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum rate of climb at Cruise | 1255 fpm |
Serial Number HistoryQH-50E Drone (also known as YQH-50E) |
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Serial Numbers |
Number Produced |
Manufacture Date |
Disposition |
DS-1717 (seen above) | 1 | Originally accepted as a D
model in April 1969
Returned and remanufactured as an E model in August 1969 |
Built under contract N00019-69-C-0361, DS-1717 originally was a QH-50D that was returned to Gyrodyne under a bailment agreement that included DS-1717,18 and 19. Delivered to NATC-Patuxent River, MD for stability and control tests, engine problems caused DS-1717 to be grounded while performing ground vibration tests. The program was cancelled before DS-1717 could be returned to service. It is presently stored in a U.S. Army Warehouse in New Mexico awaiting disposition. |
DS-1718 | 1 | Originally accepted as a D
model in April 1969
Returned and remanufactured as an E model in August 1969 |
DS-1718, after completing preliminary control flights, was returned to Gyrodyne and converted into a two place, manned test bed for the 24' rotor system in which the Allison engine remained installed. Unfortunately, DS-1718 was destroyed in a trucking accident while being transported to California in November 16, 1999. |
DS-1719 | 1 | Originally accepted as a D
model in April 1969
Returned and remanufactured as an E model in August 1969 |
DS-1719, upon acceptance by the Navy, was the more used E model during contractor demonstrations at NATC-Patuxent River, MD. It was used to attain information on the Allison engine installation and validity of its design. Unfortunately, a "hunting" problem would occur when the aircraft was close to the ground as the engine's fuel controller attempted to match the power required to maintain the set altitude the automatic flight control system was trying to maintain through increasing pitch of the rotor hubs. A time lag between when the power was needed and when it was delivered caused the engine systems to search for a balance of power. Gyrodyne attempted to fix the problem but this problem led to the loss of DS-1719 when it crashed while landing in November 1969. At that point the Allison powered YQH-50E development contract was cancelled. |
The name "Gyrodyne" in its stylized form above, is the Trademark of and owned by the Gyrodyne Helicopter Historical Foundation; unauthorized use is PROHIBITED by Federal Law. All Photographs, technical specifications, and content are herein copyrighted and owned exclusively by Gyrodyne Helicopter Historical Foundation, unless otherwise stated. All Rights Reserved ©2013. The Gyrodyne Helicopter Historical Foundation (GHHF) is a private foundation incorporated in the State of Nevada as a Non-profit organization.GHHF is dedicated to the advancement of
the education and preservation of the history of the Ships, the Men and the
Company that built, operated and flew the U.S. Navy's QH-50 Drone Anti-Submarine
Helicopter (DASH) System and to the preservation of the history of the U.S.
Army's past use of DASH.
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