Naval Expeditionary Logistics Enabling Operational Maneuver from the Sea (1999) / Chapter Skim
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D Logistics Productivity of Aircraft
D Logistics Productivity of Aircraft
Pages 76-87
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From page 76... ...
Within the concepts of maneuver warfare, this is a dynamic process that responds to the uncertainties of combat with movement and directed fire on the threat, and continues until the threat has been overcome. The commander must use available transportation assets to make initial deployments of troop units, fighting vehicles, support vehicles, and supplies, and then readjust the deployments to defeat the threat while, at the same time, moving replacements and resupply materiel into position.
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From page 77... ...
Configured with a fuel-only maximum load, the aircraft can fly to the so-called "ferry range." The maximum round-trip range, with near-zero useful load, is here termed the "no-load distance," approximately half the ferry range. One could think of the no-load distance also as the maximum distance that a single passenger could be delivered under emergency conditions, and the aircraft returned without refueling.
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From page 78... ...
Figure D.1 illustrates that if the fuel weight is reduced to the minimum needed for fixed reserves, the aircraft can carry a useful load for very short distances. Figure D.1 also indicates that there may be an additional variable fuel reserve proportional to the "mileage fuel." The fuel carried on a mission is typically the mileage fuel plus variable and a minimum fixed reserve.
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From page 79... ...
day hours / sortie Available flight time is determined by outside factors such as spare parts, maintenance technician availability, and air crew manning levels, as well as daylight and dark as missions dictate. Flight time per sortie is determined by dividing total round-trip distance flown by cruise speed.
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From page 80... ...
At less than one-eighth of the no-load radius, turnaround and queue times can preclude maintaining fixed flight time. The curve may also be less useful at distances greater than three-fourths of the no-load distance because auxiliary fuel cells may use up cargo space.
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From page 81... ...
A plot of this term is shown in the upper left-hand corner of Figure D.3. APPLICATIONS Payload Versus Mission Distance There are five major aircraft configurations to be considered: • V-22 short takeoff, internal load (V-22 STO)
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From page 82... ...
mission distance (radius) , internal and external carry.
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From page 83... ...
An approximate value of an "external no-load distance" can be obtained by assuming that the hourly fuel consumption rates, and so the times of flight for internal and external loads, are about the same.2 Then the "external no- load distance" = (external no- load time of flight ≈ internal no- load time of flight) × (effective external cruise speed)
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From page 84... ...
the distance term is plotted in the upper left corner of Figure D.3, (2) the aircraft design term maximum load / sortie × effective cruise speed 2 × no- load distance / sortie calculated in Table D.1 is plot ted in the upper right corner of Figure D.3, and (3)
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From page 85... ...
TABLE D.2 % Availability × % Efficiency Flight Time/ × Flight Time/Aircraft/Day % Availability % Efficiency Aircraft/Day (approximate values) 1.0 1.0 12 12 .9 .9 10 8 .7 .7 8 4 .6 .6 6 2 .5 .5 4 1 An important problem that often must be solved is this: Can the number of aircraft available position and support the size force necessary at a stated distance from base to objective?
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From page 86... ...
The vertical takeoff and landing characteristics permit basing, or at least refueling, at a wide variety of ships and small, hideable facilities ashore. It is true for these operations, as it has always been, that a plan that is logistically infeasible is, in fact, not feasible, but the ways in which logistics support can be accomplished through temporary combat service support detachments, or forward arming and refueling points, or fuel caches ashore or at sea, or aerial refueling, have increased manyfold.
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From page 87... ...
APPENDIX D 87 Objective 2 Land Coastline Objective 2 Too Far Sea CSSD Inland Land CSSD on Coastline Coast New Ship Position Sea FIGURE D.5 Location of a temporary combat service support detachment (CSSD) at land, at the coastline, or at sea.
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